Adaptive track shape control during self servo-write
US7881004B2 · kind B2 · utility
17Cited by
26References
10Claims
0Family size
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Key dates
| Filing date | Sep 18, 2008 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Sep 18, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a method for implementing track shape control during a self servo-write process, an error in a targeted path for writing servo data onto a first track of a disk is detected. The error is correlated with a second error for a targeted path in a previously written track of the disk. A correction is generated for a feed-forward signal used to position a writing element which is used to write servo data for a subsequent track of the disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.