Memory system and method for bad block management
US10672497B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2018 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Jul 14, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method is provided for controlling a storage system, which can include a plurality of memory cells arranged in blocks and a memory controller coupled to the plurality of memory cells for controlling data write and read in the plurality of memory cells. The method includes identifying a block as a good block, if a count of bad pages in the block is zero, identifying the block as a degraded block if the count of bad pages is below a threshold number, and identifying the block as a bad block if the count of bad pages is above or equal to the threshold number. The method includes using good blocks and degraded blocks for read and program operations, and not using the bad blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.