Information recording and reproducing apparatus with tracking co

Details Information recording and reproducing apparatus with tracking co Information recording and reproducing apparatus with tracking co

1982-11-23

1986-01-14

Cardillo, Jr., Raymond F.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 33, 369 41, 369 46, 369 32, G11B 708

Patent

active

045649294

ABSTRACT:
An information recording and reproducing apparatus wherein a light beam is applied onto an optical disk having pits previously formed in optical manner thereon. A tracking signal is detected from the light beam which has been modulated by the pits, and information is recorded by applying a record beam modulated by an information signal onto an area between one pit and the succeeding pit while tracking is effected by using the tracking signal.

REFERENCES:
patent: 3501586 (1970-03-01), Russell
patent: 3891794 (1975-06-01), Russell
patent: 3919697 (1975-11-01), Walker
patent: 4057833 (1977-11-01), Braat
patent: 4408314 (1983-10-01), Yokota
patent: 4467462 (1984-08-01), Shibata
patent: 4475183 (1984-10-01), Marchant et al.

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