Method and apparatus for defect management in a non-volatile memory device
US9766814B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2015 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Aug 10, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7208
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided are a method and apparatus for remapping logical to physical addresses for a non-volatile memory having dies. Bands extend through the dies and planes in the dies extending through the bands define addressable blocks. A first remapping of a logical-to-physical mapping is performed by remapping logical addresses of blocks in a first end of the bands that map to defective physical blocks to map to good physical blocks at a second end of the bands. After performing the first remapping, a second remapping of the logical-to-physical mapping is performed by remapping logical addresses in the second end of bands that map to defective blocks to map to good physical blocks in the first end of bands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.