Disk drive employing velocity insensitive servo burst pattern
US8189286B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2010 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | May 21, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59655
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of servo sectors that define a plurality of servo tracks. The servo sectors comprise a plurality of servo bursts including a first servo burst, a second servo burst following the first servo burst and offset radially by approximately one half of a servo track from the first servo burst, a third servo burst following the second servo burst and offset radially by approximately one full servo track from the second servo burst, and a fourth servo burst following the third servo burst and offset radially by approximately one half of a servo track from the third servo burst. A PES is generated form the servo bursts that is substantially insensitive to a radial velocity of the head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.