Scaling factors for hard decision reads of codewords distributed across die

摘要

Embodiments include methods, apparatuses, and instructions for encoding a codeword of data as codeword portions stored across multiple die in a non-volatile memory. Embodiments further include a decoder which may be configured to decode the portions of the codeword using hard decision reads. The decoder may then be configured to estimate the quality of each die, and apply a scaling factor to the decoded codeword portions such that confidence or reliability information can be determined for the codeword.

主权项

1. An apparatus comprising:
an encoder configured to generate a codeword for a data for storing the data in a non-volatile memory by storing the codeword in the non-volatile memory, wherein the codeword includes the data and a plurality of check bits, and the non-volatile memory includes a plurality of die, and wherein storing the codeword includes respectively storing a plurality of portions of the codeword in the plurality of die; and
a decoder configured to recover the data from a read back of the codeword, wherein the read back of the codeword includes respective hard decision reads of the different portions of the codeword, and wherein recovery of the data includes application of differential scaling factors to the hard decision reads based at least in part on respective estimated raw bit error rates (RBERs) of the plurality of die.