Process for computing eccentric amount of disk upon rotating
US7046602B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2002 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | May 12, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/28
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A process for computing an eccentric amount of a disk upon rotating is provided. The process includes steps of starting a servo control system of a disk drive to rotate the disk at a specified angular velocity, measuring a track crossing speed of the servo control system at a focusing point on the disk, and computing the eccentric amount of the disk according to the specified angular velocity and the track crossing speed. A process for controlling rotation of a disk loaded in a disk drive is also provided. The process includes steps of realizing an eccentric amount of the disk, and rotating the disk at an operating speed corresponding to the eccentric amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.