Scrub techniques for use with dynamic read
US8687421B2 · kind B2 · utility
38Cited by
130References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2012 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | May 10, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2211/5634
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The decision on whether to refresh or retire a memory block is based on the set of dynamic read values being used. In a memory system using a table of dynamic read values, the table is configured to include how to handle read error (retire, refresh) in addition to the read parameters for the different dynamic read cases. In a refinement, the read case number can used to prioritize blocks selected for refresh or retire. In cases where the read scrub is to be made more precise, multiple dynamic read cases can be applied. Further, which cases are applied can be intelligently selected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.