Non-volatile memory and method with control data management
US8051257B2 · kind B2 · utility
8Cited by
62References
8Claims
0Family size
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Key dates
| Filing date | Aug 13, 2004 |
| Grant date | Nov 1, 2011 |
| Priority date | — |
| Expiry date | Feb 8, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2211/5641
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a nonvolatile memory with block management system, critical data such as control data for the block management system is maintained in duplicates. Various methods are described for robustly writing and reading two copies of critical data in multi-state memory. In another aspect of the invention, a preemptive garbage collection on memory block containing control data avoids an undesirable situation where a large number of such memory blocks need be garbage collected at the same time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.