Method and system for head position control in embedded disk drive controllers
US7139150B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2004 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Dec 10, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59605
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A track follow controller (“TFC”) in an embedded disk controller is provided. The TFC includes, a position error calculator that determines a linear position of a head based on burst format and determines a position error based on the linear position and a target position; and a position error output compensator that receives a position error signal from the position error calculator and filters the position error signal. The burst format includes at least a first burst pair format that includes x bursts and a second burst pair format that includes y bursts, where x is unequal to y. The position error calculator includes a burst selector that can select a burst pair; a linear position calculator that calculates head linear position based on burst pair format; and an error calculator that determines the position error based on the linear position and target position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.