Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1990-04-04
1991-09-10
Envall, Jr., Roy N.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 32, 369 4428, G11B 2108, G11B 7085
Patent
active
050480014
ABSTRACT:
In an apparatus for searching a desired track of a recording carrier by transferring and controlling the reproduction position of the pickup for reproducing the signal recorded on a recording carrier on the basis of reference transfer information, the traveling load is measured, and the value of the reference transfer information is corrected according to this measured value, so that the desired track may be searched stably. The transfer motor is driven so that the reproduction position may move at a constant velocity, and the traveling load is measured. The transfer motor is driven so that the moving speed of the reproduction position or the time for moving a specified distance may be predetermined specific value, and by this driving signal, the value corresponding to the traveling load is determined.
REFERENCES:
patent: 4331987 (1982-05-01), Oda et al.
patent: 4901299 (1990-02-01), Nakatsu
Moriya Mitsuro
Shibano Masayuki
Watanabe Katsuya
Yamada Shin-ichi
Yamaguchi Hiroyuki
Envall Jr. Roy N.
Matsushita Electric - Industrial Co., Ltd.
Nabil Hindi
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