07975192 is referenced by 103 patents and cites 432 patents.

A method for operating a memory (28) includes storing data, which is encoded with an Error Correction Code (ECC), in analog memory cells (32) of the memory by writing respective analog input values selected from a set of nominal values to the analog memory cells. The stored data is read by performing multiple read operations that compare analog output values of the analog memory cells to different, respective read thresholds so as to produce multiple comparison results for each of the analog memory cells. At least two of the read thresholds are positioned between a pair of the nominal values that are adjacent to one another in the set of the nominal values. Soft metrics are computed responsively to the multiple comparison results. The ECC is decoded using the soft metrics, so as to extract the data stored in the analog memory cells.

Title
Reading memory cells using multiple thresholds
Application Number
11/995814
Publication Number
7975192 (B2)
Application Date
October 30, 2007
Publication Date
July 5, 2011
Inventor
Dotan Sokolov
Ra'anana
IL
Ofir Shalvi
Ra'anana
IL
Naftali Sommer
Rishon Le-Zion
IL
Agent
Fish & Richardson P C
Assignee
Anobit Technologies
IL
IPC
G11C 29/50
G11C 29/42
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