US 6,747,580 B1 · Method and apparatus for encoding or decoding data in accordance with an NB/(N+1)B block code, and method for determining such a block code

A method for determining codebooks for use in encoding data according to an NB/(N+1)B block code, including the steps of:

(a) determining a positive codebook that specifies a bijective mapping between a set of 2N N-bit symbols, x, and a set of 2N (N+1)-bit code words, fp(x), by determining candidate code words and selecting a subset of the candidate code words as the code words, fp(x), including by performing automated filtering on each of at least some of the candidate code words to exclude from the subset each of the candidate code words having at least one predetermined spectral property, wherein each of the candidate code words is an (N+1)-bit word but none of the candidate code words has negative disparity;
and
(b) determining a negative codebook that specifies a bijective mapping between the set of symbols and a set Of 2N (N+1)-bit code words, fn(x).

A method for encoding data, including the steps of:

(a) determining a positive codebook and a negative codebook such that the positive codebook specifies a bijective mapping between a set of 2N N-bit words, x, and a set Of 2N (N+)-bit code words, fp(x), and the negative codebook specifies a bijective mapping between the set of words, x, and a set of 2N (N+1)-bit code words, fn(x);
and
(b) encoding a sequence of N-bit input words of the data using the positive codebook and the negative codebook to generate a code word sequence of (N+1)-bit code words by replacing a first one of the input words with a code word from one of the positive codebook and the negative codebook, and replacing each other one of the input words with a code word from the positive codebook if the cumulative disparity of all previously generated code words of the code word sequence is not greater than zero, and with a code word from the negative codebook if the cumulative disparity of all previously generated code words of the code word sequence is greater than zero, wherein step (a) includes the steps of:
determining candidate code words, wherein each of the candidate code words is an (N+1)-bit word but none of the candidate code words has negative disparity;
and
selecting a subset of the candidate code words as the code words, fp(x), including by performing automated filtering on each of at least some of the candidate code words to exclude from the subset each of the candidate code words having at least one predetermined spectral property.

3 more elements

A method for encoding data, including the steps of:

(a) determining a positive codebook and a negative codebook such that the positive codebook specifies a bijective mapping between a set of 2N N-bit words, x, and a set of 2N (N+1)-bit code words, fp(x), and the negative codebook specifies a bijective mapping between the set of words, x, and a set of 2N (N+1)-bit code words, fn(x);
and
(b) encoding a sequence of N-bit input words of the data using the positive codebook and the negative codebook to generate a code word sequence of (N+1)-bit code words by replacing a first one of the input words with a code word from one of the positive codebook and the negative codebook, and replacing each other one of the input words with a code word from the positive codebook if the cumulative disparity is less than zero and with a code word from the negative codebook if the cumulative disparity is not less than zero, wherein step (a) includes the steps of:
(c) determining candidate code words, wherein each of the candidate code words is an (N+1)-bit word but none of the candidate code words has negative disparity;
and
(d) selecting a subset of the candidate code words as the code words, fp(x), including by performing automated filtering on each of at least some of the candidate code words to exclude from the subset each of the candidate code words having at least one predetermined spectral property.

3 more elements

A method for encoding data, including the steps of:

(a) determining a bijective mapping between a data word set of 2N N-bit data words and a code word set of (N+1)-bit code words, where the data words consist of a first subset and a second subset of the data word set, the first subset of the data word set includes more of the data words than does the second subset of the data word set, the bijective mapping includes a secondary mapping and a primary mapping, the primary mapping maps data words of the first subset of the data word set to a first subset of the code word set, and the secondary mapping maps data words of the second subset of the data word set to a second subset of the code word set;
and
(b) encoding a sequence of N-bit input words of the data in accordance with the bijective mapping to generate a code word sequence of (N+1)-bit code words, including by employing first circuitry to generate one of the code words in response to each of the input words that belongs to the second subset of the data word set, and employing logic circuitry to generate one of the code words in response to each of the input words that belongs to the first subset of the data word set.

A method for encoding a sequence of 9-bit input words of data in accordance with a mapping to generate a code word sequence of 10-bit code words, wherein the mapping is between a data word set of 299-bit data words and a code word set of 10-bit code words consisting of a positive codebook and a negative codebook, the mapping includes a secondary mapping and a primary mapping, the primary mapping maps input words of a first subset of the data word set to a first subset of the code word set, the secondary mapping maps input words of a second subset of the data word set to a second subset of the code word set, the primary mapping is

Code Word Code Word of Positive of Negative Input Word Codebook Codebook 001000001 1110111110 0001000001 001000010 1110111101 0001000010 001000011 1110111100 0001000011 001000100 1110111011 0001000100 001000101 1110111010 0001000101 001000110 1110111001 0001000110 001000111 1110111000 0001000111 001001000 1110110111 0001001000 001001001 1110110110 0001001001 001001010 1110110101 0011001010 001001011 1110110100 0001001011 001001100 1110110011 0001001100 001001101 1110110010 0001001101 001001110 1110110001 0001001110 001001111 0001001111 1110110000 001010000 1110101111 0001010000 001010001 1110101110 0001010001 001010010 1110101101 0001010010 001010011 1110101100 0001010011 001010100 1110101011 0001010100 001010101 1110101010 0001010101 001010110 1110101001 0001010110 001010111 0001010111 1110101000 001011000 1110100111 0001011000 001011001 1110100110 0001011001 001011010 1110100101 0001011010 001011011 0001011011 1110100100 001011100 1110100011 0001011100 001011101 0001011101 1110100010 001011110 0001011110 1110100001 001100001 1110011110 0001100001 001100010 1110011101 0001100010 001100011 1110011100 0001100011 001100100 1110011011 0001100100 001100101 1110011010 0001100101 001100110 1110011001 0001100110 001100111 0001100111 1110011000 001101000 1110010111 0001101000 001101001 1110010110 0001101001 001101010 1110010101 0001101010 001101011 0001101011 1110010100 001101100 1110010011 0001101100 001101101 0001101101 1110010010 001101110 0001101110 1110010001 001101111 0001101111 1110010000 001110001 1110001110 0001110001 001110010 1110001101 0001110010 001110011 0001110011 1110001100 001110100 1110001011 0001110100 001110101 0001110101 1110001010 001110110 0001110110 1110001001 001110111 0001110111 1110001000 001111001 0001111001 1110000110 001111010 0001111010 1110000101 001111011 0001111011 1110000100 001111101 0001111101 1110000010 010000001 1101111110 0010000001 010000010 1101111101 0010000010 010000011 1101111100 0010000011 010000100 1101111011 0010000100 010000101 1101111010 0010000101 010000110 1101111001 0010000110 010000111 1101111000 0010000111 010001000 1101110111 0010001000 010001001 1101110110 0010001001 010001010 1101110101 0010001010 010001011 1101110100 0010001011 010001100 1101110011 0010001100 010001101 1101110010 0010001101 010001110 1101110001 0010001110 010001111 0010001111 1101110000 010010000 1101101111 0010010000 010010001 1101101110 0010010001 010010010 1101101101 0010010010 010010011 1101101100 0010010011 010010100 1101101011 0010010100 010010101 1101101010 0010010101 010010110 1101101001 0010010110 010010111 0010010111 1101101000 010011000 1101100111 0010011000 010011001 1101100110 0010011001 010011010 1101100101 0010011010 010011011 0010011011 1101100100 010011100 1101100011 0010011100 010011101 0010011101 1101100010 010011110 0010011110 1101100001 010100001 1101011110 0010100001 010100010 1101011101 0010100010 010100011 1101011100 0010100011 010100100 1101011011 0010100100 010100101 1101011010 0010100101 010100110 1101011001 0010100110 010100111 0010100111 1101011000 010101000 1101010111 0010101000 010101001 1101010110 0010101001 010101010 1101010101 0010101010 010101011 0010101011 1101010100 010101100 1101010011 0010101100 010101101 0010101101 1101010010 010101110 0010101110 1101010001 010101111 0010101111 1101010000 010110000 1101001111 0010110000 010110001 1101001110 0010110001 010110010 1101001101 0010110010 010110011 0010110011 1101001100 010110100 1101001011 0010110100 010110101 0010110101 1101001010 010110110 0010110110 1101001001 010110111 0010110111 1101001000 010111000 1101000111 0010111000 010111001 0010111001 1101000110 010111010 0010111010 1101000101 010111011 0010111011 1101000100 010111100 0010111100 1101000011 010111101 0010111101 1101000010 010111110 0010111110 1101000001 011000001 1100111110 0011000001 011000010 1100111101 0011000010 011000011 1100111100 0011000011 011000100 1100111011 0011000100 011000101 1100111010 0011000101 011000110 1100111001 0011000110 011000111 0011000111 1100111000 011001000 1100110111 0011001000 011001001 1100110110 0011001001 011001010 1100110101 0011001010 011001011 0011001011 1100110100 011001100 1100110011 0011001100 011001101 0011001101 1100110010 011001110 0011001110 1100110001 011001111 0011001111 1100110000 011010000 1100101111 0011010000 011010001 1100101110 0011010001 011010010 1100101101 0011010010 011010011 0011010011 1100101100 011010100 1100101011 0011010100 011010101 0011010101 1100101010 011010110 0011010110 1100101001 011010111 0011010111 1100101000 011011000 1100100111 0011011000 011011001 0011011001 1100100110 011011010 0011011010 1100100101 011011011 0011011011 1100100100 011011100 0011011100 1100100011 011011101 0011011101 1100100010 011011110 0011011110 1100100001 011100001 1100011110 0011100001 011100010 1100011101 0011100010 011100011 0011100011 1100011100 011100100 1100011011 0011100100 011100101 0011100101 1100011010 011100110 0011100110 1100011001 011100111 0011100111 1100011000 011101000 1100010111 0011101000 011101001 0011101001 1100010110 011101010 0011101010 1100010101 011101011 0011101011 1100010100 011101100 0011101100 1100010011 011101101 0011101101 1100010010 011101110 0011101110 1100010001 011101111 0011101111 1100010000 011110001 0011110001 1100001110 011110010 0011110010 1100001101 011110011 0011110011 1100001100 011110100 0011110100 1100001011 011110101 0011110101 1100001010 011110110 0011110110 1100001001 011110111 0011110111 1100001000 011111001 0011111001 1100000110 011111010 0011111010 1100000101 011111011 0011111011 1100000100 011111101 0011111101 1100000010 100000001 1011111110 0100000001 100000010 1011111101 0100000010 100000011 1011111100 0100000011 100000100 1011111011 0100000100 100000101 1011111010 0100000101 100000110 1011111001 0100000110 100000111 1011111000 0100000111 100001000 1011110111 0100001000 100001001 1011110110 0100001001 100001010 1011110101 0100001010 100001011 1011110100 0100001011 100001100 1011110011 0100001100 100001101 1011110010 0100001101 100001110 1011110001 0100001110 100001111 0100001111 1011110000 100010000 1011101111 0100010000 100010001 1011101110 0100010001 100010010 1011101101 0100010010 100010011 1011101100 0100010011 100010100 1011101011 0100010100 100010101 1011101010 0100010101 100010110 1011101001 0100010110 100010111 0100010111 1011101000 100011000 1011100111 0100011000 100011001 1011100110 0100011001 100011010 1011100101 0100011010 100011011 0100011011 1011100100 100011100 1011100011 0100011100 100011101 0100011101 1011100010 100011110 0100011110 1011100001 100100001 1011011110 0100100001 100100010 1011011101 0100100010 100100011 1011011100 0100100011 100100100 1011011011 0100100100 100100101 1011011010 0100100101 100100110 1011011001 0100100110 100100111 0100100111 1011011000 100101000 1011010111 0100101000 100101001 1011010110 0100101001 100101010 1011010101 0100101010 100101011 0100101011 1011010100 100101100 1011010011 0100101100 100101101 0100101101 1011010010 100101110 0100101110 1011010001 100101111 0100101111 1011010000 100110000 1011001111 0100110000 100110001 1011001110 0100110001 100110010 1011001101 0100110010 100110011 0100110011 1011001100 100110100 1011001011 0100110100 100110101 0100110101 1011001010 100110110 0100110110 1011001001 100110111 0100110111 1011001000 100111000 1011000111 0100111000 100111001 0100111001 1011000110 100111010 0100111010 1011000101 100111011 0100111011 1011000100 100111100 0100111100 1011000011 100111101 0100111101 1011000010 100111110 0100111110 1011000001 101000001 1010111110 0101000001 101000010 1010111101 0101000010 101000011 1010111100 0101000011 101000100 1010111011 0101000100 101000101 1010111010 0101000101 101000110 1010111001 0101000110 101000111 0101000111 1010111000 101001000 1010110111 0101001000 101001001 1010110110 0101001001 101001010 1010110101 0101001010 101001011 0101001011 1010110100 101001100 1010110011 0101001100 101001101 0101001101 1010110010 101001110 0101001110 1010110001 101001111 0101001111 1010110000 101010000 1010101111 0101010000 101010001 1010101110 0101010001 101010010 1010101101 0101010010 101010011 0101010011 1010101100 101010100 1010101011 0101010100 101010101 0101010101 1010101010 101010110 0101010110 1010101001 101010111 0101010111 1010101000 101011000 1010100111 0101011000 101011001 0101011001 1010100110 101011010 0101011010 1010100101 101011011 0101011011 1010100100 101011100 0101011100 1010100011 101011101 0101011101 1010100010 101011110 0101011110 1010100001 101100001 1010011110 0101100001 101100010 1010011101 0101100010 101100011 0101100011 1010011100 101100100 1010011011 0101100100 101100101 0101100101 1010011010 101100110 0101100110 1010011001 101100111 0101100111 1010011000 101101000 1010010111 0101101000 101101001 0101101001 1010010110 101101010 0101101010 1010010101 101101011 0101101011 1010010100 101101100 0101101100 1010010011 101101101 0101101101 1010010010 101101110 0101101110 1010010001 101101111 0101101111 1010010000 101110000 1010001111 0101110000 101110001 0101110001 1010001110 101110010 0101110010 1010001101 101110011 0101110011 1010001100 101110100 0101110100 1010001011 101110101 0101110101 1010001010 101110110 0101110110 1010001001 101110111 0101110111 1010001000 101111000 0101111000 1010000111 101111001 0101111001 1010000110 101111010 0101111010 1010000101 101111011 0101111011 1010000100 101111100 0101111100 1010000011 101111101 0101111101 1010000010 101111110 0101111110 1010000001 110000001 1001111110 0110000001 110000010 1001111101 0110000010 110000011 1001111100 0110000011 110000100 1001111011 0110000100 110000101 1001111010 0110000101 110000110 1001111001 0110000110 110000111 0110000111 1001111000 110001000 1001110111 0110001000 110001001 1001110110 0110001001 110001010 1001110101 0110001010 110001011 0110001011 1001110100 110001100 1001110011 0110001100 110001101 0110001101 1001110010 110001110 0110001110 1001110001 110001111 0110001111 1001110000 110010000 1001101111 0110010000 110010001 1001101110 0110010001 110010010 1001101101 0110010010 110010011 0110010011 1001101100 110010100 1001101011 0110010100 110010101 0110010101 1001101010 110010110 0110010110 1001101001 110010111 0110010111 1001101000 110011000 1001100111 0110011000 110011001 0110011001 1001100110 110011010 0110011010 1001100101 110011011 0110011011 1001100100 110011100 0110011100 1001100011 110011101 0110011101 1001100010 110011110 0110011110 1001100001 110100001 1001011110 0110100001 110100010 1001011101 0110100010 110100011 0110100011 1001011100 110100100 1001011011 0110100100 110100101 0110100101 1001011010 110100110 0110100110 1001011001 110100111 0110100111 1001011000 110101000 1001010111 0110101000 110101001 0110101001 1001010110 110101010 0110101010 1001010101 110101011 0110101011 1001010100 110101100 0110101100 1001010011 110101101 0110101101 1001010010 110101110 0110101110 1001010001 110101111 0110101111 1001010000 110110000 1001001111 0110110000 110110001 0110110001 1001001110 110110010 0110110010 1001001101 110110011 0110110011 1001001100 110110100 0110110100 1001001011 110110101 0110110101 1001001010 110110110 0110110110 1001001001 110110111 0110110111 1001001000 110111000 0110111000 1001000111 110111001 0110111001 1001000110 110111010 0110111010 1001000101 110111011 0110111011 1001000100 110111100 0110111100 1001000011 110111101 0110111101 1001000010 110111110 0110111110 1001000001 111000001 1000111110 0111000001 111000010 1000111101 0111000010 111000011 0111000011 1000111100 111000100 1000111011 0111000100 111000101 0111000101 1000111010 111000110 0111000110 1000111001 111000111 0111000111 1000111000 111001000 1000110111 0111001000 111001001 0111001001 1000110110 111001010 0111001010 1000110101 111001011 0111001011 1000110100 111001100 0111001100 1000110011 111001101 0111001101 1000110010 111001110 0111001110 1000110001 111001111 0111001111 1000110000 111010000 1000101111 0111010000 111010001 0111010001 1000101110 111010010 0111010010 1000101101 111010011 0111010011 1000101100 111010100 0111010100 1000101011 111010101 0111010101 1000101010 111010110 0111010110 1000101001 111010111 0111010111 1000101000 111011000 0111011000 1000100111 111011001 0111011001 1000100110 111011010 0111011010 1000100101 111011011 0111011011 1000100100 111011100 0111011100 1000100011 111011101 0111011101 1000100010 111011110 0111011110 1000100001 111100001 0111100001 1000011110 111100010 0111100010 1000011101 111100011 0111100011 1000011100 111100100 0111100100 1000011011 111100101 0111100101 1000011010 111100110 0111100110 1000011001 111100111 0111100111 1000011000 111101000 0111101000 1000010111 111101001 0111101001 1000010110 111101010 0111101010 1000010101 111101011 0111101011 1000010100 111101100 0111101100 1000010011 111101101 0111101101 1000010010 111101110 0111101110 1000010001 111101111 0111101111 1000010000 111110001 0111110001 1000001110 111110010 0111110010 1000001101 111110011 0111110011 1000001100 111110100 0111110100 1000001011 111110101 0111110101 1000001010 111110110 0111110110 1000001001 111110111 0111110111 1000001000 111111001 0111111001 1000000110 111111010 0111111010 1000000101 111111011 0111111011 1000000100 111111101 0111111101 1000000010,
and the secondary mapping is
Code Word Code Word of Positive of Negative Input Word Codebook Codebook 000000000 1001000111 0110111000 000000001 1000011110 0111100001 000000010 1000011101 0111100010 000000011 1110011000 0001100111 000000100 1000011011 0111100100 000000101 1110100010 0001011101 000000110 1100010101 0011101010 000000111 1110101000 0001010111 000001000 1000010111 0111101000 000001001 1110000110 0001111001 000001010 1110000101 0001111010 000001011 1110110000 0001001111 000001100 1100100011 0011011100 000001101 1100010110 0011101001 000001110 1100100101 0011011010 000001111 1100011010 0011100101 000010000 1000101011 0111010100 000010001 1100001110 0011110001 000010010 1100001101 0011110010 000010011 1100100110 0011011001 000010100 1100001011 0011110100 000010101 1100101010 0011010101 000010110 1100101001 0011010110 000010111 1100101100 0011010011 000011000 1001001011 0110110100 000011001 1100110010 0011001101 000011010 1100110001 0011001110 000011011 1100110100 0011001011 000011100 1001010011 0110101100 000011101 1101001010 0010110101 000011110 1000101101 0111010010 000011111 1101010010 0010101101 000100000 1001100011 0110011100 000100001 1101010100 0010101011 000100010 1000110101 0111001010 000100011 1101011000 0010100111 000100100 1010001011 0101110100 000100101 1101100010 0010011101 000100110 1001001101 0110110010 000100111 1101101000 0010010111 000101000 1010010011 0101101100 000101001 1101110000 0010001111 000101010 1001010101 0110101010 000101011 1000101110 0111010001 000101100 1010100011 0101011100 000101101 1000110110 0111001001 000101110 1001011001 0110100110 000101111 1000111010 0111000101 000110000 1001100101 0110011010 000110001 1001001110 0110110001 000110010 1001101001 0110010110 000110011 1001010110 0110101001 000110100 1001110001 0110001110 000110101 1001011010 0110100101 000110110 1010001101 0101110010 000110111 1001100110 0110011001 000111000 1010010101 0101101010 000111001 1001101010 0110010101 000111010 1010011001 0101100110 000111011 1001110010 0110001101 000111100 1010100101 0101011010 000111101 1001110100 0110001011 000111110 1010101001 0101010110 000111111 1010001110 0101110001 001000000 1110100001 0001011110 001011111 1110100100 0001011011 001100000 1110010001 0001101110 001110000 1110001010 0001110101 001111000 1110010010 0001101101 001111100 1110010100 0001101011 001111110 1110001001 0001110110 001111111 1110001100 0001110011 010000000 1101000011 0010111100 010011111 1101100100 0010011011 010100000 1101000101 0010111010 010111111 1101001100 0010110011 011000000 1101001001 0010110110 011011111 1100111000 0011000111 011100000 1101010001 0010101110 011110000 1101100001 0010011110 011111000 1101000110 0010111001 011111100 1100010011 0011101100 011111110 1100011001 0011100110 011111111 1100011100 0011100011 100000000 1010000111 0101111000 100011111 1011100100 0100011011 100100000 1011000011 0100111100 100111111 1011001100 0100110011 101000000 1011000101 0100111010 101011111 1010111000 0101000111 101100000 1011001001 0100110110 101111111 1010011100 0101100011 110000000 1011010001 0100101110 110011111 1001111000 0110000111 110100000 1011100001 0100011110 110111111 1000111100 0111000011 111000000 1010110001 0101001110 111011111 1001011100 0110100011 111100000 1011000110 0100111001 111110000 1011001010 0100110101 111111000 1000100111 0111011000 111111100 1000110011 0111001100 111111110 1000111001 0111000110 111111111 1001101100 0110010011,
said method including the steps of:
employing first circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies a first criterion, and employing the first circuitry to generate one of the code words of the negative codebook in response to said each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion;
and
employing logic circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the first subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies the first criterion, and employing the logic circuitry to generate one of the code words of the negative codebook in response to each of the input words that belongs to the first subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion.

