Method and apparatus for compensating track position due to written-in runout error in a disc drive
US5825578A · kind A · utility
36Cited by
3References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1996 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Jun 11, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/106
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disc drive device where data and servo position information is stored in data segments on concentric tracks on the disc surface. The servo position information indicates the track centerline for each data segment. The offset of the servo position information from an ideal track centerline for each track is measured and stored into memory. The read/write head, which accesses data on the disc tracks, is positioned over the track centerline based on the offset for each data segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.