Erased block reverification method for solid state storage device
US10403379B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 9, 2018 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Jul 9, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2211/5644
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An erased block reverification method for a solid state storage device is provided. Firstly, an erase command corresponding to a selected block is issued to an array control circuit. When an erase pass message is received, a judging step is performed to judge whether a setting condition of the selected block is satisfied. If the setting condition of the selected block is satisfied, the selected block is recorded as a good block. If the setting condition of the selected block is not satisfied, a selected block reverification process is performed. During the selected block reverification process, a data of the selected block is read and the selected block is recorded as the good block or a defective block according to a number of memory cells of the selected block in a non-erase state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.