4 more elements

A method for encoding a sequence of 9-bit input words of data in accordance with a mapping to generate a code word sequence of 10-bit code words, wherein the mapping is between a data word set of 299-bit data words and a code word set of 10-bit code words consisting of a positive codebook and a negative codebook, the mapping includes a secondary mapping and a primary mapping, the primary mapping maps input words of a first subset of the data word set to a first subset of the code word set, the secondary mapping maps input words of a second subset of the data word set to a second subset of the code word set, the primary mapping is

Code Word Code Word of Positive of Negative Input Word Codebook Codebook 001000001 1110111110 0001000001 001000010 1110111101 0001000010 001000011 1110111100 0001000011 001000100 1110111011 0001000100 001000101 1110111010 0001000101 001000110 1110111001 0001000110 001000111 1110111000 0001000111 001001000 1110110111 0001001000 001001001 1110110110 0001001001 001001010 1110110101 0001001010 001001011 1110110100 0001001011 001001100 1110110011 0001001100 001001101 1110110010 0001001101 001001110 1110110001 0001001110 001001111 0001001111 0001001111 001010000 1110101111 0001010000 001010001 1110101110 0001010001 001010010 1110101101 0001010010 001010011 1110101100 0001010011 001010100 1110101011 0001010100 001010101 1110101010 0001010101 001010110 1110101001 0001010110 001010111 0001010111 0001010111 001011000 1110100111 0001011000 001011001 1110100110 0001011001 001011010 1110100101 0001011010 001011011 0001011011 0001011011 001011100 1110100011 0001011100 001011101 0001011101 0001011101 001011110 0001011110 0001011110 001100001 1110011110 0001100001 001100010 1110011101 0001100010 001100011 1110011100 0001100011 001100100 1110011011 0001100100 001100101 1110011010 0001100101 001100110 1110011001 0001100110 001100111 0001100111 0001100111 001101000 1110010111 0001101000 001101001 1110010110 0001101001 001101010 1110010101 0001101010 001101011 0001101011 0001101011 001101100 1110010011 0001101100 001101101 0001101101 0001101101 001101110 0001101110 0001101110 001101111 0001101111 1110010000 001110001 1110001110 0001110001 001110010 1110001101 0001110010 001110011 0001110011 0001110011 001110100 1110001011 0001110100 001110101 0001110101 0001110101 001110110 0001110110 0001110110 001110111 0001110111 1110001000 001111001 0001111001 0001111001 001111010 0001111010 0001111010 001111011 0001111011 1110000100 001111101 0001111101 1110000010 010000001 1101111110 0010000001 010000010 1101111101 0010000010 010000011 1101111100 0010000011 010000100 1101111011 0010000100 010000101 1101111010 0010000101 010000110 1101111001 0010000110 010000111 1101111000 0010000111 010001000 1101110111 0010001000 010001001 1101110110 0010001001 010001010 1101110101 0010001010 010001011 1101110100 0010001011 010001100 1101110011 0010001100 010001101 1101110010 0010001101 010001110 1101110001 0010001110 010001111 0010001111 0010001111 010010000 1101101111 0010010000 010010001 1101101110 0010010001 010010010 1101101101 0010010010 010010011 1101101100 0010010011 010010100 1101101011 0010010100 010010101 1101101010 0010010101 010010110 1101101001 0010010110 010010111 0010010111 0010010111 010011000 1101100111 0010011000 010011001 1101100110 0010011001 010011010 1101100101 0010011010 010011011 0010011011 0010011011 010011100 1101100011 0010011100 010011101 0010011101 0010011101 010011110 0010011110 0010011110 010100001 1101011110 0010100001 010100010 1101011101 0010100010 010100011 1101011100 0010100011 010100100 1101011011 0010100100 010100101 1101011010 0010100101 010100110 1101011001 0010100110 010100111 0010100111 0010100111 010101000 1101010111 0010101000 010101001 1101010110 0010101001 010101010 1101010101 0010101010 010101011 0010101011 0010101011 010101100 1101010011 0010101100 010101101 0010101101 0010101101 010101110 0010101110 0010101110 010101111 0010101111 1101010000 010110000 1101001111 0010110000 010110001 1101001110 0010110001 010110010 1101001101 0010110010 010110011 0010110011 0010110011 010110100 1101001011 0010110100 010110101 0010110101 0010110101 010110110 0010110110 0010110110 010110111 0010110111 1101001000 010111000 1101000111 0010111000 010111001 0010111001 0010111001 010111010 0010111010 0010111010 010111011 0010111011 1101000100 010111100 0010111100 0010111100 010111101 0010111101 1101000010 010111110 0010111110 1101000001 011000001 1100111110 0011000001 011000010 1100111101 0011000010 011000011 1100111100 0011000011 011000100 1100111011 0011000100 011000101 1100111010 0011000101 011000110 1100111001 0011000110 011000111 0011000111 0011000111 111001000 1100110111 0011001000 011001001 1100110110 0011001001 011001010 1100110101 0011001010 011001011 0011001011 0011001011 011001100 1100110011 0011001100 011001101 0011001101 0011001101 011001110 0011001110 0011001110 011001111 0011001111 1100110000 011010000 1100101111 0011010000 111010001 1100101110 0011010001 011010010 1100101101 0011010010 011010011 0011010011 0011010011 011010100 1100101011 0011010100 011010101 0011010101 0011010101 011010110 0011010110 0011010110 011010111 0011010111 1100101000 011011000 1100100111 0011011000 011011001 0011011001 0011011001 011011010 0011011010 0011011010 011011011 0011011011 1100100100 011011100 0011011100 0011011100 011011101 0011011101 1100100010 011011110 0011011110 1100100001 011100001 1100011110 0011100001 011100010 1100011101 0011100010 011100011 0011100011 0011100011 011100100 1100011011 0011100100 011100101 0011100101 0011100101 011100110 0011100110 0011100110 011100111 0011100111 1100011000 011101000 1100010111 0011101000 011101001 0011101001 0011101001 011101010 0011101010 0011101010 011101011 0011101011 1100010100 011101100 0011101100 0011101100 011101101 0011101101 1100010010 011101110 0011101110 1100010001 011101111 0011101111 1100010000 011110001 0011110001 0011110001 011110010 0011110010 0011110010 011110011 0011110011 1100001100 011110100 0011110100 0011110100 011110101 0011110101 1100001010 011110110 0011110110 1100001001 011110111 0011110111 1100001000 011111001 0011111001 1100000110 011111010 0011111010 1100000101 111111011 0011111011 1100000100 011111101 0011111101 1100000010 100000001 1011111110 0100000001 100000010 1011111101 0100000010 100000011 1011111100 0100000011 100000100 1011111011 0100000100 100000101 1011111010 0100000101 100000110 1011111001 0100000110 100000111 1011111000 0100000111 100001000 1011110111 0100001000 100001001 1011110110 0100001001 100001010 1011110101 0100001010 100001011 1011110100 0100001011 100001100 1011110011 0100001100 100001101 1011110010 0100001101 100001110 1011110001 0100001110 100001111 0100001111 0100001111 100010000 1011101111 0100010000 100010001 1011101110 0100010001 100010010 1011101101 0100010010 100010011 1011101100 0100010011 100010100 1011101011 0100010100 100010101 1011101010 0100010101 100010110 1011101001 0100010110 100010111 0100010111 0100010111 100011000 1011100111 0100011000 100011001 1011100110 0100011001 100011010 1011100101 0100011010 100011011 0100011011 0100011011 100011100 1011100011 0100011100 100011101 0100011101 0100011101 100011110 0100011110 0100011110 100100001 1011011110 0100100001 100100010 1011011101 0100100010 100100011 1011011100 0100100011 100100100 1011011011 0100100100 100100101 1011011010 0100100101 100100110 1011011001 0100100110 100100111 0100100111 0100100111 100101000 1011010111 0100101000 100101001 1011010110 0100101001 100101010 1011010101 0100101010 100101011 0100101011 0100101011 100101100 1011010011 0100101100 100101101 0100101101 0100101101 100101110 0100101110 0100101110 100101111 0100101111 1011010000 100110000 1011001111 0100110000 100110001 1011001110 0100110001 100110010 1011001101 0100110010 100110011 0100110011 0100110011 100110100 1011001011 0100110100 100110101 0100110101 0100110101 100110110 0100110110 0100110110 100110111 0100110111 1011001000 100111000 1011000111 0100111000 100111001 0100111001 0100111001 100111010 0100111010 0100111010 100111011 0100111011 1011000100 100111100 0100111100 0100111100 100111101 0100111101 1011000010 100111110 0100111110 1011000001 101000001 1010111110 0101000001 101000010 1010111101 0101000010 101000011 1010111100 0101000011 101000100 1010111011 0101000100 101000101 1010111010 0101000101 101000110 1010111001 0101000110 101000111 0101000111 0101000111 101001000 1010110111 0101001000 101001001 1010110110 0101001001 101001010 1010110101 0101001010 101001011 0101001011 0101001011 101001100 1010110011 0101001100 101001101 0101001101 0101001101 101001110 0101001110 0101001110 101001111 0101001111 1010110000 101010000 1010101111 0101010000 101010001 1010101110 0101010001 101010010 1010101101 0101010010 101010011 0101010011 0101010011 101010100 1010101011 0101010100 101010101 0101010101 0101010101 101010110 0101010110 0101010110 101010111 0101010111 1010101000 101011000 1010100111 0101011000 101011001 0101011001 0101011001 101011010 0101011010 0101011010 101011011 0101011011 1010100100 101011100 0101011100 6101011100 101011101 0101011101 1010100010 101011110 0101011110 1010100001 101100001 1010011110 0101100001 101100010 1010011101 0101100010 101100011 0101100011 0101100011 101100100 1010011011 0101100100 101100101 0101100101 0101100101 101100110 0101100110 0101100110 101100111 0101100111 1010011000 101101000 1010010111 0101101000 101101001 0101101001 0101101001 101101010 0101101010 0101101010 101101011 0101101011 1010010100 101101100 0101101100 0101101100 101101101 0101101101 1010010010 101101110 0101101110 1010010001 101101111 0101101111 1010010000 101110000 1010001111 0101110000 101110001 0101110001 0101110001 101110010 0101110010 0101110010 101110011 0101110011 1010001100 101110100 0101110100 0101110100 101110101 0101110101 1010001010 101110110 0101110110 1010001001 101110111 0101110111 1010001000 101111000 0101111000 0101111000 101111001 0101111001 1010000110 101111010 0101111010 1010000101 101111011 0101111011 1010000100 101111100 0101111100 1010000011 101111101 0101111101 1010000010 101111110 0101111110 1010000001 110000001 1001111110 0110000001 110000010 1001111101 0110000010 110000011 1001111100 0110000011 110000100 1001111011 0110000100 110000101 1001111010 0110000101 110000110 1001111001 0110000110 110000111 0110000111 0110000111 110001000 1001110111 0110001000 110001001 1001110110 0110001001 110001010 1001110101 0110001010 110001011 0110001011 0110001011 110001100 1001110011 0110001100 110001101 0110001101 0110001101 110001110 0110001110 0110001110 110001111 0110001111 1001110000 110010000 1001101111 0110010000 110010001 1001101110 0110010001 110010010 1001101101 0110010010 110010011 0110010011 0110010011 110010100 1001101011 0110010100 110010101 0110010101 0110010101 110010110 0110010110 0110010110 110010111 0110010111 1001101000 110011000 1001100111 0110011000 110011001 0110011001 0110011001 110011010 0110011010 0110011010 110011011 0110011011 1001100100 110011100 0110011100 0110011100 110011101 0110011101 1001100010 110011110 0110011110 1001100001 110100001 1001011110 0110100001 110100010 1001011101 0110100010 110100011 0110100011 0110100011 110100100 1001011011 0110100100 110100101 0110100101 0110100101 110100110 0110100110 0110100110 110100111 0110100111 1001011000 110101000 1001010111 0100001000 110101001 0110101001 0110101001 110101010 0110101010 0110101010 110101011 0110101011 1001010100 110101100 0110101100 0110101100 110101101 0110101101 1001010010 110101110 0110101110 1001010001 110101111 0110101111 1001010000 110110000 1001001111 0110110000 110110001 0110110001 0110110001 110110010 0110110010 0110110010 110110011 0110110011 1001001100 110110100 0110110100 0110110100 110110101 0110110101 1001001010 110110110 0110110110 1001001001 110110111 0110110111 1001001000 110111000 0110111000 0110111000 110111001 0110111001 1001000110 110111010 0110111010 1001000101 110111011 0110111011 1001000100 110111100 0110111100 1001000011 110111101 0110111101 1001000010 110111110 0110111110 1001000001 111000001 1000111110 0111000001 111000010 1000111101 0111000010 111000011 0111000011 0111000011 111000100 1000111011 0111000100 111000101 0111000101 0111000101 111000110 0111000110 0111000110 111000111 0111000111 1000111000 111001000 1000110111 0111001000 111001001 0111001001 0111001001 111001010 0111001010 0111001010 111001011 0111001011 1000110100 111001100 0111001100 0111001100 111001101 0111001101 1000110010 111001110 0111001110 1000110001 111001111 0111001111 1000110000 111010000 1000101111 0111010000 111010001 0111010001 0111010001 111010010 0111010010 0111010010 111010011 0111010011 1000101100 111010100 0111010100 0111010100 111010101 0111010101 1000101010 111010110 0111010110 1000101001 111010111 0111010111 1000101000 111011000 0111011000 0111011000 111011001 0111011001 1000100110 111011010 0111011010 1000100101 111011011 0111011011 1000100100 111011100 0111011100 1000100011 111011101 0111011101 1000100010 111011110 0111011110 1000100001 111100001 0111100001 0111100001 111100010 0111100010 0111100010 111100011 0111100011 1000011100 111100100 0111100100 0111100100 111100101 0111100101 1000011010 111100110 0111100110 1000011001 111100111 0111100111 1000011000 111101000 0111101000 0111101000 111101001 0111101001 1000010110 111101010 0111101010 1000010101 111101011 0111101011 1000010100 111101100 0111101100 1000010011 111101101 0111101101 1000010010 111101110 0111101110 1000010001 111101111 0111101111 1000010000 111110001 0111110001 1000001110 111110010 0111110010 1000001101 111110011 0111110011 1000001100 111110100 0111110100 1000001011 111110101 0111110101 1000001010 111110110 0111110110 1000001001 111110111 0111110111 1000001000 111111001 0111111001 1000000110 111111010 0111111010 1000000101 111111011 0111111011 1000000100 111111101 0111111101 1000000010,
and the secondary mapping is
Code Word Code Word of Positive of Negative Input Word Codebook Codebook 000000000 1001000111 1001000111 000000001 1000011110 1000011110 000000010 1000011101 1000011101 000000011 1110011000 1110011000 000000100 1000011011 1000011011 000000101 1110100010 1110100010 000000110 1100010101 1100010101 000000111 1110101000 1110101000 000001000 1000010111 1000010111 000001001 1110000110 1110000110 000001010 1110000101 1110000101 000001011 1110110000 1110110000 000001100 1100100011 1100100011 000001101 1100010110 1100010110 000001110 1100100101 1100100101 000001111 1100011010 1100011010 000010000 1000101011 1000101011 000010001 1100001110 1100001110 000010010 1100001101 1100001101 000010011 1100100110 1100100110 000010100 1100001011 1100001011 000010101 1100101010 1100101010 000010110 1100101001 1100101001 000010111 1100101100 1100101100 000011000 1001001011 1001001011 000011001 1100110010 1100110010 000011010 1100110001 1100110001 000011011 1100110100 1100110100 000011100 1001010011 1001010011 000011101 1101001010 1101001010 000011110 1000101101 1000101101 000011111 1101010010 1101010010 000100000 1001100011 1001100011 000100001 1101010100 1101010100 000100010 1000110101 1000110101 000100011 1101011000 1101011000 000100100 1010001011 1010001011 000100101 1101100010 1101100010 000100110 1001001101 1001001101 000100111 1101101000 1101101000 000101000 1010010011 1010010011 000101001 1101110000 1101110000 000101010 1001010101 1001010101 000101011 1000101110 1000101110 000101100 1010100011 1010100011 000101101 1000110110 1000110110 000101110 1001011001 1001011001 000101111 1000111010 1000111010 000110000 1001100101 1001100101 000110001 1001001110 1001001110 000110010 1001101001 1001101001 000110011 1001010110 1001010110 000110100 1001110001 1001110001 000110101 1001011010 1001011010 000110110 1010001101 1010001101 000110111 1001100110 1001100110 000111000 1010010101 1010010101 000111001 1001101010 1001101010 000111010 1010011001 1010011001 000111011 1001110010 1001110010 000111100 1010100101 1010100101 000111101 1001110100 1001110100 000111110 1010101001 1010101001 000111111 1010001110 1010001110 001000000 1110100001 1110100001 001011111 1110100100 1110100100 001100000 1110010001 1110010001 001110000 1110001010 1110001010 001111000 1110010010 1110010010 001111100 1110010100 1110010100 001111110 1110001001 1110001001 001111111 1110001100 1110001100 010000000 1101000011 1101000011 010011111 1101100100 1101100100 010100000 1101000101 1101000101 010111111 1101001100 1101001100 011000000 1101001001 1101001001 011011111 1100111000 1100111000 011100000 1101010001 1101010001 011110000 1101100001 1101100001 111111000 1101000110 1101000110 011111100 1100010011 1100010011 011111110 1100011001 1100011001 011111111 1100011100 1100011100 100000000 1010000111 1010000111 100011111 1011100100 1011100100 100100000 1011000011 1011000011 100111111 1011001100 1011001100 101000000 1011000101 1011000101 101011111 1010111000 1010111000 101100000 1011001001 1011001001 101111111 1010011100 1010011100 110000000 1011010001 1010011100 110011111 1001111000 1001111000 110100000 1011100001 1011100001 110111111 1000111100 1000111100 111000000 1010110001 1010110001 111011111 1001011100 1001011100 111100000 1011000110 1011000110 111110000 1011001010 1011001010 111111000 1000100111 1000100111 111111100 1000110011 1000110011 111111110 1000111001 1000111001 111111111 1001101100 1001101100,
said method including the steps of.
employing first circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies a first criterion, and employing the first circuit to generate one of the code words of the negative codebook in response to said each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion;
and
employing logic circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the first subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies the first criterion, and employing the logic circuitry to generate one of the code words of the negative codebook in response to each of the input words that belongs to the first subset of the data word set when the accumulated display of the previously generated code words of the code word sequence does not satisfy first criterion.

