Restoring storage devices based on flash memories and related circuit, system, and method
US9146854B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 13, 2011 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Oct 13, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7211
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A restoring operation of a storage device based on a flash memory. In an embodiment, a storage device emulates a logical memory space (including a plurality of logical blocks each one having a plurality of logical sectors), which is mapped on a physical memory space of the flash memory (including a plurality of physical blocks each one having a plurality of physical sectors for storing different versions of the logical sectors). A method may detect a plurality of conflicting physical blocks for a corrupted logical block and determines a plurality of validity indexes. One or more of the conflicting physical blocks are selected according to the validity indexes. The selected conflicting physical blocks are then associated with the corrupted logical block. At the end, each one of the non-selected conflicting physical blocks is discarded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.