Optical information processing apparatus for stopping tracking a

Details Optical information processing apparatus for stopping tracking a Optical information processing apparatus for stopping tracking a

1989-02-22

1991-03-19

Richardson, Robert L.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4435, G11B 700

Patent

active

050016954

ABSTRACT:
An apparatus for recording and/or reproducing information by scanning a light beam on a track of an optical recording medium, while the track is tracking-controlled and/or focusing-controlled is disclosed. The track being scanned has a preformat signal partially recorded in a longitudinal area thereof, and the tracking control and/or focusing control are stopped while the light beam passes through the area of the track in which the preformat signal is recorded.

REFERENCES:
patent: 4503324 (1985-03-01), Yokota
patent: 4661942 (1987-04-01), Yoshimoto et al.
patent: 4761775 (1988-08-01), Murakami
Patent Abstracts of Japan, vol. 7, No. 15, 1/1983, No. 57-169932.
Patent Abstracts of Japan, vol. 8, No. 275, 12/1984, No. 59-142757.
Patent Abstracts of Japan, vol. 9, No. 227, 9/1985, No. 60-85444.
Patent Abstracts of Japan, vol. 10, No. 160, 6/1986, No. 61-11941.

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