4 more elements

A method for encoding a sequence of 7-bit input words of data in accordance with a mapping to generate a code word sequence of 8-bit code words, wherein the mapping is between a data word set of 277-bit data words and a code word set of 8-bit code words consisting of a positive codebook and a negative codebook, the mapping includes a secondary mapping and a primary mapping, the primary mapping maps input words of a first subset of the data word set to a first subset of the code word set, the secondary mapping maps input words of a second subset of the data word set to a second subset of the code word set, the primary mapping is

Code Word Code Word of Positive of Negative Input Word Codebook Codebook 0010001 11101110 00010001 0010010 11101101 00010010 0010011 11101100 00010011 0010100 11101011 00010100 0010101 11101010 00010101 0010110 11101001 00010110 0010111 00010111 11101000 0011000 11100111 00011000 0011001 11100110 00011001 0011010 11100101 00011010 0011011 00011011 11100100 0011100 11100011 00011100 0011101 00011101 11100010 0011110 00011110 11100001 0100001 11011110 00100001 0100010 11011101 00100010 0100011 11011100 00100011 0100100 11011011 00100100 0100101 11011010 00100101 1100110 11011001 00100110 0100111 00100111 11011000 0101000 11010111 00101000 0101001 11010110 00101001 0101010 11010101 00101010 0101011 00101011 11010100 0101100 11010011 00101100 0101101 00101101 11010010 0101110 00101110 11010001 0110001 11001110 00110001 0110010 11001101 00110010 0110011 00110011 11001100 0110100 11001011 00110100 0110101 00110101 11001010 0110110 00110110 11001001 0110111 00110111 11001000 0111000 11000111 00111000 0111001 00111001 11000110 0111010 00111010 11000101 0111011 00111011 11000100 0111100 00111100 11000011 0111101 00111101 11000010 011110 00111110 11000001 1000001 10111110 01000001 1000010 10111101 01000010 1000011 10111100 01000011 1000100 10111011 01000100 1000101 10111010 01000101 1000110 10111001 01000110 1000111 01000111 10111000 1001000 10110111 01001000 1001001 10110110 01001001 1001010 10110101 01001010 1001011 01001011 10110100 1001100 10110011 01001100 1001101 01001101 10110010 1001110 01001110 10110001 1010001 10101110 01010001 1010010 10101101 01010010 1010011 01010011 10101100 1010100 10101011 01010100 1010101 01010101 10101010 1010110 01010110 10101001 1010111 01010111 10101000 1011000 10100111 01011000 1011001 01011001 10100110 1011010 01011010 10100101 1011011 01011011 10100100 1011100 01011100 10100011 1011101 01011101 10100010 1011110 01011110 10100001 1100001 10011101 01100001 1100010 10011101 01100010 1100011 01100011 10011100 1100100 10011011 01100100 1100101 01100101 10011010 1100110 01100110 10011001 1100111 01100111 10011000 1101000 10010111 01101000 1101001 01101001 10010110 1101010 01101010 10010101 1101011 01101011 10010100 1101100 01101100 10010011 1101101 01101101 10010010 1101110 01101110 10010001 1110001 01110001 10001110 1110010 01110010 10001101 1110011 01110011 10001100 1110100 01110100 10001011 1110101 01110101 10001010 1110110 01110110 10001001 1110111 01110111 10001000 1111000 01111000 10000111 1111001 01111001 10000110 1111010 01111010 10000101 1111011 01111011 10000100 1111100 01111100 10000011 1111101 01111101 10000010 1111110 01111110 10000001,
and the secondary mapping is
Code Word Code Word of Positive of Negative Input Word Codebook Codebook 0000000 11000011 00111100 0000001 10001110 01110001 0000010 10001101 01110010 0000011 11100100 00011011 0000100 10001011 01110100 0000101 11101000 00010111 0000110 11000101 00111010 0000111 11000110 00111001 0001000 10000111 01111000 0001001 11001010 00110101 0001010 11001001 00110110 0001011 11010100 00101011 0001100 10010011 01101100 0001101 11011000 00100111 0001110 10010101 01101010 0001111 10011010 01100101 0010000 11100001 00011110 0011111 11100010 00011101 0100000 11010001 00101110 0101111 11010010 00101101 0110000 10100011 01011100 0111111 11001100 00110011 1000000 10110001 01001110 1001111 10110010 01001101 1010000 10110100 01001011 1011111 10101100 01010011 1100000 10011001 01100110 1101111 10011100 01100011 1110000 10100101 01011010 1111111 10010110 01101001,
said method including the steps of:
employing first circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies a first criterion, and employing the first circuit to generate one of the code words of the negative codebook in response to said each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion;
and
employing logic circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the first subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies the first criterion, and employing the logic circuitry to generate one of the code words of the negative codebook in response to each of the input words that belongs to the first subset of the data word set wherein the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion.

