08000135 is referenced by 52 patents and cites 454 patents.

A method for data storage includes storing data in a group of analog memory cells by writing into the memory cells in the group respective storage values, which program each of the analog memory cells to a respective programming state selected from a predefined set of programming states. The programming states include at least first and second programming states, which are applied respectively to first and second subsets of the memory cells, whereby the storage values held in the memory cells in the first and second subsets are distributed in accordance with respective first and second distributions. Respective first and second medians of the first and second distributions are estimated, and a read threshold is calculated based on the first and second medians. The data is retrieved from the analog memory cells in the group by reading the storage values using the calculated read threshold.

Title
Estimation of memory cell read thresholds by sampling inside programming level distribution intervals
Application Number
12/558528
Publication Number
8000135 (B1)
Application Date
September 13, 2009
Publication Date
August 16, 2011
Inventor
Micha Anholt
Tel Aviv
IL
Oren Golov
Hod Hasharon
IL
Eyal Gurgi
Petach Tikva
IL
Shai Winter
Giva'ataim
IL
Uri Perlmutter
Ra'anana
IL
Agent
D Kligler I P Services
Assignee
Anobit Technologies
IL
IPC
G11C 16/04
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