Systems and methods for refreshing non-volatile memory
US8164967B2 · kind B2 · utility
8Cited by
2References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2010 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Sep 27, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/3431
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods are disclosed for managing a non-volatile memory (“NVM”), such as a flash memory. To prevent data errors due to leakage effects, the NVM may be refreshed. For example, a reserved portion of the NVM may be selected, and a predetermined pattern can be stored into the reserved portion. The reserved portion can then be monitored for storage deterioration over time. After determining that storage deterioration of the reserved portion has occurred, the NVM can be refreshed. In some embodiments, a controller can attempt to distinguish data errors due to leakage effects from data errors due to disturb issues.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.