Method and apparatus for read-after-write verification with error tolerance
US6512644B1 · kind B1 · utility
37Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2000 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | May 23, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1879
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for Read-After-Write (RAW) verification with error tolerance is disclosed whereby upon read back of data from a medium, the actual read data can be compared to the actual write data, and the number of miscompares between the two can be counted. The severity of the number of miscompares can be determined depending on the Error Control Code (ECC) system used. If the error is correctable by the ECC system, the block need not be re-written to the medium. The invention provides the ability to increase medium capacity and throughput over previous implementations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.