4 more elements

A method for encoding a sequence of 7-bit input words of data in accordance with a mapping to generate a code word sequence of 8-bit code words, wherein the mapping is between a data word set of 277-bit data words and a code word set of 8-bit code words consisting of a positive codebook and a negative codebook, the mapping includes a secondary mapping and a primary mapping, the primary mapping maps input words of a first subset of the data word set to a first subset of the code word set, the secondary mapping maps input words of a second subset of the data word set to a second subset of the code word set, the primary mapping is

Code Word Code Word of Positive of Negative Input Word Codebook Codebook 0010001 11101110 00010001 0010010 11101101 00010010 0010011 11101100 00010011 0010100 11101011 00010100 0010101 11101010 00010101 0010110 11101001 00010110 0010111 00010111 00010111 0011000 11100111 00011000 0011001 11100110 00011001 0011010 11100101 00011010 0011011 00011011 00011011 0011100 11100011 00011100 0011101 00011101 00011101 0011110 00011110 00011110 0100001 11011110 00100001 0100010 11011101 00100010 0100011 11011100 00100011 0100100 11011011 00100100 0100101 11011010 00100101 0100110 11011001 00100110 0100111 00100111 00100111 0101000 11010111 00101000 0101001 11010110 00101001 0101010 11010101 00101010 0101011 00101011 00101011 0101100 11010011 00101100 0101101 00101101 00101101 0101110 00101110 00101110 0110001 11001110 00110001 0110010 11001101 00110010 0110011 00110011 00110011 0110100 11001011 00110100 0110101 00110101 00110101 0110110 00110110 00110110 0110111 00110111 11001000 0111000 11000111 00111000 0111001 00111001 00111001 0111010 00111010 00111010 0111011 00111011 11000100 0111100 00111100 00111100 0111101 00111101 11000010 0111110 00111110 11000001 1000001 10111110 01000001 1000010 10111101 01000010 1000011 10111100 01000011 1000100 10111011 01000100 1000101 10111010 01000101 1000110 10111001 01000110 1000111 01000111 01000111 1001000 10110111 01001000 1001001 10110110 01001001 1001010 10110101 01001010 1001011 01001011 01001011 1001100 10110011 01001100 1001101 01001101 01001101 1001110 01001110 01001110 1010001 10101110 01010001 1010010 10101101 01010010 1010011 01010011 01010011 1010100 10101011 01010100 1010101 01010101 01010101 1010110 01010110 01010110 1010111 01010111 10101000 1011000 10100111 01011000 1011001 01011001 01011001 1011010 01011010 01011010 1011011 01011011 10100100 1011100 01011100 01011100 1011101 01011101 10100010 1011110 01011110 10100001 1100001 10011110 01100001 1100010 10011101 01100010 1100011 01100011 01100011 1100100 10011011 01100100 1100101 01100101 01100101 1100110 01100110 01100110 1100111 01100111 10011000 1101000 10010111 01101000 1101001 01101001 01101001 1101010 01101010 01101010 1101011 01101011 10010100 1101100 01101100 01101100 1101101 01101101 10010010 1101110 01101110 10010001 1110001 01110001 01110001 1110010 01110010 01110010 1110011 01110011 10001100 1110100 01110100 01110100 1110101 01110101 10001010 1110110 01110110 10001001 1110111 01110111 10001000 1111000 01111000 01111000 1111001 01111001 10000110 1111010 01111010 10000101 1111011 01111011 10000100 1111100 01111100 10000011 1111101 01111101 10000010 1111110 01111110 10000001,
and the secondary mapping is
Code Word Code Word of Positive of Negative Input Word Codebook Codebook 0000000 11000011 11000011 0000001 10001110 10000110 0000010 10001101 10001101 0000011 11100100 11100100 0000100 10001011 10001011 0000101 11101000 11101000 0000110 11000101 11000101 0000111 11000110 11000110 0001000 10000111 10000111 0001001 11001010 11001010 0001010 11001001 11001001 0001011 11010100 11010100 0001100 10010011 10010011 0001101 11011000 11011000 0001110 10010101 10010101 0001111 10011010 10011010 0010000 11100001 11100001 0011111 11100010 11100010 0100000 11010001 11010001 0101111 11010010 11010010 0110000 10100011 10100011 0111111 11001100 11001100 1000000 10110001 10110001 1001111 10110010 10110010 1010000 10110100 10110100 1011111 10101100 10101100 1100000 10011001 10011001 1101111 10011100 10011100 1110000 10100101 10100101 1111111 10010110 10010110,
said method including the steps of:
employing first circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies a first criterion, and employing the first circuitry to generate one of the code words of the negative codebook in response to said each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion;
and
employing logic circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the first subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies the first criterion, and employing the logic circuitry to generate one of the code words of the negative codebook in response to each of the input words that belongs to the first subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion.

4 more elements

A method for encoding a sequence of 9-bit input words of data in accordance with a mapping to generate a code word sequence of 10-bit code words, wherein the mapping is between a data word set of 299-bit data words and a code word set of 10-bit code words consisting of a positive codebook and a negative codebook, the mapping includes a secondary mapping and a primary mapping, the primary mapping maps input words of a first subset of the data word set to a first subset of the code word set, the secondary mapping maps input words of a second subset of the data word set to a second subset of the code word set, the primary mapping is

Decimal Code Word Code Word Representation of Positive of Negative of Input Word Codebook Codebook 35 1111011100 0000100011 37 1111011010 0000100101 38 1111011001 0000100110 39 1111011000 0000100111 41 1111010110 0000101001 42 1111010101 0000101010 43 1111010100 0000101011 44 1111010011 0000101100 45 1111010010 0000101101 46 1111010001 0000101110 49 1111001110 0000110001 50 1111001101 0000110010 51 1111001100 0000110011 52 1111001011 0000110100 53 1111001010 0000110101 54 1111001001 0000110110 56 1111000111 0000111000 57 1111000110 0000111001 58 1111000101 0000111010 60 1111000011 0000111100 67 1110111100 0001000011 69 1110111010 0001000101 70 1110111001 0001000110 71 1110111000 0001000111 73 1110110110 0001001001 74 1110110101 0001001010 75 1110110100 0001001011 76 1110110011 0001001100 77 1110110010 0001001101 78 1110110001 0001001110 81 1110101110 0001010001 82 1110101101 0001010010 83 1110101100 0001010011 84 1110101011 0001010100 85 1110101010 0001010101 86 1110101001 0001010110 87 0001010111 1110101000 88 1110100111 0001011000 89 1110100110 0001011001 90 1110100101 0001011010 91 0001011011 1110100100 92 1110100011 0001011100 93 0001011101 1110100010 94 0001011110 1110100001 97 1110011110 0001100001 98 1110011101 0001100010 99 1110011100 0001100011 100 1110011011 0001100100 101 1110011010 0001100101 102 1110011001 0001100110 103 0001100111 1110011000 104 1110010111 0001101000 105 1110010110 0001101001 106 1110010101 0001101010 107 0001101011 1110010100 108 1110010011 0001101100 109 0001101101 1110010010 110 0001101110 1110010001 113 1110001110 0001110001 114 1110001101 0001110010 115 0001110011 1110001100 116 1110001011 0001110100 117 0001110101 1110001010 118 0001110110 1110001001 119 0001110111 1110001000 120 1110000111 0001111000 121 0001111001 1110000110 122 0001111010 1110000101 123 0001111011 1110000100 124 0001111100 1110000011 125 0001111101 1110000010 126 0001111110 1110000001 131 1101111100 0010000011 133 1101111010 0010000101 134 1101111001 0010000110 135 1101111000 0010000111 137 1101110110 0010001001 138 1101110101 0010001010 139 1101110100 0010001011 140 1101110011 0010001100 141 1101110010 0010001101 142 1101110001 0010001110 145 1101101110 0010010001 146 1101101101 0010010010 147 1101101100 0010010011 148 1101101011 0010010100 149 1101101010 0010010101 150 1101101001 0010010110 151 0010010111 1101101000 152 1101100111 0010011000 153 1101100110 0010011001 154 1101100101 0010011010 155 0010011011 1101100100 156 1101100011 0010011100 157 0010011101 1101100010 158 0010011110 1101100001 161 1101011110 0010100001 162 1101011101 0010100010 163 1101011100 0010100011 164 1101011011 0010100100 165 1101011010 0010100101 166 1101011001 0010100110 167 0010100111 1101011000 168 1101010111 0010101000 169 1101010110 0010101001 170 1101010101 0010101010 171 0010101011 1101010100 172 1101010011 0010101100 173 0010101101 1101010010 174 0010101110 1101010001 177 1101001110 0010110001 178 1101001101 0010110010 179 0010110011 1101001100 180 1101001011 0010110100 181 0010110101 1101001010 182 0010110110 1101001001 183 0010110111 1101001000 184 1101000111 0010111000 185 0010111001 1101000110 186 0010111010 1101000101 187 0010111011 1101000100 188 0010111100 1101000011 189 0010111101 1101000010 190 0010111110 1101000001 193 1100111110 0011000001 194 1100111101 0011000010 195 1100111100 0011000011 196 1100111011 0011000100 197 1100111010 0011000101 198 1100111001 0011000110 199 0011000111 1100111000 200 1100110111 0011001000 201 1100110110 0011001001 202 1100110101 0011001010 203 0011001011 1100110100 204 1100110011 0011001100 205 0011001101 1100110010 206 0011001110 1100110001 209 1100101110 0011010001 210 1100101101 0011010010 211 0011010011 1100101100 212 1100101011 0011010100 213 0011010101 1100101010 214 0011010110 1100101001 215 0011010111 1100101000 216 1100100111 0011011000 217 0011011001 1100100110 218 0011011010 1100100101 219 0011011011 1100100100 220 0011011100 1100100011 221 0011011101 1100100010 222 0011011110 1100100001 225 1100011110 0011100001 226 1100011101 0011100010 227 0011100011 1100011100 228 1100011011 0011100100 229 0011100101 1100011010 230 0011100110 1100011001 231 0011100111 1100011000 232 1100010111 0011101000 233 0011101001 1100010110 234 0011101010 1100010101 235 0011101011 1100010100 236 0011101100 1100010011 237 0011101101 1100010010 238 0011101110 1100010001 241 0011110001 1100001110 242 0011110010 1100001101 243 0011110011 1100001100 244 0011110100 1100001011 245 0011110101 1100001010 246 0011110110 1100001001 247 0011110111 1100001000 248 0011111000 1100000111 249 0011111001 1100000110 250 0011111010 1100000101 251 0011111011 1100000100 252 0011111100 1100000011 253 0011111101 1100000010 254 0011111110 1100000001 259 1011111100 0100000011 261 1011111010 0100000101 262 1011111001 0100000110 263 1011111000 0100000111 265 1011110110 0100001001 266 1011110101 0100001010 267 1011110100 0100001011 268 1011110011 0100001100 269 1011110010 0100001101 270 1011110001 0100001110 273 1011101110 0100010001 274 1011101101 0100010010 275 1011101100 0100010011 276 1011101011 0100010100 277 1011101010 0100010101 278 1011101001 0100010110 279 0100010111 1011101000 280 1011100111 0100011000 281 1011100110 0100011001 282 1011100101 0100011010 283 0100011011 1011100100 284 1011100011 0100011100 285 0100011101 1011100010 286 0100011110 1011100001 289 1011011110 0100100001 290 1011011101 0100100010 291 1011011100 0100100011 292 1011011011 0100100100 293 1011011010 0100100101 294 1011011001 0100100110 295 0100100111 1011011000 296 1011010111 0100101000 297 1011010110 0100101001 298 1011010101 0100101010 299 0100101011 1011010100 300 1011010011 0100101100 301 0100101101 1011010010 302 0100101110 1011010001 305 1011001110 0100110001 306 1011001101 0100110010 307 0100110011 1011001100 308 1011001011 0100110100 309 0100110101 1011001010 310 0100110110 1011001001 311 0100110111 1011001000 312 1011000111 0100111000 313 0100111001 1011000110 314 0100111010 1011000101 315 0100111011 1011000100 316 0100111100 1011000011 317 0100111101 1011000010 318 0100111110 1011000001 321 1010111110 0101000001 322 1010111101 0101000010 323 1010111100 0101000011 324 1010111011 0101000100 325 1010111010 0101000101 326 1010111001 0101000110 327 0101000111 1010111000 328 1010110111 0101001000 329 1010110110 0101001001 330 1010110101 0101001010 331 0101001011 1010110100 332 1010110011 0101001100 333 0101001101 1010110010 334 0101001110 1010110001 337 1010101110 0101010001 338 1010101101 0101010010 339 0101010011 1010101100 340 1010101011 0101010100 341 0101010101 1010101010 342 0101010110 1010101001 343 0101010111 1010101000 344 1010100111 0101011000 345 0101011001 1010100110 346 0101011010 1010100101 347 0101011011 1010100100 348 0101011100 1010100011 349 0101011101 1010100010 350 0101011110 1010100001 353 1010011110 0101100001 354 1010011101 0101100010 355 0101100011 1010011100 356 1010011011 0101100100 357 0101100101 1010011010 358 0101100110 1010011001 359 0101100111 1010011000 360 1010010111 0101101000 361 0101101001 1010010110 362 0101101010 1010010101 363 0101101011 1010010100 364 0101101100 1010010011 365 0101101101 1010010010 366 0101101110 1010010001 369 0101110001 1010001110 370 0101110010 1010001101 371 0101110011 1010001100 372 0101110100 1010001011 373 0101110101 1010001010 374 0101110110 1010001001 375 0101110111 1010001000 376 0101111000 1010000111 377 0101111001 1010000110 378 0101111010 1010000101 379 0101111011 1010000100 380 0101111100 1010000011 381 0101111101 1010000010 382 0101111110 1010000001 385 1001111110 0110000001 386 1001111101 0110000010 387 1001111100 0110000011 388 1001111011 0110000100 389 1001111010 0110000101 390 1001111001 0110000110 391 0110000111 1001111000 392 1001110111 0110001000 393 1001110110 0110001001 394 1001110101 0110001010 395 0110001011 1001110100 396 1001110011 0110001100 397 0110001101 1001110010 398 0110001110 1001110001 401 1001101110 0110010001 402 1001101101 0110010010 403 0110010011 1001101100 404 1001101011 0110010100 405 0110010101 1001101010 406 0110010110 1001101001 407 0110010111 1001101000 408 1001100111 0110011000 409 0110011001 1001100110 410 0110011010 1001100101 411 0110011011 1001100100 412 0110011100 1001100011 413 0110011101 1001100010 414 0110011110 1001100001 417 1001011110 0110100001 418 1001011101 0110100010 419 0110100011 1001011100 420 1001011011 0110100100 421 0110100101 1001011010 422 0110100110 1001011001 423 0110100111 1001011000 424 1001010111 0110101000 425 0110101001 1001010110 426 0110101010 1001010101 427 0110101011 1001010100 428 0110101100 1001010011 429 0110101101 1001010010 430 0110101110 1001010001 433 0110110001 1001001110 434 0110110010 1001001101 435 0110110011 1001001100 436 0110110100 1001001011 437 0110110101 1001001010 438 0110110110 1001001001 439 0110110111 1001001000 440 0110111000 1001000111 441 0110111001 1001000110 442 0110111010 1001000101 443 0110111011 1001000100 444 0110111100 1001000011 445 0110111101 1001000010 446 0110111110 1001000001 449 1000111110 0111000001 450 1000111101 0111000010 451 0111000011 1000111100 452 1000111011 0111000100 453 0111000101 1000111010 454 0111000110 1000111001 455 0111000111 1000111000 456 1000110111 0111001000 457 0111001001 1000110110 458 0111001010 1000110101 459 0111001011 1000110100 460 0111001100 1000110011 461 0111001101 1000110010 462 0111001110 1000110001 465 0111010001 1000101110 466 0111010010 1000101101 467 0111010011 1000101100 468 0111010100 1000101011 469 0111010101 1000101010 470 0111010110 1000101001 471 0111010111 1000101000 472 0111011000 1000100111 473 0111011001 1000100110 474 0111011010 1000100101 475 0111011011 1000100100 476 0111011100 1000100011 477 0111011101 1000100010 478 0111011110 1000100001 481 0111100001 1000011110 482 0111100010 1000011101 483 0111100011 1000011100 484 0111100100 1000011011 485 0111100101 1000011010 486 0111100110 1000011001 487 0111100111 1000011000 488 0111101000 1000010111 489 0111101001 1000010110 490 0111101010 1000010101 491 0111101011 1000010100 492 0111101100 1000010011 493 0111101101 1000010010 494 0111101110 1000010001 497 0111110001 1000001110 498 0111110010 1000001101 499 0111110011 1000001100 500 0111110100 1000001011 501 0111110101 1000001010 502 0111110110 1000001001 504 0111111000 1000000111 505 0111111001 1000000110 506 0111111010 1000000101 508 0111111100 1000000011,
and the secondary mapping is
Decimal Code Word Code Word Representation of Positive of Negative of Input Word Codebook Codebook 0 1100010011 0011101100 1 1000011110 0111100001 2 1000011101 0111100010 3 1110000110 0001111001 4 1000011011 0111100100 5 1110001010 0001110101 6 1110000101 0001111010 7 1110010010 0001101101 8 1000010111 0111101000 9 1110010100 0001101011 10 1110001001 0001110110 11 1100010110 0011101001 12 1100100011 0011011100 13 1100011010 0011100101 14 1110010001 0001101110 15 1100100110 0011011001 16 1101000011 0010111100 17 1100001110 0011110001 18 1100001101 0011110010 19 1100101010 0011010101 20 1100001011 0011110100 21 1100110010 0011001101 22 1100010101 0011101010 23 1101000110 0010111001 24 1100000111 0011111000 25 1101001010 0010110101 26 1100011001 0011100110 27 1101010010 0010101101 28 1000110011 0111001100 29 1101010100 0010101011 30 1100100101 0011011010 31 1001110010 0110001101 32 1001010011 0110101100 33 1000101110 0111010001 34 1000101101 0111010010 36 1000101011 0111010100 40 1000100111 0111011000 47 1010010110 0101101001 48 1001100011 0110011100 55 1010011010 0101100101 59 1010100110 0101011001 61 1010101010 0101010101 62 1100101001 0011010110 63 1010110010 0101001101 64 1110100001 0001011110 65 1001001110 0110110001 66 1001001101 0110110010 68 1110000011 0001111100 72 1001000111 0110111000 79 1110100010 0001011101 80 1110101000 0001010111 95 1110100100 0001011011 96 1010010011 0101101100 111 1110011000 0001100111 112 1010100011 0101011100 127 1110001100 0001110011 128 1101100001 0010011110 129 1010001110 0101110001 130 1010001101 0101110010 132 1001001011 0110110100 136 1010000111 0101111000 143 1101100010 0010011101 144 1101101000 0010010111 159 1101100100 0010011011 160 1011000011 0100111100 175 1101011000 0010100111 176 1100110001 0011001110 191 1101001100 0010110011 192 1101000101 0010111010 207 1100111000 0011000111 208 1101001001 0010110110 223 1100011100 0011100011 224 1101010001 0010101110 239 1100101100 0011010011 240 1000110101 0111001010 255 1100110100 0011001011 256 1011100001 0100011110 257 1011100010 0100011101 258 1011101000 0100010111 260 1010001011 0101110100 264 1001010101 0110101010 271 1011011000 0100100111 272 1001011001 0110100110 287 1011100100 0100011011 288 1001100101 0110011010 303 1010011100 0101100011 304 1001101001 0110010110 319 1010101100 0101010011 320 1001110001 0110001110 335 1010111000 0101000111 336 1010010101 0101101010 351 1010110100 0101001011 352 1010011001 0101100110 367 1011001100 0100110011 368 1010100101 0101011010 383 1011010100 0100101011 384 1010101001 0101010110 399 1001111000 0110000111 400 1010110001 0101001110 415 1001011100 0110100011 416 1011000101 0100111010 431 1001101100 0110010011 432 1011001001 0100110110 447 1001110100 0110001011 448 1011010001 0100101110 463 1000110110 0111001001 464 1011000110 0100111001 479 1001010110 0110101001 480 1011001010 0100110101 495 1001011010 0 0110100101 496 1011010010 0 0100101101 503 1001100110 0 0110011001 507 1000111100 0 0111000011 509 1000111010 0 0111000101 510 1000111001 0 0111000110 511 1001101010 0 0110010101,
said method including the steps of:
employing first circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies a first criterion, and employing the first circuitry to generate one of the code words of the negative codebook in response to said each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the criterion;
and
employing logic circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the first subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies the first criterion, and employing the logic circuitry to generate one of the code words of the negative codebook in response to each of the input words that belongs to first subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion.

