Bad block identifying method for flash memory, storage system, and controller thereof
US8046645B2 · kind B2 · utility
43Cited by
7References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2008 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Oct 6, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A bad block identifying method for a flash memory, a storage system, and a controller thereof are provided. The bad block identifying method includes determining whether a programming error occurs in a block of the flash memory after the block is programmed and marking the block as a bad block when the programming error successively occurs in the block. Since the block is determined to be a bad block only when the programming error repeatedly occurs in the block, misjudgment of bad block in the flash memory can be avoided and accordingly the lifespan of the flash memory storage system can be prolonged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.