Device for rapidly moving an optical pick-up device in an optica

Details Device for rapidly moving an optical pick-up device in an optica Device for rapidly moving an optical pick-up device in an optica

1983-01-17

1985-01-22

Stephan, Steven L.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 41, 369 98, 369215, G11B 700, G11B 1700, G11B 2110

Patent

active

044956088

ABSTRACT:
A device for rapidly moving an optical pick-up device in an optical reproducing apparatus to a desired position on a record disc having a plurality of record tracks with an information signal recorded therein, includes a tracking error signal generating circuit for producing a tracking error signal corresponding to deviation of the pick-up device from the center of each record track; a drive device for moving the pick-up device in a direction transverse to the record tracks; and a track jump signal forming circuit for producing a track jump signal comprised of a drive signal followed by a brake signal, in response to the tracking error signal, the drive signal having a duration corresponding to the number of tracks traversed by the pick-up device and the brake signal having a duration corresponding to the speed of movement of the optical pick-up device in traversing the tracks, and for supplying the track jump signal to the drive device to control the latter to rapidly move the optical pick-up device in a direction transverse to the record tracks to the desired position.

REFERENCES:
patent: 4106058 (1978-08-01), Romeas et al.
patent: 4138663 (1979-02-01), Lehureau et al.
patent: 4330879 (1982-05-01), Wine

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