4 more elements

A method for encoding a sequence of 9-bit input words of data in accordance with a mapping to generate a code word sequence of 10-bit code words, wherein the mapping is between a data word set of 299-bit data words and a code word set of 10-bit code words consisting of a positive codebook and a negative codebook, the mapping includes a secondary mapping and a primary mapping, the primary mapping maps input words of a first subset of the data word set to a first subset of the code word set, the secondary mapping maps input words of a second subset of the data word set to a second subset of the code word set, the primary mapping is

Code word Code word of Positive of Negative Input Word Codebook Codebook 000100011 1111011100 0000100011 000100101 1111011010 0000100101 000100110 1111011001 0000100110 000100111 1111011000 0000100111 000101001 1111010110 0000101001 000101010 1111010101 0000101010 000101011 1111010100 0000101011 000101100 1111010011 0000101100 000101101 1111010010 0000101101 000101110 1111010001 0000101110 000110001 1111001110 0000110001 000110010 1111001101 0000110010 000110011 1111001100 0000110011 000110100 1111001011 0000110100 000110101 1111001010 0000110101 000110110 1111001001 0000110110 000111000 1111000111 0000111000 000111001 1111000110 0000111001 000111010 1111000101 0000111010 000111100 1111000011 0000111100 001000011 1110111100 0001000011 001000101 1110111010 0001000101 001000110 1110111001 0001000110 001000111 1110111000 0001000111 001001001 1110110110 0001001001 001001010 1110110101 0001001010 001001011 1110110100 0001001011 001001100 1110110011 0001001100 001001101 1110110010 0001001101 001001110 1110110001 0001001110 001010001 1110101110 0001010001 001010010 1110101101 0001010010 001010011 1110101100 0001010011 001010100 1110101011 0001010100 001010101 1110101010 0001010101 001010110 1110101001 0001010110 001010111 0001010111 0001010111 001011000 1110100111 0001011000 001011001 1110100110 0001011001 001011010 1110100101 0001011010 001011011 0001011011 0001011011 001011100 1110100011 0001011100 001011101 0001011101 0001011101 001011110 0001011110 0001011110 001100001 1110011110 0001100001 001100010 1110011101 0001100010 001100011 1110011100 0001100011 001100100 1110011011 0001100100 001100101 1110011010 0001100101 001100110 1110011001 0001100110 001100111 0001100111 0001100111 001101000 1110010111 0001101000 001101001 1110010110 0001101001 001101010 1110010101 0001101010 001101011 0001101011 0001101011 001101100 1110010011 0001101100 001101101 0001101101 0001101101 001101110 0001101110 0001101110 001110001 1110001110 0001110001 001110010 1110001101 0001110010 001110011 0001110011 0001110011 001110100 1110001011 0001110100 001110101 0001110101 0001110101 001110110 0001110110 0001110110 001110111 0001110111 1110001000 001111000 1110000111 0001111000 001111001 0001111001 0001111001 001111010 0001111010 0001111010 001111011 0001111011 1110000100 001111100 0001111100 0001111100 001111101 0001111101 1110000010 001111110 0001111110 1110000001 010000011 1101111100 0010000011 010000101 1101111010 0010000101 010000110 1101111001 0010000110 010000111 1101111000 0010000111 010001001 1101110110 0010001001 010001010 1101110101 0010001010 010001011 1101110100 0010001011 010001100 1101110011 0010001100 010001101 1101110010 0010001101 010001110 1101110001 0010001110 010010001 1101101110 0010010001 010010010 1101101101 0010010010 010010011 1101101100 0010010011 010010100 1101101011 0010010100 010010101 1101101010 0010010101 010010110 1101101001 0010010110 010010111 0010010111 0010010111 010011000 1101100111 0010011000 010011001 1101100110 0010011001 010011010 1101100101 0010011010 010011011 0010011011 0010011011 010011100 1101100011 0010011100 010011101 0010011101 0010011101 010011110 0010011110 0010011110 010100001 1101011110 0010100001 010100010 1101011101 0010100010 010100011 1101011100 0010100011 010100100 1101011011 0010100100 010100101 1101011010 0010100101 010100110 1101011001 0010100110 010100111 0010100111 0010100111 010101000 1101010111 0010101000 010101001 1101010110 0010101001 010101010 1101010101 0010101010 010101011 0010101011 0010101011 010101100 1101010011 0010101100 010101101 0010101101 0010101101 010101110 0010101110 0010101110 010110001 1101001110 0010110001 010110010 1101001101 0010110010 010110011 0010110011 0010110011 010110100 1101001011 0010110100 010110101 0010110101 0010110101 010110110 0010110110 0010110110 010110111 0010110111 1101001000 010111000 1101000111 0010111000 010111001 0010111001 0010111001 010111010 0010111010 0010111010 010111011 0010111011 1101000100 010111100 0010111100 0010111100 010111101 0010111101 1101000010 010111110 0010111110 1101000001 011000001 1100111110 0011000001 011000010 1100111101 0011000010 011000011 1100111100 0011000011 011000100 1100111011 0011000100 011000101 1100111010 0011000101 011000110 1100111001 0011000110 011000111 0011000111 0011000111 011001000 1100110111 0011001000 011001001 1100110110 0011001001 011001010 1100110101 0011001010 011001011 0011001011 0011001011 011001100 1100110011 0011001100 011001101 0011001101 0011001101 011001110 0011001110 0011001110 011010001 1100101110 0011010001 011010010 1100101101 0011010010 011010011 0011010011 0011010011 011010100 1100101011 0011010100 011010101 0011010101 0011010101 011010110 0011010110 0011010110 011010111 0011010111 1100101000 011011000 1100100111 0011011000 011011001 0011011001 0011011001 011011010 0011011010 0011011010 011011011 0011011011 1100100100 011011100 0011011100 0011011100 011011101 0011011101 1100100010 011011110 0011011110 1100100001 011100001 1100011110 0011100001 011100010 1100011101 0011100010 011100011 0011100011 0011100011 011100100 1100011011 0011100100 011100101 0011100101 0011100101 011100110 0011100110 0011100110 011100111 0011100111 1100011000 011101000 1100010111 0011101000 011101001 0011101001 0011101001 011101010 0011101010 0011101010 011101011 0011101011 1100010100 011101100 0011101100 0011101100 011101101 0011101101 1100010010 011101110 0011101110 1100010001 011110001 0011110001 0011110001 011110010 0011110010 0011110010 011110011 0011110011 1100001100 011110100 0011110100 0011110100 011110101 0011110101 1100001010 011110110 0011110110 1100001001 011110111 0011110111 1100001000 011111000 0011111000 0011111000 011111001 0011111001 1100000110 011111010 0011111010 1100000101 011111011 0011111011 1100000100 011111100 0011111100 1100000011 011111101 0011111101 1100000010 011111110 0011111110 1100000001 100000011 1011111100 0100000011 100000101 1011111010 0100000101 100000110 1011111001 0100000110 100000111 1011111000 0100000111 100001001 1011110110 0100001001 100001010 1011110101 0100001010 100001011 1011110100 0100001011 100001100 1011110011 0100001100 100001101 1011110010 0100001101 100001110 1011110001 0100001110 100010001 1011101110 0100010001 100010010 1011101101 0100010010 100010011 1011101100 0100010011 100010100 1011101011 0100010100 100010101 1011101010 0100010101 100010110 1011101001 0100010110 100010111 0100010111 0100010111 100011000 1011100111 0100011000 100011001 1011100110 0100011001 100011010 1011100101 0100011010 100011011 0100011011 0100011011 100011100 1011100011 0100011100 100011101 0100011101 0100011101 100011110 0100011110 0100011110 100100001 1011011110 0100100001 100100010 1011011101 0100100010 100100011 1011011100 0100100011 100100100 1011011011 0100100100 100100101 1011011010 0100100101 100100110 1011011001 0100100110 100100111 0100100111 0100100111 100101000 1011010111 0100101000 100101001 1011010110 0100101001 100101010 1011010101 0100101010 100101011 0100101011 0100101011 100101100 1011010011 0100101100 100101101 0100101101 0100101101 100101110 0100101110 0100101110 100110001 1011001110 0100110001 100110010 1011001101 0100110010 100110011 0100110011 0100110011 100110100 1011001011 0100110100 100110101 0100110101 0100110101 100110110 0100110110 0100110110 100110111 0100110111 1011001000 100111000 1011000111 0100111000 100111001 0100111001 0100111001 100111010 0100111010 0100111010 100111011 0100111011 1011000100 100111100 0100111100 0100111100 100111101 0100111101 1011000010 100111110 0100111110 1011000001 101000001 1010111110 0101000001 101000010 1010111101 0101000010 101000011 1010111100 0101000011 101000100 1010111011 0101000100 101000101 1010111010 0101000101 101000110 1010111001 0101000110 101000111 0101000111 0101000111 101001000 1010110111 0101001000 101001001 1010110110 0101001001 101001010 1010110101 0101001010 101001011 0101001011 0101001011 101001100 1010110011 0101001100 101001101 0101001101 0101001101 101001110 0101001110 0101001110 101010001 1010101110 0101010001 101010010 1010101101 0101010010 101010011 0101010011 0101010011 101010100 1010101011 0101010100 101010101 0101010101 0101010101 101010110 0101010110 0101010110 101010111 0101010111 1010101000 101011000 1010100111 0101011000 101011001 0101011001 0101011001 101011010 0101011010 0101011010 101011011 0101011011 1010100100 101011100 0101011100 0101011100 101011101 0101011101 1010100010 101011110 0101011110 1010100001 101100001 1010011110 0101100001 101100010 1010011101 0101100010 101100011 0101100011 0101100011 101100100 1010011011 0101100100 101100101 0101100101 0101100101 101100110 0101100110 0101100110 101100111 0101100111 1010011000 101101000 1010010111 0101101000 101101001 0101101001 0101101001 101101010 0101101010 0101101010 101101011 0101101011 1010010100 101101100 0101101100 0101101100 101101101 0101101101 1010010010 101101110 0101101110 1010010001 101110001 0101110001 0101110001 101110010 0101110010 0101110010 101110011 0101110011 1010001100 101110100 0101110100 0101110100 101110101 0101110101 1010001010 101110110 0101110110 1010001001 101110111 0101110111 1010001000 101111000 0101111000 0101111000 101111001 0101111001 1010000110 101111010 0101111010 1010000101 101111011 0101111011 1010000100 101111100 0101111100 1010000011 101111101 0101111101 1010000010 101111110 0101111110 1010000001 110000001 1001111110 0110000001 110000010 1001111101 0110000010 110000011 1001111100 0110000011 110000100 1001111011 0110000100 110000101 1001111010 0110000101 110000110 1001111001 0110000110 110000111 0110000111 0110000111 110001000 1001110111 0110001000 110001001 1001110110 0110001001 110001010 1001110101 0110001010 110001011 0110001011 0110001011 110001100 1001110011 0110001100 110001101 0110001101 0110001101 110001110 0110001110 0110001110 110010001 1001101110 0110010001 110010010 1001101101 0110010010 110010011 0110010011 0110010011 110010100 1001101011 0110010100 110010101 0110010101 0110010101 110010110 0110010110 0110010110 110010111 0110010111 1001101000 110011000 1001100111 0110011000 110011001 0110011001 0110011001 110011010 0110011010 0110011010 110011011 0110011011 1001100100 110011100 0110011100 0110011100 110011101 0110011101 1001100010 110011110 0110011110 1001100001 110100001 1001011110 0110100001 110100010 1001011101 0110100010 110100011 0110100011 0110100011 110100100 1001011011 0110100100 110100101 0110100101 0110100101 110100110 0110100110 0110100110 110100111 0110100111 1001011000 110101000 1001010111 0110101000 110101001 0110101001 0110101001 110101010 0110101010 0110101010 110101011 0110101011 1001010100 110101100 0110101100 0110101100 110101101 0110101101 1001010010 110101110 0110101110 1001010001 110110001 0110110001 0110110001 110110010 0110110010 0110110010 110110011 0110110011 1001001100 110110100 0110110100 0110110100 110110101 0110110101 1001001010 110110110 0110110110 1001001001 110110111 0110110111 1001001000 110111000 0110111000 0110111000 110111001 0110111001 1001000110 110111010 0110111010 1001000101 110111011 0110111011 1001000100 110111100 0110111100 1001000011 110111101 0110111101 1001000010 110111110 0110111110 1001000001 111000001 1000111110 0111000001 111000010 1000111101 0111000010 111000011 0111000011 0111000011 111000100 1000111011 0111000100 111000101 0111000101 0111000101 111000110 0111000110 0111000110 111000111 0111000111 1000111000 111001000 1000110111 0111001000 111001001 0111001001 0111001001 111001010 0111001010 0111001010 111001011 0111001011 1000110100 111001100 0111001100 0111001100 111001101 0111001101 1000110010 111001110 0111001110 1000110001 111010001 0111010001 0111010001 111010010 0111010010 0111010010 111010011 0111010011 1000101100 111010100 0111010100 0111010100 111010101 0111010101 1000101010 111010110 0111010110 1000101001 111010111 0111010111 1000101000 111011000 0111011000 0111011000 111011001 0111011001 1000100110 111011010 0111011010 1000100101 111011011 0111011011 1000100100 111011100 0111011100 1000100011 111011101 0111011101 1000100010 111011110 0111011110 1000100001 111100001 0111100001 0111100001 111100010 0111100010 0111100010 111100011 0111100011 1000011100 111100100 0111100100 0111100100 111100101 0111100101 1000011010 111100110 0111100110 1000011001 111100111 0111100111 1000011000 111101000 0111101000 0111101000 111101001 0111101001 1000010110 111101010 0111101010 1000010101 111101011 0111101011 1000010100 111101100 0111101100 1000010011 111101101 0111101101 1000010010 111101110 0111101110 1000010001 111110001 0111110001 1000001110 111110010 0111110010 1000001101 111110011 0111110011 1000001100 111110100 0111110100 1000001011 111110101 0111110101 1000001010 111110110 0111110110 1000001001 111111000 0111111000 1000000111 111111001 0111111001 1000000110 111111010 0111111010 1000000101 111111100 0111111100 1000000011,
and the secondary mapping is
Code Word Code Word Of Positive Of Negative Input Word Codebook Codebook 000000000 1100010011 1100010011 000000001 1000011110 1000011110 000000010 1000011101 1000011101 000000011 1110000110 1110000110 000000100 1000011011 1000011011 000000101 1110001010 1110001010 000000110 1110000101 1110000101 000000111 1110010010 1110010010 000001000 1000010111 1000010111 000001001 1110010100 1110010100 000001010 1100001001 1110001001 000001011 1100010110 1100010110 000001100 1100100011 1100100011 000001101 1100011010 1100011010 000001110 1110010001 1110010001 000001111 1100100110 1100100110 000010000 1101000011 1101000011 000010001 1100001110 1100001110 000010010 1100001101 1100001101 000010011 1100101010 1100101010 000010100 1100001011 1100001011 000010101 1100110010 1100110010 000010110 1100010101 1100010101 000010111 1101000110 1101000110 000011000 1100000111 1100000111 000011001 1101001010 1101001010 000011010 1100011001 1100011001 000011011 1101010010 1101010010 000011100 1000110011 1000110011 000011101 1101010100 1101010100 000011110 1100100101 1100100101 000011111 1001110010 1001110010 000100000 1001010011 1001010011 000100001 1000101110 1000101110 000100010 1000101101 1000101101 000100100 1000101011 1000101011 000101000 1000100111 1000100111 000101111 1010010110 1010010110 000110000 1001100011 1001100011 000110111 1010011010 1010011010 000111011 1010100110 1010100110 000111101 1010101010 1010101010 000111110 1100101001 1100101001 000111111 1010110010 1010110010 001000000 1110100001 1110100001 001000001 1001001110 1001001110 001000010 1001001101 1001001101 001000100 1110000011 1110000011 001001000 1001000111 1001000111 001001111 1110100010 1110100010 001010000 1110101000 1110101000 001011111 1110100100 1110100100 001100000 1010010011 1010010011 001101111 1110011000 1110011000 001110000 1010100011 1010100011 001111111 1110001100 1110001100 010000000 1101100001 1101100001 010000001 1010001110 1010001110 010000010 1010001101 1010001101 010000100 1001001011 1001001011 010001000 1010000111 1010000111 010001111 1101100010 1101100010 010010000 1101101000 1101101000 010011111 1101100100 1101100100 010100000 1011000011 1011000011 010101111 1101011000 1101011000 010110000 1100110001 1100110001 010111111 1101001100 1101001100 011000000 1101000101 1101000101 011001111 1100111000 1100111000 011010000 1101001001 1101001001 011011111 1100011100 1100011100 011100000 1101010001 1101010001 011101111 1100101100 1100101100 011110000 1000110101 1000110101 011111111 1100110100 1100110100 100000000 1011100001 1011100001 100000001 1011100010 1011100010 100000010 1011101000 1011101000 100000100 1010001011 1010001011 100001000 1001010101 1001010101 100001111 1011011000 1011011000 100010000 1001011001 1001011001 100011111 1011100100 1011100100 100100000 1001100101 1001100101 100101111 1010011100 1010011100 100110000 1001101001 1001101001 100111111 1010101100 1010101100 101000000 1001110001 1001110001 101001111 1010111000 1010111000 101010000 1010010101 1010010101 101011111 1010110100 1010110100 101100000 1010011001 1010011001 101101111 1011001100 1011001100 101110000 1010100101 1010100101 101111111 1011010100 1011010100 110000000 1010101001 1010101001 110001111 1001111000 1001111000 110010000 1010110001 1010110001 110011111 1001011100 1001011100 110100000 1011000101 1011000101 110101111 1001101100 1001101100 110110000 1011001001 1011001001 110111111 1001110100 1001110100 111000000 1011010001 1011010001 111001111 1000110110 1000110110 111010000 1011000110 1011000110 111011111 1001010110 1001010110 111100000 1011001010 1011001010 111101111 1001011010 1001011010 111110000 1011010010 1011010010 111110111 1001100110 1001100110 111111011 1000111100 1000111100 111111101 1000111010 1000111010 111111110 1000111001 1000111001 111111111 1001101010 1001101010,
said method including the steps of:
employing first circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies a first criterion, and employing the first circuitry to generate one of the code words of the negative codebook in response to said each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion;
and
employing logic circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the first subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies the first criterion, and employing the logic circuitry to generate one of the code words of the negative codebook in response to each of the input words that belongs to first subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion.

