US 6,927,709 B2 · Transmission and reception interface and method of data transmission

Abstract

An N-bit word is produced from an M-bit code received on an M-bit line, M being larger than N, the M-bit code comprising at least an M-bit code word and a previous M-bit code word, the M-bit code word comprising different levels at at least two bit positions, and the previous M-bit code word comprising levels opposite to the different levels at the corresponding bit positions, by comparing the levels at the two bit positions of the M-bit code word to obtain a first value, comparing the levels at the two corresponding bit positions of the previous M-bit code word to obtain a second value, detecting that the first value is opposite to the second value, and decoding the M-bit code word responsive to detecting that the first value is opposite to the second value. An advantage of the present invention is that all the lines taking part in the transmission have the same electrical characteristics, the same meaning and the same kind of loads.

Claims20

Dependent claims

A method of producing an N-bit word from an M-bit code received on an M-bit line, M being larger than N, said M-bit code comprising at least an M-bit code word having M-bit positions and a previous M-bit code word having M-bit positions, each of the M-bit positions of the M-bit code word corresponding to one of the M-bit positions of the previous M-bit code word, said M-bit code word comprising different levels at least at two bit positions, and said previous M-bit code word comprising levels opposite to said different levels at the corresponding bit positions, the method comprising:

comparing said levels at the two bit positions of said M-bit code word to obtain a first value;
comparing said levels at the two corresponding bit positions of said previous M-bit code word to obtain a second value;
detecting that said first value is opposite to said second value;
and
decoding said M-bit code word responsive to detecting that said first value is opposite to said second value.

2 more elements

A reception interface for generating an N-bit word from an M-bit code received on an M-bit line, M being larger than N, said M-bit code comprising at least an M code word having M-bit positions and a previous M-bit code word having M-bit positions, each of the M-bit positions of the M-bit code word corresponding to one of the M-bit positions of the previous M-bit code word, said M-bit code word having different levels at least at two bit positions, and said previous M-bit code word, at the corresponding bit positions, having levels opposite to said different levels, the reception interface comprising:

a comparator for comparing said levels at the two bit positions of said M-bit code word to obtain a first value and for comparing said levels at the two corresponding bit positions of said previous M-bit code word to obtain a second value;
a detector for detecting that said first value is opposite to said second value;
and
a decoder for decoding said M-bit code word responsive to detecting that said first value is opposite to said second value.

1 more element

Dependencies are inferred from the claim text.

Transmission and reception interface and method of data transmission

Life of this patent

Transmission and reception interface and method of data transmission

Life of this patent

Abstract

Claims20