Data storage device and data maintenance method thereof
US10013210B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2016 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Dec 2, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7201
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a data storage device including a flash memory and a controller. The controller equally distributes the TLC-data blocks into three regions. In a first stage, the controller determines a first TLC-data block corresponding to the logic address of a prewrite data sector, defines the region that contains the first TLC-data block as a first region, and determines whether the first TLC-data block has valid data. When the first TLC-data block does not have valid data, the controller selects a second TLC-data block and a third TLC-data block from the regions other than the first region for writing the prewrite data sector, into the first TLC-data block, the second TLC-data block and the third TLC-data block by a SLC storage mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.