4 more elements

A method for encoding a sequence of 9-bit input words of data in accordance with a mapping to generate a code word sequence of 10-bit code words, wherein the mapping is between a data word set of 299-bit data words and a code word set of 10-bit code words consisting of a positive codebook and a negative codebook, the mapping includes a secondary mapping and a primary mapping, the primary mapping maps input words of a first subset of the data word set to a first subset of the code word set, the secondary mapping maps input words of a second subset of the data word set to a second subset of the code word set, the primary mapping is

Decimal Code Word Code Word Representation of Positive of Negative of Input Word Codebook Codebook 65 1110111110 0001000001 66 1110111101 0001000010 67 1110111100 0001000011 68 1110111011 0001000100 69 1110111010 0001000101 70 1110111001 0001000110 71 1110111000 0001000111 72 1110110111 0001001000 73 1110110110 0001001001 74 1110110101 0001001010 75 1110110100 0001001011 76 1110110011 0001001100 77 1110110010 0001001101 78 1110110001 0001001110 80 1110101111 0001010000 81 1110101110 0001010001 82 1110101101 0001010010 83 1110101100 0001010011 84 1110101011 0001010100 85 1110101010 0001010101 86 1110101001 0001010110 87 0001010111 1110101000 88 1110100111 0001011000 89 1110100110 0001011001 90 1110100101 0001011010 91 0001011011 1110100100 92 1110100011 0001011100 93 0001011101 1110100010 94 0001011110 1110100001 97 1110011110 0001100001 98 1110011101 0001100010 99 1110011100 0001100011 100 1110011011 0001100100 101 1110011010 0001100101 102 1110011001 0001100110 103 0001100111 1110011000 104 1110010111 0001101000 105 1110010110 0001101001 106 1110010101 0001101010 107 0001101011 1110010100 108 1110010011 0001101100 109 0001101101 1110010010 110 0001101110 1110010001 113 1110001110 0001110001 114 1110001101 0001110010 115 0001110011 1110001100 116 1110001011 0001110100 117 0001110101 1110001010 118 0001110110 1110001001 121 0001111001 1110000110 122 0001111010 1110000101 129 1101111110 0010000001 130 1101111101 0010000010 131 1101111100 0010000011 132 1101111011 0010000100 133 1101111010 0010000101 134 1101111001 0010000110 135 1101111000 0010000111 136 1101110111 0010001000 137 1101110110 0010001001 138 1101110101 0010001010 139 1101110100 0010001011 140 1101110011 0010001100 141 1101110010 0010001101 142 1101110001 0010001110 144 1101101111 0010010000 145 1101101110 0010010001 146 1101101101 0010010010 147 1101101100 0010010011 148 1101101011 0010010100 149 1101101010 0010010101 150 1101101001 0010010110 151 0010010111 1101101000 152 1101100111 0010011000 153 1101100110 0010011001 154 1101100101 0010011010 155 0010011011 1101100100 156 1101100011 0010011100 157 0010011101 1101100010 158 0010011110 1101100001 161 1101011110 0010100001 162 1101011101 0010100010 163 1101011100 0010100011 164 1101011011 0010100100 165 1101011010 0010100101 166 1101011001 0010100110 167 0010100111 1101011000 168 1101010111 0010101000 169 1101010110 0010101001 170 1101010101 0010101010 171 0010101011 1101010100 172 1101010011 0010101100 173 0010101101 1101010010 174 0010101110 1101010001 175 0010101111 1101010000 176 1101001111 0010110000 177 1101001110 0010110001 178 1101001101 0010110010 179 0010110011 1101001100 180 1101001011 0010110100 181 0010110101 1101001010 182 0010110110 1101001001 183 0010110111 1101001000 184 1101000111 0010111000 185 0010111001 1101000110 186 0010111010 1101000101 187 0010111011 1101000100 188 0010111100 1101000011 189 0010111101 1101000010 190 0010111110 1101000001 193 1100111110 0011000001 194 1100111101 0011000010 195 1100111100 0011000011 196 1100111011 0011000100 197 1100111010 0011000101 198 1100111001 0011000110 199 0011000111 1100111000 200 1100110111 0011001000 201 1100110110 0011001001 202 1100110101 0011001010 203 0011001011 1100110100 204 1100110011 0011001100 205 0011001101 1100110010 206 0011001110 1100110001 207 0011001111 1100110000 208 1100101111 0011010000 209 1100101110 0011010001 210 1100101101 0011010010 211 0011010011 1100101100 212 1100101011 0011010100 213 0011010101 1100101010 214 0011010110 1100101001 215 0011010111 1100101000 216 1100100111 0011011000 217 0011011001 1100100110 218 0011011010 1100100101 219 0011011011 1100100100 220 0011011100 1100100011 221 0011011101 1100100010 222 0011011110 1100100001 225 1100011110 0011100001 226 1100011101 0011100010 227 0011100011 1100011100 228 1100011011 0011100100 229 0011100101 1100011010 230 0011100110 1100011001 231 0011100111 1100011000 232 1100010111 0011101000 233 0011101001 1100010110 234 0011101010 1100010101 235 0011101011 1100010100 236 0011101100 1100010011 237 0011101101 1100010010 238 0011101110 1100010001 239 0011101111 1100010000 241 0011110001 1100001110 242 0011110010 1100001101 243 0011110011 1100001100 244 0011110100 1100001011 245 0011110101 1100001010 246 0011110110 1100001001 247 0011110111 1100001000 249 0011111001 1100000110 250 0011111010 1100000101 251 0011111011 1100000100 253 0011111101 1100000010 258 1011111101 0100000010 259 1011111100 0100000011 260 1011111011 0100000100 261 1011111010 0100000101 262 1011111001 0100000110 263 1011111000 0100000111 264 1011110111 0100001000 265 1011110110 0100001001 266 1011110101 0100001010 267 1011110100 0100001011 268 1011110011 0100001100 269 1011110010 0100001101 270 1011110001 0100001110 272 1011101111 0100010000 273 1011101110 0100010001 274 1011101101 0100010010 275 1011101100 0100010011 276 1011101011 0100010100 277 1011101010 0100010101 278 1011101001 0100010110 279 0100010111 1011101000 280 1011100111 0100011000 281 1011100110 0100011001 282 1011100101 0100011010 283 0100011011 1011100100 284 1011100011 0100011100 285 0100011101 1011100010 286 0100011110 1011100001 289 1011011110 0100100001 290 1011011101 0100100010 291 1011011100 0100100011 292 1011011011 0100100100 293 1011011010 0100100101 294 1011011001 0100100110 295 0100100111 1011011000 296 1011010111 0100101000 297 1011010110 0100101001 298 1011010101 0100101010 299 0100101011 1011010100 300 1011010011 0100101100 301 0100101101 1011010010 302 0100101110 1011010001 303 0100101111 1011010000 304 1011001111 0100110000 305 1011001110 0100110001 306 1011001101 0100110010 307 0100110011 1011001100 308 1011001011 0100110100 309 0100110101 1011001010 310 0100110110 1011001001 311 0100110111 1011001000 312 1011000111 0100111000 313 0100111001 1011000110 314 0100111010 1011000101 315 0100111011 1011000100 316 0100111100 1011000011 317 0100111101 1011000010 318 0100111110 1011000001 321 1010111110 0101000001 322 1010111101 0101000010 323 1010111100 0101000011 324 1010111011 0101000100 325 1010111010 0101000101 326 1010111001 0101000110 327 0101000111 1010111000 328 1010110111 0101001000 329 1010110110 0101001001 330 1010110101 0101001010 331 0101001011 1010110100 332 1010110011 0101001100 333 0101001101 1010110010 334 0101001110 1010110001 335 0101001111 1010110000 336 1010101111 0101010000 337 1010101110 0101010001 338 1010101101 0101010010 339 0101010011 1010101100 340 1010101011 0101010100 341 0101010101 1010101010 342 0101010110 1010101001 343 0101010111 1010101000 344 1010100111 0101011000 345 0101011001 1010100110 346 0101011010 1010100101 347 0101011011 1010100100 348 0101011100 1010100011 349 0101011101 1010100010 350 0101011110 1010100001 353 1010011110 0101100001 354 1010011101 0101100010 355 0101100011 1010011100 356 1010011011 0101100100 357 0101100101 1010011010 358 0101100110 1010011001 359 0101100111 1010011000 360 1010010111 0101101000 361 0101101001 1010010110 362 0101101010 1010010101 363 0101101011 1010010100 364 0101101100 1010010011 365 0101101101 1010010010 366 0101101110 1010010001 367 0101101111 1010010000 368 1010001111 0101110000 369 0101110001 1010001110 370 0101110010 1010001101 371 0101110011 1010001100 372 0101110100 1010001011 373 0101110101 1010001010 374 0101110110 1010001001 375 0101110111 1010001000 376 0101111000 1010000111 377 0101111001 1010000110 378 0101111010 1010000101 379 0101111011 1010000100 380 0101111100 1010000011 381 0101111101 1010000010 382 0101111110 1010000001 385 1001111110 0110000001 386 1001111101 0110000010 387 1001111100 0110000011 388 1001111011 0110000100 389 1001111010 0110000101 390 1001111001 0110000110 391 0110000111 1001111000 392 1001110111 0110001000 393 1001110110 0110001001 394 1001110101 0110001010 395 0110001011 1001110100 396 1001110011 0110001100 397 0110001101 1001110010 398 0110001110 1001110001 399 0110001111 1001110000 400 1001101111 0110010000 401 1001101110 0110010001 402 1001101101 0110010010 403 0110010011 1001101100 404 1001101011 0110010100 405 0110010101 1001101010 406 0110010110 1001101001 407 0110010111 1001101000 408 1001100111 0110011000 409 0110011001 1001100110 410 0110011010 1001100101 411 0110011011 1001100100 412 0110011100 1001100011 413 0110011101 1001100010 414 0110011110 1001100001 417 1001011110 0110100001 418 1001011101 0110100010 419 0110100011 1001011100 420 1001011011 0110100100 421 0110100101 1001011010 422 0110100110 1001011001 423 0110100111 1001011000 424 1001010111 0110101000 425 0110101001 1001010110 426 0110101010 1001010101 427 0110101011 1001010100 428 0110101100 1001010011 429 0110101101 1001010010 430 0110101110 1001010001 431 0110101111 1001010000 432 1001001111 0110110000 433 0110110001 1001001110 434 0110110010 1001001101 435 0110110011 1001001100 436 0110110100 1001001011 437 0110110101 1001001010 438 0110110110 1001001001 439 0110110111 1001001000 440 0110111000 1001000111 441 0110111001 1001000110 442 0110111010 1001000101 443 0110111011 1001000100 444 0110111100 1001000011 445 0110111101 1001000010 446 0110111110 1001000001 449 1000111110 0111000001 450 1000111101 0111000010 451 0111000011 1000111100 452 1000111011 0111000100 453 0111000101 1000111010 454 0111000110 1000111001 455 0111000111 1000111000 456 1000110111 0111001000 457 0111001001 1000110110 458 0111001010 1000110101 459 0111001011 1000110100 460 0111001100 1000110011 461 0111001101 1000110010 462 0111001110 1000110001 463 0111001111 1000110000 464 1000101111 0111010000 465 0111010001 1000101110 466 0111010010 1000101101 467 0111010011 1000101100 468 0111010100 1000101011 469 0111010101 1000101010 470 0111010110 1000101001 471 0111010111 1000101000 472 0111011000 1000100111 473 0111011001 1000100110 474 0111011010 1000100101 475 0111011011 1000100100 476 0111011100 1000100011 477 0111011101 1000100010 478 0111011110 1000100001 481 0111100001 1000011110 482 0111100010 1000011101 483 0111100011 1000011100 484 0111100100 1000011011 485 0111100101 1000011010 486 0111100110 1000011001 487 0111100111 1000011000 488 0111101000 1000010111 489 0111101001 1000010110 490 0111101010 1000010101 491 0111101011 1000010100 492 0111101100 1000010011 493 0111101101 1000010010 494 0111101110 1000010001 495 0111101111 1000010000 497 0111110001 1000001110 498 0111110010 1000001101 499 0111110011 1000001100 500 0111110100 1000001011 501 0111110101 1000001010 502 0111110110 1000001001 503 0111110111 1000001000 505 0111111001 1000000110 506 0111111010 1000000101 507 0111111011 1000000100,
and the secondary mapping is
Decimal Code Word Code Word Representation of Positive of Negative of Input Word Codebook Codebook 0 1001000111 0110111000 1 1000011110 0111100001 2 1000011101 0111100010 3 1100010110 0011101001 4 1000011011 0111100100 5 1100011010 0011100101 6 1100010101 0011101010 7 1100100110 0011011001 8 1000010111 0111101000 9 1110000110 0001111001 10 1110000101 0001111010 11 1100101010 0011010101 12 1100100011 0011011100 13 1100101100 0011010011 14 1100100101 0011011010 15 1100110010 0011001101 16 1000101011 0111010100 17 1100001110 0011110001 18 1100001101 0011110010 19 1100110100 0011001011 20 1100001011 0011110100 21 1101010010 0010101101 22 1100101001 0011010110 23 1101010100 0010101011 24 1001001011 0110110100 25 1101011000 0010100111 26 1100110001 0011001110 27 1101100010 0010011101 28 1001010011 0110101100 29 1101101000 0010010111 30 1000101101 0111010010 31 1000101110 0111010001 32 1001100011 0110011100 33 1000110110 0111001001 34 1000110101 0111001010 35 1001001110 0110110001 36 1010001011 0101110100 37 1001010110 0110101001 38 1001001101 0110110010 39 1001011010 0110100101 40 1010010011 0101101100 41 1001100110 0110011001 42 1001010101 0110101010 43 1001101010 0110010101 44 1010100011 0101011100 45 1001110010 0110001101 46 1001011001 0110100110 47 1001110100 0110001011 48 1001100101 0110011010 49 1010001110 0101110001 50 1001101001 0110010110 51 1010010110 0101101001 52 1001110001 0110001110 53 1010011010 0101100101 54 1010001101 0101110010 55 1010100110 0101011001 56 1010010101 0101101010 57 1010101010 0101010101 58 1010011001 0101100110 59 1010101100 0101010011 60 1010100101 0101011010 61 1010110010 0101001101 62 1010101001 0101010110 63 1010110100 0101001011 64 1110100001 0001011110 79 1110100010 0001011101 95 1110100100 0001011011 96 1110010001 0001101110 111 1110010100 0001101011 112 1110101000 0001010111 119 1110001100 0001110011 120 1010110001 0101001110 123 1110010010 0001101101 124 1011011000 0100100111 125 1110001010 0001110101 126 1110001001 0001110110 127 1110011000 0001100111 128 1101000011 0010111100 143 1101100001 0010011110 159 1101100100 0010011011 160 1101000101 0010111010 191 1101001100 0010110011 192 1101001001 0010110110 223 1100111000 0011000111 224 1101010001 0010101110 240 1101000110 0010111001 248 1101001010 0010110101 252 1100010011 0011101100 254 1100011001 0011100110 255 1100011100 0011100011 256 1010000111 0101111000 257 1011100001 0100011110 271 1011100010 0100011101 287 1011100100 0100011011 288 1011000011 0100111100 319 1011001100 0100110011 320 1011000101 0100111010 351 1010111000 0101000111 352 1011001001 0100110110 383 1010011100 0101100011 384 1011010001 0100101110 415 1001111000 0110000111 416 1011000110 0100111001 447 1000111100 0111000011 448 1011001010 0100110101 479 1001011100 0110100011 480 1011010010 0100101101 496 1011010100 0100101011 504 1000100111 0111011000 508 1000110011 0111001100 509 1000111010 0111000101 510 1000111001 0111000110 511 1001101100 0110010011,
said method including the steps of:
employing first circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies a first criterion, and employing the first circuitry to generate one of the code words of the negative codebook in response to said each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion;
and
employing logic circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the first subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies the first criterion, and employing the logic circuitry to generate one of the code words of the negative codebook in response to each of the input words that belongs to the first subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion.

