Disk drive adjusting estimated reader/writer offset to achieve target burst crossing signal amplitude when propagating servo sectors
US7602575B1 · kind B1 · utility
117Cited by
51References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 2008 |
| Grant date | Oct 13, 2009 |
| Priority date | — |
| Expiry date | May 14, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59666
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is disclosed comprising control circuitry for self servo writing a disk. An estimated reader/writer offset is initialized, servo bursts in a first servo track are read, the head is moved radially using the estimated reader/writer offset, and propagated servo bursts are written to a target servo track. The propagated servo bursts are read from the target servo track to generate a read signal, the read signal is processed to generate a burst crossing signal (BCS), and the estimated reader/writer offset is adjusted in response to the BCS.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.