Method of detecting light spot control signal

Details Method of detecting light spot control signal Method of detecting light spot control signal

1982-07-22

1986-01-07

Richardson, Robert L.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 45, 250201, G11B 700

Patent

active

045637601

ABSTRACT:
A method of detecting a light spot control signal is disclosed in which, when information is reproduced from an optical disk for optically recording information, a signal level obtained at a high-reflectivity portion of the optical disk is taken out of a signal reproduced from the optical disk, and is used as a control signal, which controls a light spot so that it tracks information stored in the optical disk.

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patent: 4165519 (1979-08-01), Goto
patent: 4223347 (1980-09-01), Bouwhuis et al.
patent: 4232337 (1980-11-01), Winslow
patent: 4243850 (1981-01-01), Edwards
patent: 4359635 (1982-11-01), Gross

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