Flash memory devices, data randomizing methods of the same, memory systems including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsJung Soo Chung, Yong June Kim, Hong Rak Son, Jun Jin Kong
Life of this patent
Estimating the term…
Abstract
Disclosed is a flash memory device which includes a memory cell array configured to store data, a randomizer configured to generate a random sequence, to interleave the random sequence using at least one of memory parameters associated with data to be programmed in the memory cell array, and a control logic circuit configured to provide the memory parameters to the randomizer and to control the randomizer.
Claims18
A flash memory device comprising:
- a memory cell array configured to store data;
- a randomizer configured to generate a random sequence and interleave the random sequence using at least one of memory parameters associated with data to be programmed in the memory cell array, the randomizer includes,
- a sequence generator configured to generate the random sequence,
- an information generator configured to generate start point information based on the at least one of the memory parameters, the start point information identifying first coordinates of a matrix, and
- an interleaver configured to interleave the random sequence by writing bits of the random sequence to the matrix in a first direction starting at second coordinates of the matrix and reading the written bits in the matrix in a second direction based on the start point information, the first and second coordinates being different and of the same matrix;
- and
- a control logic circuit configured to provide the memory parameters to the randomizer and to control the randomizer.
A data randomizing method of a flash memory device which includes a memory cell array and a randomizer, the data randomizing method comprising:
- generating a random sequence;
- interleaving the random sequence, the interleaving including,
- generating start point information, the start point information identifying first coordinates of a matrix,
- writing bits of the random sequence in the matrix in a first direction starting at second coordinates of the matrix, and
- reading the written bits of the matrix in a second direction based on the start point information, the first and second coordinates being different and of the same matrix;
- and
- randomizing data to be programmed in the memory cell array by merging the interleaved sequence and the data to be programmed.
A memory device comprising:
- a plurality of memory cells configured to store data;
- an interleaver configured to interleave a random sequence based on start point information, the interleaving including writing the random sequence to a matrix in a first direction starting at first coordinates of the matrix and reading the random sequence in a second direction;
- and
- a randomizer configured to read the random sequence from the matrix based on the start point info information, the start point information identifying second coordinates of the matrix to start reading the random sequence from the matrix, the first and second coordinates being different and of the same matrix, the randomizer configured to randomize data to be stored in the plurality of memory cells based on the read random sequence.
Dependencies are inferred from the claim text.