Error recovery in unit using GMR sensor
US6490115B1 · kind B1 · utility
10Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1998 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Dec 22, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for recovering from operation errors arising in an information recording and reproducing unit using a head with a GMR sensor is described. The read and write operations of the unit comprise executing a first error recovery procedure for recovering the operation error, executing a first GMR evaluation procedure for evaluating the performance of the GMR sensor when the operation error cannot be recovered by the first error recovery procedure, and applying a resetting pulse to the GMR sensor in accordance with the first GMR evaluation procedure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.