Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1983-04-22
1986-09-23
Cardillo, Raymond F.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 45, 250201, 318635, G11B 709, G11B 716
Patent
active
046139613
ABSTRACT:
Faults in servo control systems as a result of, for example, signal spikes caused by defects such as thickness variations, air bubbles, and scratches and dust particles on the substrate of the record carrier in an apparatus for reading an optical record carrier, can be suppressed effectively by arranging a limiter in the servo control system of such an apparatus. Suitably, the limiter has an adaptive nature, i.e. the limiting levels are adapted to the amplitude of the servo signal.
REFERENCES:
patent: 3424402 (1969-01-01), Bulloch et al.
patent: 3942087 (1976-03-01), Maisch et al.
patent: 4074312 (1978-02-01), van Rosmalen
patent: 4152586 (1979-05-01), Elliot et al.
patent: 4243850 (1981-01-01), Edwards
patent: 4280215 (1981-07-01), Okano
patent: 4290132 (1981-09-01), Kotaka
patent: 4344165 (1982-08-01), Akiyama
patent: 4357696 (1982-11-01), Bierhoff et al.
patent: 4381557 (1983-04-01), Jebens
patent: 4385373 (1983-05-01), Howe
patent: 4414655 (1983-11-01), Shoji et al.
patent: 4497048 (1985-01-01), Kimura
Cardillo Raymond F.
Mayer Robert T.
Tamoshunas Algy
U.S. Philips Corporation
Young Wayne R.
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