Reproducing transducer feeding device in a rotary recording medi

Details Reproducing transducer feeding device in a rotary recording medi Reproducing transducer feeding device in a rotary recording medi

1978-12-27

1981-01-27

Konick, Bernard

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

360 77, 369 47, G11B 2110

Patent

active

042477417

ABSTRACT:
The feeding device feeds a reproducing transducer in an apparatus for reproducing signals from a rotary recording medium having an information signal recording track formed thereon in a spiral path or concentric circular form and having reference signals recorded thereon interrelatedly with the information signal track. The reproducing transducer has a reproducing element for reproducing the information signal and the reference signals recorded on the rotary recording medium and tracking control mechanism for accomplishing tracking control so that the reproducing element traces the information signal track. The feeding device comprises a driving motor for driving the reproducing transducer in feeding travel over the rotary recording medium in the radial direction thereof, a circuit for producing a tracking control signal in response to the reference signals reproduced from the reproducing transducer and supplying the tracking control signal to the tracking control mechanism, a circuit for obtaining a DC component signal of the tracking control signal thus produced, and a circuit for controlling the driving operation of the driving motor in response to the DC component signal thus obtained.

REFERENCES:
patent: 3919697 (1975-11-01), Walker
patent: 4087842 (1978-05-01), Manly
patent: 4092682 (1978-05-01), Andrews, Jr. et al.
patent: 4135217 (1979-01-01), Jacques et al.
patent: 4152727 (1979-05-01), Tatsuguchi et al.
patent: 4160268 (1979-07-01), Goto et al.

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