Invention Grant
- Patent Title: Adaptive estimation of memory cell read thresholds
- Patent Title (中): 存储单元读取阈值的自适应估计
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Application No.: US13734335Application Date: 2013-01-04
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Publication No.: US08547740B2Publication Date: 2013-10-01
- Inventor: Naftali Sommer , Ofir Shalvi , Uri Perlmutter , Oren Golov , Eyal Gurgi , Micha Anholt , Dotan Sokolov
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- Main IPC: G11C11/34
- IPC: G11C11/34 ; G11C16/04
Abstract:
A method for operating a memory (28) that includes a plurality of analog memory cells (32) includes storing data in the memory by writing first storage values to the cells. Second storage values are read from the cells, and a Cumulative Distribution Function (CDF) of the second storage values is estimated. The estimated CDF is processed so as to compute one or more thresholds. A memory access operation is performed on the cells using the one or more thresholds.
Public/Granted literature
- US20130121080A1 Adaptive Estimation of Memory Cell Read Thresholds Public/Granted day:2013-05-16
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