Method and apparatus for detecting, logging and recovering from errors caused by multiple thermal asperities in a sector
US6421193B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1999 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Jan 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for compensating for multiple thermal asperity events in a sector. The present invention provides for the detection, recording and recovery from errors caused by multiple thermal asperities occurring in a single sector. The method includes detecting thermal asperity events in a sector, setting a flag indicating each occurrence of a thermal asperity event in the sector, maintaining a count of the detected thermal asperity events in the sector and recording a byte location for each of the detected thermal asperity events in the sector. The method further includes performing a data recovery procedure in response to the detected thermal asperity events. The data recovery procedure is performed using the flag settings and a location corresponding to the detected thermal asperity events. The data recovery procedure is performed using the count of the detected thermal asperity events. The setting of a flag includes setting a bit in a register. The setting of a bit indicates a start byte location for a thermal asperity event. The maintaining a count of the detected thermal asperity events in the sector includes the setting of a bit in the register for each detected t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.