Optical signal recording and reproducing system

Details Optical signal recording and reproducing system Optical signal recording and reproducing system

1979-10-22

1982-06-08

Cardillo, Jr., Raymond F.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369109, 369110, G11B 700, G11B 712

Patent

active

043342990

ABSTRACT:
A recording optical system forms a recording spot to record a pitted signal on a record surface. A first reproducing optical system forms a reproducing spot fixed with respect to the recording spot on the record surface for monitoring purposes, and a second reproducing optical system with the greater part of the optical components thereof common to the first reproducing optical system and also including a rotatable reflecting mirror for forming a tracking spot on the record surface. The tracking spot is movable on the recorded signal by the rotation of the mirror in response to the light reflected from the record surface for causing the tracking spot to accurately track the pitted signal on the record surface.

REFERENCES:
patent: 3474457 (1969-10-01), Becker
patent: 3510658 (1970-05-01), Rabedeau
patent: 3651281 (1972-03-01), Becker
patent: 4225873 (1980-09-01), Winslow

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