Non-volatile memory and method with control data management
US8239643B2 · kind B2 · utility
2Cited by
70References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 23, 2011 |
| Grant date | Aug 7, 2012 |
| Priority date | — |
| Expiry date | Sep 23, 2031 |
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.