Storage device employing a flash memory
US6567334B2 · kind B2 · utility
23Cited by
45References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2002 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Jan 16, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/2022
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.