High-speed searching apparatus for CDP

Details High-speed searching apparatus for CDP High-speed searching apparatus for CDP

1988-11-29

1990-12-11

McElheny, Jr., Donald

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

G11B 700

Patent

active

049775391

ABSTRACT:
A high-speed searching apparatus for a CDP includes an encoder mounted to a rotary shaft of a slide motor for controlling a searching operation of an optical pickup by using a moving distance which is measured by the encoder. The encoder includes a circular rotary plate having slits and a photo sensor having a light emitter and a light receiver. By using the encoder, the high-speed searching can be quickly executed without any influence from RF signal.

REFERENCES:
patent: 4135086 (1979-01-01), Baba
patent: 4695989 (1987-09-01), Kimoto
patent: 4764914 (1988-08-01), Estes et al.
patent: 4809251 (1989-02-01), Collomby et al.

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