Seek circuit for optical disc

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

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369 4478, 360 7814, G11B 700

Patent

active

054714443

ABSTRACT:
In a circuit and method for moving an optical pickup to a set target track on an optical disc, namely performing a track seek operation wherein, the address of a current track is detected with address information obtained from a playback signal from the optical disc, a reference value which is generated that chronologically changes while the optical pickup is being moved from the address of the current track to the address of the target track, an actuator for moving the optical pickup in the radial direction of the optical disc being driven so as to perform the seek operation at a high speed without requiring a speed sensor for sensing the speed of the moving optical pickup.

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