Data reading device having servo controlled position reset

Details Data reading device having servo controlled position reset Data reading device having servo controlled position reset

1983-05-19

1990-10-23

McElheny, Jr., Donald

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4437, 358342, G11B 709

Patent

active

049657810

ABSTRACT:
In a data reading device of the type in which a servo loop controls the movement of a reflection mirror to control the position of the data detection point, a second servo loop is used to return the mirror to its initial position when the amount of deflection of the mirror exceeds a predetermined range.

REFERENCES:
patent: 3975630 (1976-08-01), Zorn
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patent: 4290132 (1981-09-01), Kotaka
patent: 4330880 (1982-05-01), Van Dijk
patent: 4432083 (1984-02-01), Hsieh et al.
patent: 4467462 (1984-08-01), Shibata
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patent: 4484319 (1984-11-01), Koishi et al.
patent: 4494154 (1985-01-01), Akiyama
patent: 4497048 (1985-01-01), Kimura
Graf, Modern Dictionary of Electronics, 1978, p. 433.

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