Adjustable read channel equalization for error processing in a recordable media drive
US5533031A · kind A · utility
19Cited by
18References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1994 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Jun 24, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/183
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a recordable media drive, error processing is implemented in an adjustable read channel equalizer in which gain and bandwidth values can be selectively adjusted. In a write/verify procedure, the gain value is reduced, while the bandwidth is increased, thereby stressing the read channel during verification of written sectors in order to force the failure of marginal sectors. In an error recovery procedure, when a sector error is encountered, the gain value of the adjustable equalizer is initially increased and a sequence of read retries of the failed sector is initiated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.