Optical disk apparatus

Details Optical disk apparatus Optical disk apparatus

1984-06-28

1987-10-20

Faber, Alan

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

358907, 369 44, 369 33, 369 43, G11B 2710, G11B 7095

Patent

active

047018976

ABSTRACT:
An optical disk apparatus has an optical head for photoelectrically detecting track data and a track jump data component corresponding to an accidental track jump on an optical disk. A circuit is provided wherein the track jump data component is detected from the data detected by the optical head so as to determine the number of jumped tracks and a jump direction therefrom. A tracking section performs tracking control of the optical head in accordance with a signal corresponding to jump direction and the number of the jumped tracks and returns a laser beam to the track at which the laser beam was directed before the track jump.

REFERENCES:
patent: 4375091 (1983-02-01), Dakin
patent: 4432083 (1984-02-01), Hsieh
patent: 4484319 (1984-11-01), Koishi
patent: 4536863 (1985-08-01), Giddings
patent: 4572965 (1986-02-01), Yamamura
patent: 4623993 (1986-11-01), Schlosser

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