Flash storage device with data correction function
US7921339B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2008 |
| Grant date | Apr 5, 2011 |
| Priority date | — |
| Expiry date | Jun 20, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2029/0411
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A flash controller performs a data correction function while executing a copy back procedure for a flash memory, and the flash memory includes at least one memory unit and a page buffer. The flash controller contains: a transmission buffer, an error correction unit, a correction information register, and a microprocessor. The microprocessor reads out a data from, the page buffer and stores the data into the transmission buffer after producing a read instruction of page copy to the flash memory. The microprocessor controls the error correction unit to check and correct the data in the transmission buffer and calculate a check result. The microprocessor produces a different program command to record the corrected data into the memory unit according to the data error quantity of the check result. Thereby, the present invention can achieve the purpose of improving the flash controller in reliability and access efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.