Servo control apparatus, servo control method, optical disc...

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system

Reexamination Certificate

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Details

C369S044340, C369S047360

Reexamination Certificate

active

07660211

ABSTRACT:
A servo control apparatus includes: a drive section that applies a thrust to move a driven object; a storage section that stores a control circuit output initial value; an approaching control section that moves the driven object toward a target position; an error signal detection section that detects an error signal varying according to a difference between the position of the driven object and the target position; a start position calculation section that calculates a start position of a servo control process; an arrival detection section that detects whether the driven object reaches the start position; a control circuit initial value calculation section that calculates a control circuit initial value of a control system and supplies it to a control circuit of the control system; and a servo control starting section that starts the servo control process when detecting that the driven object has reached the start position.

REFERENCES:
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patent: 6377523 (2002-04-01), Yanagi
patent: 6584048 (2003-06-01), Tateishi et al.
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patent: 2002-140115 (2002-05-01), None
patent: 2003-157633 (2003-05-01), None
patent: 2003-259675 (2003-09-01), None

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