Magnetic media defect detection apparatus and method
US6628465B2 · kind B2 · utility
10Cited by
15References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2001 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Jan 4, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus for detecting defects in a magnetic disk includes a read head including multiple read elements for reading multiple tracks of the disk. Read signals produced by the read elements are received by certifier circuit portions for determining whether any of the read signals includes an indication of a defect in the disk. A monitoring circuit monitors the read elements to detect a malfunctioning read element. The read head position is controlled so that a malfunctioning read element is not used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.