09450610 is referenced by 6 patents and cites 183 patents.

A nonvolatile memory controller includes memory storage configured to store a two-index look-up table that includes a Log-Likelihood Ratio (LLR), hard-and-soft-decision bits associate with the LLR and a neighboring cell read pattern associated with the LLR. Read circuitry is configured to perform a plurality of reads of a cell of a nonvolatile memory storage module at different read voltage levels to generate target cell hard-and-soft-decision bits and configured to read neighboring cells to generate neighboring cell reads. Neighboring cell processing circuitry combines the neighboring cell reads to generate a neighboring cell read pattern. Look-up circuitry accesses the two-index look-up table using the target cell hard-and-soft-decision bits and the neighboring cell read pattern to identify the corresponding LLR for use in Low-Density Parity Check (LDPC) decoding of a codeword stored in the nonvolatile memory storage module.

Title
High quality log likelihood ratios determined using two-index look-up table
Application Number
14/557214
Publication Number
9450610 (B1)
Application Date
December 1, 2014
Publication Date
September 20, 2016
Inventor
Christopher I W Norrie
San Jose
CA, US
Alessia Marelli
Dalmine
IT
Rino Micheloni
Turate
IT
Agent
Kenneth Glass
Glass and Associates
Assignee
Microsemi Storage Solutions
CA, US
IPC
G06F 11/10
H03M 13/11
H03M 13/00
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