Optical information processing apparatus

Details Optical information processing apparatus Optical information processing apparatus

1987-07-08

1989-02-21

Sikes, William L.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369109, 369275, G11B 700

Patent

active

048072109

ABSTRACT:
An optical information processing apparatus uses an optical disk having correction marks such as mirror surfaces or wobbled pits intermittently arranged along a guide track. In a reproduce mode, tracking control is effected by correcting a tracking signal by a tracking offset component detected by the correction marks. In a record or erase mode, the track offset correction is deactivated and record or erase operation is controlled in accordance with an output level of the detected track offset component so that incomplete eraser of recorded data is prevented.

REFERENCES:
patent: 4583212 (1986-04-01), Koide et al.
patent: 4663751 (1987-05-01), Kaku et al.
patent: 4727531 (1988-02-01), Ito et al.
patent: 4748609 (1988-05-01), Yonezawa et al.

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