Adaptive estimation of memory cell read thresholds
US8369141B2 · kind B2 · utility
68Cited by
361References
47Claims
0Family size
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Key dates
| Filing date | Mar 11, 2008 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Dec 16, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2211/5634
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.