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

2000-10-10

Dinh, Tan

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

3692754, G11B 1722

Patent

active

06130865&

ABSTRACT:
An apparatus and method are provided for moving an optical head to a desired track on a disk shaped recording medium having a pair of spiral tracks. A common address is recorded on the pair of spiral tracks. The addresses of the tracks before and after the access process are compared. Based on this comparison, a judgment is made as to whether the optical head has landed on a spiral track having a common address or a track having another address after the access process.

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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