Apparatus for recording and reproducing information on and from

Details Apparatus for recording and reproducing information on and from Apparatus for recording and reproducing information on and from

1991-05-29

1992-09-01

Richardson, Robert L.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

G11B 700

Patent

active

051446081

ABSTRACT:
Disclosed is an information recording-reproducing apparatus including a light source for emitting a light beam, a lens device for imaging the light beam from the light source on an optical information recording medium, a photodetector for receiving light from the recording medium and for outputting a plurality of types of signals, a detector for detecting a mark indicative of a reference position on the recording medium on the basis of a corresponding signal from the photodetector and for outputting a signal, a device for initiating auto-tracking on the basis of the signal from the detector, a tracking actuator for moving the lens device, and a device for controlling the tracking actuator to start recording and reproduction of information from a predetermined position on the recording medium after the auto-tracking has been initiated.

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patent: 4769802 (1988-09-01), Tatsuguchi
patent: 4811321 (1989-03-01), Enari et al.
patent: 4884259 (1989-11-01), Horikawa et al.
patent: 4910725 (1990-03-01), Drexler et al.
patent: 4989194 (1991-01-01), Aoi

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