Disk storage unit positioning control for applying DC offsets to a tracking error
US5760991A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1994 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Oct 28, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/08529
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk storage unit according to the present invention comprises a disk for storing data, a head for at least reading data stored on the disk, a controller for controlling a seek operation in which the head moves from a current track to a target track and a tracking operation in which the head tracks the target track after reaching the target track, based on a tracking error signal, and a device for adding a dc offset to the tracking error signal so that head drive power having a direction opposite that of the seek operation and corresponding to the velocity of the head in the seek operation is generated after the head has reached the target track and the seek operation has been switched to the tracking operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.