09397701 is referenced by 4 patents and cites 148 patents.

A nonvolatile memory storage controller is provided for delivering log likelihood ratios (LLRs) to a low-density parity check (LDPC) decoder for use in the decoding of an LDPC encoded codeword. The controller includes read circuitry for reading an LDPC encoded codeword stored in a nonvolatile memory storage module using a plurality of soft-decision reference voltages to provide a plurality of soft-decision bits representative of the codeword. The controller further includes a plurality of lifetime specific LLR look-up tables representative of the lifetime threshold voltage distribution of the memory storage module, wherein each of the plurality of lifetime specific LLR look-up tables comprises a plurality of LLRs representative of a specific point in the lifetime of the memory storage module for each of the plurality of soft-decision bits. The controller provides the LLRs from the appropriate LLR look-up table to an LDPC decoder for the subsequent decoding of the codeword.

Title
System and method for lifetime specific LDPC decoding
Application Number
13/792831
Publication Number
9397701 (B1)
Application Date
March 11, 2013
Publication Date
July 19, 2016
Inventor
Christopher I W Norrie
San Jose
CA, US
Alessia Marelli
Dalmine
IT
Peter Z Onufryk
Flanders
NJ, US
Rino Micheloni
Turate
IT
Agent
Glass & Associates
Mark Peloquin
Kenneth Glass
Assignee
Microsemi Storage Solutions
CA, US
IPC
H03M 13/13
G06F 11/10
H03M 13/11
H03M 13/37
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