Disk drive comprising gray code implemented with servo bursts
US7710676B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2008 |
| Grant date | May 4, 2010 |
| Priority date | — |
| Expiry date | Mar 27, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59688
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is disclosed comprising a disk including a plurality of servo tracks defined by a plurality of servo sectors, wherein each servo sector comprises a plurality of servo bursts. The disk drive further comprises a head actuated over the disk. A servo sector is read to generate a read signal which is processed to demodulate the servo bursts into a position error signal (PES) representing an offset of the head from a target radial location on the disk. The read signal is also processed to decode the servo bursts into a Gray codeword representing at least part of a servo track address, wherein the servo track address represents a servo track the head is over.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.