4 more elements

A method for encoding a sequence of 9-bit input words of data in accordance with a mapping to generate a code word sequence of 10-bit code words, wherein the mapping is between a data word set of 299-bit data words and a code word set of 10-bit code words consisting of a positive codebook and a negative codebook, the mapping includes a secondary mapping and a primary mapping, the primary mapping maps input words of a first subset of the data word set to a first subset of the code word set, the secondary mapping maps input words of a second subset of the data word set to a second subset of the code word set, the primary mapping is

Code Word Code Word of Positive of Negative Input Word Codebook Codebook 001000001 1110111110 0001000001 001000010 1110111101 0001000010 001000011 1110111100 0001000011 001000100 1110111011 0001000100 001000101 1110111010 0001000101 001000110 1110111001 0001000110 001000111 1110111000 0001000111 001001000 1110110111 0001001000 001001001 1110110110 0001001001 001001010 1110110101 0001001010 001001011 1110110100 0001001011 001001100 1110110011 0001001100 001001101 1110110010 0001001101 001001110 1110110001 0001001110 001010000 1110101111 0001010000 001010001 1110101110 0001010001 001010010 1110101101 0001010010 001010011 1110101100 0001010011 001010100 1110101011 0001010100 001010101 1110101010 0001010101 001010110 1110101001 0001010110 001010111 0001010111 0001010111 001011000 1110100111 0001011000 001011001 1110100110 0001011001 001011010 1110100101 0001011010 001011011 0001011011 0001011011 001011100 1110100011 0001011100 001011101 0001011101 0001011101 001011110 0001011110 0001011110 001100001 1110011110 0001100001 001100010 1110011101 0001100010 001100011 1110011100 0001100011 001100100 1110011011 0001100100 001100101 1110011010 0001100101 001100110 1110011001 0001100110 001100111 0001100111 0001100111 001101000 1110010111 0001101000 001101001 1110010110 0001101001 001101010 1110010101 0001101010 001101011 0001101011 0001101011 001101100 1110010011 0001101100 001101101 0001101101 0001101101 001101110 0001101110 0001101110 001110001 1110001110 0001110001 001110010 1110001101 0001110010 001110011 0001110011 0001110011 001110100 1110001011 0001110100 001110101 0001110101 0001110101 001110110 0001110110 0001110110 001111001 0001111001 0001111001 001111010 0001111010 0001111010 010000001 1101111110 0010000001 010000010 1101111101 0010000010 010000011 1101111100 0010000011 010000100 1101111011 0010000100 010000101 1101111010 0010000101 010000110 1101111001 0010000110 010000111 1101111000 0010000111 010001000 1101110111 0010001000 010001001 1101110110 0010001001 010001010 1101110101 0010001010 010001011 1101110100 0010001011 010001100 1101110011 0010001100 010001101 1101110010 0010001101 010001110 1101110001 0010001110 010010000 1101101111 0010010000 010010001 1101101110 0010010001 010010010 1101101101 0010010010 010010011 1101101100 0010010011 010010100 1101101011 0010010100 010010101 1101101010 0010010101 010010110 1101101001 0010010110 010010111 0010010111 0010010111 010011000 1101100111 0010011000 010011001 1101100110 0010011001 010011010 1101100101 0010011010 010011011 0010011011 0010011011 010011100 1101100011 0010011100 010011101 0010011101 0010011101 010011110 0010011110 0010011110 010100001 1101011110 0010100001 010100010 1101011101 0010100010 010100011 1101011100 0010100011 010100100 1101011011 0010100100 010100101 1101011010 0010100101 010100110 1101011001 0010100110 010100111 0010100111 0010100111 010101000 1101010111 0010101000 010101001 1101010110 0010101001 010101010 1101010101 0010101010 010101011 0010101011 0010101011 010101100 1101010011 0010101100 010101101 0010101101 0010101101 010101110 0010101110 0010101110 010101111 0010101111 1101010000 010110000 1101001111 0010110000 010110001 1101001110 0010110001 010110010 1101001101 0010110010 010110011 0010110011 0010110011 010110100 1101001011 0010110100 010110101 0010110101 0010110101 010110110 0010110110 0010110110 010110111 0010110111 1101001000 010111000 1101000111 0010111000 010111001 0010111001 0010111001 010111010 0010111010 0010111010 010111011 0010111011 1101000100 010111100 0010111100 0010111100 010111101 0010111101 1101000010 010111110 0010111110 1101000001 011000001 1100111110 0011000001 011000010 1100111101 0011000010 011000011 1100111100 0011000011 011000100 1100111011 0011000100 011000101 1100111010 0011000101 011000110 1100111001 0011000110 011000111 0011000111 0011000111 011001000 1100110111 0011001000 011001001 1100110110 0011001001 011001010 1100110101 0011001010 011001011 0011001011 0011001011 011001100 1100110011 0011001100 011001101 0011001101 0011001101 011001110 0011001110 0011001110 011001111 0011001111 1100110000 011010000 1100101111 0011010000 011010001 1100101110 0011010001 011010010 1100101101 0011010010 011010011 0011010011 0011010011 011010100 1100101011 0011010100 011010101 0011010101 0011010101 011010110 0011010110 0011010110 011010111 0011010111 1100101000 011011000 1100100111 0011011000 011011001 0011011001 0011011001 011011010 0011011010 0011011010 011011011 0011011011 1100100100 011011100 0011011100 0011011100 011011101 0011011101 1100100010 011011110 0011011110 1100100001 011100001 1100011110 0011100001 011100010 1100011101 0011100010 011100011 0011100011 0011100011 011100100 1100011011 0011100100 011100101 0011100101 0011100101 011100110 0011100110 0011100110 011100111 0011100111 1100011000 011101000 1100010111 0011101000 011101001 0011101001 0011101001 011101010 0011101010 0011101010 011101011 0011101011 1100010100 011101100 0011101100 0011101100 011101101 0011101101 1100010010 011101110 0011101110 1100010001 011101111 0011101111 1100010000 011110001 0011110001 0011110001 011110010 0011110010 0011110010 011110011 0011110011 1100001100 011110100 0011110100 0011110100 011110101 0011110101 1100001010 011110110 0011110110 1100001001 011110111 0011110111 1100001000 011111000 1101001010 1101001010 011111001 0011111001 1100000110 011111010 0011111010 1100000101 011111011 0011111011 1100000100 011111101 0011111101 1100000010 100000010 1011111101 0100000010 100000011 1011111100 0100000011 100000100 1011111011 0100000100 100000101 1011111010 0100000101 100000110 1011111001 0100000110 100000111 1011111000 0100000111 100001000 1011110111 0100001000 100001001 1011110110 0100001001 100001010 1011110101 0100001010 100001011 1011110100 0100001011 100001100 1011110011 0100001100 100001101 1011110010 0100001101 100001110 1011110001 0100001110 100010000 1011101111 0100010000 100010001 1011101110 0100010001 100010010 1011101101 0100010010 100010011 1011101100 0100010011 100010100 1011101011 0100010100 100010101 1011101010 0100010101 100010110 1011101001 0100010110 100010111 0100010111 0100010111 100011000 1011100111 0100011000 100011001 1011100110 0100011001 100011010 1011100101 0100011010 100011011 0100011011 0100011011 100011100 1011100011 0100011100 100011101 0100011101 0100011101 100011110 0100011110 0100011110 100100001 1011011110 0100100001 100100010 1011011101 0100100010 100100011 1011011100 0100100011 100100100 1011011011 0100100100 100100101 1011011010 0100100101 100100110 1011011001 0100100110 100100111 0100100111 0100100111 100101000 1011010111 0100101000 100101001 1011010110 0100101001 100101010 1011010101 0100101010 100101011 0100101011 0100101011 100101100 1011010011 0100101100 100101101 0100101101 0100101101 100101110 0100101110 0100101110 100101111 0100101111 1011010000 100110000 1011001111 0100110000 100110001 1011001110 0100110001 100110010 1011001101 0100110010 100110011 0100110011 0100110011 100110100 1011001011 0100110100 100110101 0100110101 0100110101 100110110 0100110110 0100110110 100110111 0100110111 1011001000 100111000 1011000111 0100111000 100111001 0100111001 0100111001 100111010 0100111010 0100111010 100111011 0100111011 1011000100 100111100 0100111100 0100111100 100111101 0100111101 1011000010 100111110 0100111110 1011000001 100111111 1011001100 1011001100 101000000 1011000101 1011000101 101000001 1010111110 0101000001 101000010 1010111101 0101000010 101000011 1010111100 0101000011 101000100 1010111011 0101000100 101000101 1010111010 0101000101 101000110 1010111001 0101000110 101000111 0101000111 0101000111 101001000 1010110111 0101001000 101001001 1010110110 0101001001 101001010 1010110101 0101001010 101001011 0101001011 0101001011 101001100 1010110011 0101001100 101001101 0101001101 0101001101 101001110 0101001110 0101001110 101001111 0101001111 1010110000 101010000 1010101111 0101010000 101010001 1010101110 0101010001 101010010 1010101101 0101010010 101010011 0101010011 0101010011 101010100 1010101011 0101010100 101010101 0101010101 0101010101 101010110 0101010110 0101010110 101010111 0101010111 1010101000 101011000 1010100111 0101011000 101011001 0101011001 0101011001 101011010 0101011010 0101011010 101011011 0101011011 1010100100 101011100 0101011100 0101011100 101011101 0101011101 1010100010 101011110 0101011110 1010100001 101100001 1010011110 0101100001 101100010 1010011101 0101100010 101100011 0101100011 0101100011 101100100 1010011011 0101100100 101100101 0101100101 0101100101 101100110 0101100110 0101100110 101100111 0101100111 1010011000 101101000 1010010111 0101101000 101101001 0101101001 0101101001 101101010 0101101010 0101101010 101101011 0101101011 1010010100 101101100 0101101100 0101101100 101101101 0101101101 1010010010 101101110 0101101110 1010010001 101101111 0101101111 1010010000 101110000 1010001111 0101110000 101110001 0101110001 0101110001 101110010 0101110010 0101110010 101110011 0101110011 1010001100 101110100 0101110100 0101110100 101110101 0101110101 1010001010 101110110 0101110110 1010001001 101110111 0101110111 1010001000 101111000 0101111000 0101111000 101111001 0101111001 1010000110 101111010 0101111010 1010000101 101111011 0101111011 1010000100 101111100 0101111100 1010000011 101111101 0101111101 1010000010 101111110 0101111110 1010000001 110000001 1001111110 0110000001 110000010 1001111101 0110000010 110000011 1001111100 0110000011 110000100 1001111011 0110000100 110000101 1001111010 0110000101 110000110 1001111001 0110000110 110000111 0110000111 0110000111 110001000 1001110111 0110001000 110001001 1001110110 0110001001 110001010 1001110101 0110001010 110001011 0110001011 0110001011 110001100 1001110011 0110001100 110001101 0110001101 0110001101 110001110 0110001110 0110001110 110001111 0110001111 1001110000 110010000 1001101111 0110010000 110010001 1001101110 0110010001 110010010 1001101101 0110010010 110010011 0110010011 0110010011 110010100 1001101011 0110010100 110010101 0110010101 0110010101 110010110 0110010110 0110010110 110010111 0110010111 1001101000 110011000 1001100111 0110011000 110011001 0110011001 0110011001 110011010 0110011010 0110011010 110011011 0110011011 1001100100 110011100 0110011100 0110011100 110011101 0110011101 1001100010 110011110 0110011110 1001100001 110100001 1001011110 0110100001 110100010 1001011101 0110100010 110100011 0110100011 0110100011 110100100 1001011011 0110100100 110100101 0110100101 0110100101 110100110 0110100110 0110100110 110100111 0110100111 1001011000 110101000 1001010111 0110101000 110101001 0110101001 0110101001 110101010 0110101010 0110101010 110101011 0110101011 1001010100 110101100 0110101100 0110101100 110101101 0110101101 1001010010 110101110 0110101110 1001010001 110101111 0110101111 1001010000 110110000 1001001111 0110110000 110110001 0110110001 0110110001 110110010 0110110010 0110110010 110110011 0110110011 1001001100 110110100 0110110100 0110110100 110110101 0110110101 1001001010 110110110 0110110110 1001001001 110110111 0110110111 1001001000 110111000 0110111000 0110111000 110111001 0110111001 1001000110 110111010 0110111010 1001000101 110111011 0110111011 1001000100 110111100 0110111100 1001000011 110111101 0110111101 1001000010 110111110 0110111110 1001000001 111000001 1000111110 0111000001 111000010 1000111101 0111000010 111000011 0111000011 0111000011 111000100 1000111011 0111000100 111000101 0111000101 0111000101 111000110 0111000110 0111000110 111000111 0111000111 1000111000 111001000 1000110111 0111001000 111001001 0111001001 0111001001 111001010 0111001010 0111001010 111001011 0111001011 1000110100 111001100 0111001100 0111001100 111001101 0111001101 1000110010 111001110 0111001110 1000110001 111001111 0111001111 1000110000 111010000 1000101111 0111010000 111010001 0111010001 0111010001 111010010 0111010010 0111010010 111010011 0111010011 1000101100 111010100 0111010100 0111010100 111010101 0111010101 1000101010 111010110 0111010110 1000101001 111010111 0111010111 1000101000 111011000 0111011000 0111011000 111011001 0111011001 1000100110 111011010 0111011010 1000100101 111011011 0111011011 1000100100 111011100 0111011100 1000100011 111011101 0111011101 1000100010 111011110 0111011110 1000100001 111100001 0111100001 0111100001 111100010 0111100010 0111100010 111100011 0111100011 1000011100 111100100 0111100100 0111100100 111100101 0111100101 1000011010 111100110 0111100110 1000011001 111100111 0111100111 1000011000 111101000 0111101000 0111101000 111101001 0111101001 1000010110 111101010 0111101010 1000010101 111101011 0111101011 1000010100 111101100 0111101100 1000010011 111101101 0111101101 1000010010 111101110 0111101110 1000010001 111101111 0111101111 1000010000 111110001 0111110001 1000001110 111110010 0111110010 1000001101 111110011 0111110011 1000001100 111110100 0111110100 1000001011 111110101 0111110101 1000001010 111110110 0111110110 1000001001 111110111 0111110111 1000001000 111111001 0111111001 1000000110 111111010 0111111010 1000000101 111111011 0111111011 1000000100,
and the secondary mapping is
Code word Code word Of Positive Of Negative Input Word Codebook Codebook 000000000 1001000111 1001000111 000000001 1000011110 1000011110 000000010 1000011101 1000011101 000000011 1100010110 1100010110 000000100 1000011011 1000011011 000000101 1100011010 1100011010 000000110 1100010101 1100010101 000000111 1100100110 1100100110 000001000 1000010111 1000010111 000001001 1110000110 1110000110 000001010 1110000101 1110000101 000001011 1100101010 1100101010 000001100 1100100011 1100100011 000001101 1100101100 1100101100 000001110 1100100101 1100100101 000001111 1100110010 1100110010 000010000 1000101011 1000101011 000010001 1100001110 1100001110 000010010 1100001101 1100001101 000010011 1100110100 1100110100 000010100 1100001011 1100001011 000010101 1101010010 1101010010 000010110 1100101001 1100101001 000010111 1101010100 1101010100 000011000 1001001011 1001001011 000011001 1101011000 1101011000 000011010 1100110001 1100110001 000011011 1101100010 1101100010 000011100 1001010011 1001010011 000011101 1101101000 1101101000 000011110 1000101101 1000101101 000011111 1000101110 1000101110 000100000 1001100011 1001100011 000100001 1000110110 1000110110 000100010 1000110101 1000110101 000100011 1001001110 1001001110 000100100 1010001011 1010001011 000100101 1001010110 1001010110 000100110 1001001101 1001001101 000100111 1001011010 1001011010 000101000 1010010011 1010010011 000101001 1001100110 1001100110 000101010 1001010101 1001010101 000101011 1001101010 1001101010 000101100 1010100011 1010100011 000101101 1001110010 1001110010 000101110 1001011001 1001011001 000101111 1001110100 1001110100 000110000 1001100101 1001100101 000110001 1010001110 1010001110 000110010 1001101001 1001101001 000110011 1010010110 1010010110 000110100 1001110001 1001110001 000110101 1010011010 1010011010 000110110 1010001101 1010001101 000110111 1010100110 1010100110 000111000 1010010101 1010010101 000111001 1010101010 1010101010 000111010 1010011001 1010011001 000111011 1010101100 1010101100 000111100 1010100101 1010100101 000111101 1010110010 1010110010 000111110 1010101001 1010101001 000111111 1010110100 1010110100 001000000 1110100001 1110100001 001001111 1110100010 1110100010 001011111 1110100100 1110100100 001100000 1110010001 1110010001 001101111 1110010100 1110010100 001110000 1110101000 1110101000 001110111 1110001100 1110001100 001111000 1010110001 1010110001 001111011 1110010010 1110010010 001111100 1011011000 1011011000 001111101 1110001010 1110001010 001111110 1110001001 1110001001 001111111 1110011000 1110011000 010000000 1101000011 1101000011 010001111 1101100001 1101100001 010011111 1101100100 1101100100 010100000 1101000101 1101000101 010111111 1101001100 1101001100 011000000 1101001001 1101001001 011011111 1100111000 1100111000 011100000 1101010001 1101010001 011110000 1101000110 1101000110 011111000 1101001010 1101001010 011111100 1100010011 1100010011 011111110 1100011001 1100011001 011111111 1100011100 1100011100 100000000 1010000111 1010000111 100000001 1011100001 1011100001 100001111 1011100010 1011100010 100011111 1011100100 1011100100 100100000 1011000011 1011000011 100111111 1011001100 1011001100 101000000 1011000101 1011000101 101011111 1010111000 1010111000 101100000 1011001001 1011001001 101111111 1010011100 1010011100 110000000 1011010001 1011010001 110011111 1001111000 1001111000 110100000 1011000110 1011000110 110111111 1000111100 1000111100 111000000 1011001010 1011001010 111011111 1001011100 1001011100 111100000 1011010010 1011010010 111110000 1011010100 1011010100 111111000 1000100111 1000100111 111111100 1000110011 1000110011 111111101 1000111010 1000111010 111111110 1000111001 1000111001 111111111 1001101100 1001101100,
said method including the steps of:
employing first circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies a first criterion, and employing the first circuitry to generate one of the code words of the negative codebook in response to said each of the input words that belongs to the second subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion;
and
employing logic circuitry to generate one of the code words of the positive codebook in response to each of the input words that belongs to the first subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence satisfies the first criterion, and employing the logic circuitry to generate one of the code words of the negative codebook in response to each of the input words that belongs to the first subset of the data word set when the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion.

