Apparatus and method for positioning an optical head over a disk

Details Apparatus and method for positioning an optical head over a disk Apparatus and method for positioning an optical head over a disk

1999-05-17

2000-10-03

Dinh, Tan

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

G11B 1722

Patent

active

061282561

ABSTRACT:
An apparatus and method are provided for locating a desired track on a disk shaped recording medium. The disk has a first pre-group and a second pre-group. At least one of the pre-groups has encoded address information shared by at least one track on the inner side of the pre-group, and shared by at least one track on an outer side of the pre-group. A desired track is located based on changes in address information detected during or after a track jump.

REFERENCES:
patent: 5247498 (1993-09-01), Takekoshi et al.
patent: 5396477 (1995-03-01), Matsumoto et al.
patent: 5532988 (1996-07-01), Yokogama
patent: 5872750 (1999-02-01), Satoh
patent: 5881032 (1999-03-01), Ito et al.

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