Compact optical disc recording/reproducing system

Details Compact optical disc recording/reproducing system Compact optical disc recording/reproducing system

1991-12-10

1993-06-15

LaRoche, Eugene R.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369 4414, 369 4415, 369 4416, G11B 2110

Patent

active

052205436

ABSTRACT:
An optical recording/reproducing system for optically recording and reproducing an information signal on and from an optical disc (31) to be recorded with a plurality of track turns includes a light source (52); an optical head (45b) carrying an objective lens (62) for directing a light beam from the light source (52) to one of the track turns, and a tracking servo actuator for displacing the light beam within a movable range to perform both track feed and tracking servo operations for one of the track turns; the optical head (45b) being stationary with respect to the optical disc (31) while performing the track feed and tracking save operations by displacing the light beam in a radial direction of the optical disc; and a recording area on the optical disc having a radial distance equal to or smaller than the movable range of the tracking servo actuator.

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Literature I, 3.5 inch Standardization Committee Document Part 4 (SWG 1988.11.28).
Literature II, SPIE vol. 329 (1982) "Tracking Techniques in Pregrooved Optical Disk Technology".
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