Record/playback head positioning device for optical disc apparat

Details Record/playback head positioning device for optical disc apparat Record/playback head positioning device for optical disc apparat

1983-08-11

1986-04-15

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Having power driven transducer assembly

360105, 360106, 369221, G11B 336

Patent

active

045832129

ABSTRACT:
An optical disc recording and playback apparatus has a record/playback head adapted to write data into and read them out of information tracks formed on a rotatable optical disc. A carriage carrying the head therewith is driven by a linear motor in the radial direction of the disc perpendicular to the tracks, and then stopped and held at a desired track position. Thereafter, a tracking control is performed by allowing the head to move in the radial direction within a predetermined range.

REFERENCES:
patent: 3940149 (1976-02-01), Nagamura
patent: 4037252 (1977-07-01), Janssen
patent: 4046386 (1977-09-01), Gosling et al.
patent: 4260162 (1981-04-01), Morii et al.
patent: 4323997 (1982-04-01), Kuribayashi et al.
patent: 4382293 (1983-05-01), Tajima et al.
patent: 4453243 (1984-06-01), Tanaka et al.

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