Method of data storage in non-volatile memory

摘要

A method of storing a set of metadata bits associated with each of multiple data words includes combining the set of metadata bits with each of the multiple data words to generate multiple extended data words. The method includes encoding each of the multiple extended data words to generate multiple codewords and puncturing each of the multiple codewords to generate multiple punctured codewords, where in each of the punctured codewords the set of metadata bits is removed. The method includes storing the multiple punctured codewords, transforming the set of metadata bits to generate a set of transformed metadata bits, and storing the set of transformed metadata bits.

主权项

1. A method of storing multiple data words, the method comprising:
in a data storage device that includes a non-volatile memory, performing:
combining metadata bits comprising a scrambling seed with each data word of a plurality of data words to generate a plurality of extended data words, the plurality of extended data words including a first extended data word and a second extended data word;encoding each of the plurality of extended data words to generate a plurality of error correction code (ECC) codewords, wherein encoding the first extended data word generates first parity bits configured to enable error correction of the metadata bits in the first extended data word, and wherein encoding the second extended data word generates second parity bits configured to enable error correction of the metadata bits in the second extended data word;puncturing each of the plurality of ECC codewords to generate a plurality of punctured codewords, wherein in each of the punctured codewords the metadata bits are removed; and storing the plurality of punctured codewords and data that represents the metadata bits at a storage device.