Process for computing eccentric amount of disk upon rotating

Details Process for computing eccentric amount of disk upon rotating Process for computing eccentric amount of disk upon rotating

2006-05-16

2006-05-16

Patel, Gautam R. (Department: 2656)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053280, C369S053300

Reexamination Certificate

active

07046602

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.

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patent: 5844866 (1998-12-01), Fujimoto et al.
patent: 6351440 (2002-02-01), Fukuda et al.
patent: 2001/0019525 (2001-09-01), Chan
patent: 2003/0123354 (2003-07-01), Takahashi

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