4 more elements

A method for decoding code words that have been encoded in accordance with an NB/(N+1)B block code that maps a set of 2N N-bit data words to a set of (N+1)-bit words using a positive codebook and a negative codebook, the positive codebook specifying a bijective mapping between the set of data words and a set of 2N (N+1)-bit words, fp(x), where x is any of the data words, and the negative codebook specifying a bijective mapping between the set of data words and a set of 2N (N+1)-bit words, fn(x), where the data words consist of a first data word subset and a second data word subset, the first data word subset includes more of the data words than does the second data word subset, and the block code specifies a secondary mapping of each data word of the second data word subset to a different one of the words, fp(x), and a primary mapping of each data word of the first data word subset to a different one of the words, fp(x), said method including the steps of:

(a) monitoring accumulated disparity of a sequence of the code words;
(b) while performing step (a), in response to each of the code words, applying said each of the code words to table lookup circuitry if the accumulated disparity satisfies a first criterion to cause the table lookup circuitry to apply an inverse of the secondary mapping to generate a first decoded word in response to each of the code words that is an encoded version of a data word of the second data word subset, and applying the complement of said each of the code words to the table lookup circuitry if the accumulated disparity does not satisfy the first criterion to cause the table lookup circuitry to apply the inverse of the secondary mapping to generate a second decoded word in response to each of the code words whose complement is an encoded version of a data word of the second data word subset;
(c) while performing step (a), applying an inverse of the primary mapping to each of the code words to generate a third decoded word, and generating the complement of the third decoded word;
(d) selecting the first decoded word as a decoded version of said each of the code words if the table lookup circuitry generates the first decoded word in response to said each of the code words, selecting the second decoded word as a decoded version of said each of the code words if the table lookup circuitry generates the second decoded word in response to said each of the code words, and otherwise selecting the third decoded word as a decoded version of said each of the code words if said each of the code words satisfies a second criterion or the complement of the third decoded word as a decoded version of said each of the code words if said each of the code words does not satisfy the second criterion.

1 more element

A method for decoding code words that have been encoded in accordance with an NB/(N+1)B block code that maps a set of 2N N-bit data words to a set of (N+1)-bit words, where the data words consist of a first data word subset and a second data word subset, the first data word subset includes more of the data words than does the second data word subset, and the block code specifies a primary mapping of each data word of the first data word subset to a first subset of the set of (N+1)bit words and a secondary mapping of each data word of the second data word subset to a second subset of the set of (N+1)bit words, said method including the steps of:

(a) monitoring accumulated disparity of a sequence of the code words;
(b) while performing step (a), in response to each of the code words, applying said each of the code words to table lookup circuitry if the accumulated disparity satisfies a first criterion to cause the table lookup circuitry to apply an inverse of the secondary mapping to generate a first decoded word in response to each of the code words that is an encoded version of a data word of the second data word subset, and applying the complement of said each of the code words to the table lookup circuitry if the accumulated disparity does not satisfy the first criterion to cause the table lookup circuitry to apply the inverse of the secondary mapping to generate a second decoded word in response to each of the code words whose complement is an encoded version of a data word of the second data word subset;
(c) while performing step (a), applying an inverse of the primary mapping to each of the code words to generate a third decoded word, and generating the complement of the third decoded word;
(d) selecting the first decoded word as a decoded version of said each of the code words if the table lookup circuitry generates the first decoded word in response to said each of the code words, selecting the second decoded word as a decoded version of said each of the code words if the table lookup circuitry generates the second decoded word in response to said each of the code words, and otherwise selecting the third decoded word as a decoded version of said each of the code words if said each of the code words satisfies a second criterion or the complement of the third decoded word as a decoded version of said each of the code words if said each of the code words does not satisfy the second criterion.

1 more element

A circuit for encoding a sequence of N-bit input words in accordance with an NB/(N+1)B block code to generate a code word sequence of (N+1)bit code words, wherein the code words belong to a positive codebook and a negative codebook, the positive codebook specifies a bijective mapping between a data word set of 2N N-bit data words and a set of (N+1)-bit code words, fp(x), where x is any data word of the data word set, the negative codebook specifies a bijective mapping between the data word set and a set of (N+1)-bit code words, fn(x), where each of the input words belongs to one of a first subset and a second subset of the data word set, and the first subset of the data word set includes more of the data words than does the second subset of the data word set, said circuit including:

logic circuitry coupled and configured to generate one of the code words in response to each of the input words that belongs to the first subset of the data word set;
additional circuitry coupled and configured to generate one of the code words in response to each of the input words that belongs to the second subset of the data word set;
and
a disparity calculation circuit coupled to receive each of the input words and configured to generate a disparity signal indicative of the accumulated disparity of the code words generated by the logic circuitry and the additional circuitry,
wherein the logic circuitry is coupled to receive the disparity signal, and configured to generate one of the code words, fp(x), in response to one of the input words that belongs to the first subset of the data word set when the disparity signal indicates that the accumulated disparity of the previously generated code words of the code word sequence satisfies a first criterion, and to generate one of the code words, fn(x), in response to one of the input words that belongs to the first subset of the data word set when the disparity signal indicates that the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion, and
wherein the additional circuitry is coupled to receive the disparity signal, and configured to generate one of the code words, fp(x), in response to one of the input words that belongs to second subset of the data word set when the disparity signal indicates that the accumulated disparity of the previously generated code words of the code word sequence satisfies the first criterion, and to generate one of the code words, fn(x), in response to one of the input words that belongs to the second subset of the data word set when the disparity signal indicates that the accumulated disparity of the previously generated code words of the code word sequence does not satisfy the first criterion.

3 more elements

A circuit for decoding a sequence of (N+1)-bit code words that have been encoded in accordance with an NB/(N+1)B block code that maps a set of 2N N-bit data words to a set of (N+1)-bit words, where the data words consist of a first data word subset and a second data word subset, the first data word subset includes more of the data words than does the second data word subset, and the block code specifies a secondary mapping of each data word of the second data word subset to a different one of the (N+1)-bit words, and a primary mapping of each data word of the first data word subset to a different one of the (N+1)-bit words, said circuit including:

a disparity calculation circuit coupled to receive each of the code words and configured to generate a disparity signal indicative of the accumulated disparity of said code words;
logic circuitry coupled to the disparity calculation circuit and configured to apply an inverse of the primary mapping to each of the code words to generate a first decoded word, and to generate the complement of the first decoded word in response to each of the code words that is an encoded version of a data word that belongs to the first subset of the data word set;
and
additional circuitry, including table lookup circuitry and code word selection circuitry, the code word selection circuitry being coupled to the disparity calculation circuit and configured to apply each of the code words to the table lookup circuitry if the disparity signal indicates that the accumulated disparity satisfies a first criterion to cause the table lookup circuitry to apply an inverse of the secondary mapping to generate a second decoded word in response to each of the code words that is an encoded version of a data word of the second data word subset, and to apply the complement of each of the code words to the table lookup circuitry if the disparity signal indicates that the accumulated disparity does not satisfy the first criterion to cause the table lookup circuitry to apply the inverse of the secondary mapping to generate a third decoded word in response to each of the code words whose complement is an encoded version of a data word of the second data word subset;
and
selection circuitry coupled to the logic circuitry and the additional circuitry and configured to select the second decoded word as a decoded version of said each of the code words if the table lookup circuitry generates the second decoded word in response to said each of the code words, to select the third decoded word as a decoded version of said each of the code words if the table lookup circuitry generates the third decoded word in response to said each of the code words, and otherwise to select the first decoded word as a decoded version of said each of the code words if said each of the code words satisfies a second criterion or the complement of the first decoded word as a decoded version of said each of the code words if said each of the code words does not satisfy the second criterion.

3 more elements

Method and apparatus for encoding or decoding data in accordance with an NB/(N+1)B block code, and method for determining such a block code

Life of this patent

Method and apparatus for encoding or decoding data in accordance with an NB/(N+1)B block code, and method for determining such a block code

Life of this patent

Abstract

Claims93