Endurance enhancement coding of compressible data in flash memories

摘要

Methods described in the present disclosure may be based on a direct transformation of original data to “shaped” data. In a particular example, a method comprises generating a first portion of output data by applying a mapping of input bit sequences to output bit sequences to a first portion of input data, updating the mapping of the input bit sequences to the output bit sequences based on the first portion of the input data to generate an updated mapping, reading a second portion of the input data, and generating a second portion of the output data by applying the updated mapping of the input bit sequences to the output bit sequences to the second portion of the input data.

主权项

1. A method of storing data, the method comprising:
in a data storage device including a memory, performing:
selecting, in accordance with an input string of multiple m-tuples of bits, a substitution transformation to apply to the input string, wherein m is an integer greater than 1;applying the selected substitution transformation to the input string to generate a transformed string of multiple output m-tuples of bits; andprogramming K storage elements of the memory to store the transformed string in the K storage elements, each of the K storage elements storing L bits, wherein L is not equal to m.