Merging data from single-level cell block to multiple-level cell block based on sudden power off event and valid page count in single-level cell block
US10719254B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2018 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | Jul 19, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/064
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data storage device includes a memory device and a controller. The memory device includes multiple memory blocks. The memory blocks include single-level cell blocks and multiple-level cell blocks. The controller is coupled to the memory device. When the controller executes a predetermined procedure to write data stored in the single-level cell blocks into the multiple-level cell blocks, the controller is configured to determine whether a valid page count corresponding to each single-level cell block is greater than a threshold, and when the valid page count corresponding to more than one single-level cell block is greater than the threshold, the controller is configured to execute a first merge procedure to directly write the data stored in the single-level cell blocks with the valid page count greater than the threshold into one or more of the multiple-level cell blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.