Optical disk drive apparatus and a seek method spiral track

Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium

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369 4428, 369 4411, 360 7807, G11B 700

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active

052474984

ABSTRACT:
The invention calculates the number of track crossing signals to be counted until a target position is reached without an actual seek operation, thus making it possible to complete a seek operation in a short time and without the need of the additional seek operation disclosed in the related art. A memory means is provided for storing the relation between the number of tracks (Delta t) from a current position to a target position and an indicator of the movement of said optical head toward said target position. A control means is provided for calculating the number of track crossing signals to be counted during a seek operation based on said stored relation when the target position is given, and for generating a control signal causing said optical head to seek based on the number of the calculated track crossing signals.

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patent: 5063549 (1991-11-01), Yamamuro
patent: 5088075 (1992-02-01), Yokota
patent: 5191566 (1993-03-01), Yamaguchi et al.

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