Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1982-05-20
1985-09-03
Richardson, Robert L.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
358907, 358342, G11B 700, G11B 2108
Patent
active
045396647
ABSTRACT:
In a device for reproducing the information, especially the video signal optically, magnetically or otherwise recorded on the spiral or concentric track on a disk-shaped recording medium, a control system for controlling the radially inward or outward shift or jump of a reproduction transducer from one track to another for effecting, in addition to the normal reproduction, the special effect reproductions such as still picture, slow, fast and reverse motions. The control system comprising a shifting means for shifting or jumping the transducer in the radial directions substantially perpendicular to the tracks, a control means for maintaining the transducer to scan the desired track, and a detecting means for detecting whether or not the transducer has been shifted or jumped and brought to the desired track and generating the output signal in response to which the shifting means is disabled to decelerate and stop the shifting or jumping of the transducer.
REFERENCES:
patent: 4138663 (1979-02-01), Lehureau et al.
patent: 4397009 (1983-08-01), Eriksson
Deguchi Masahiro
Goto Yasuhiro
Moriya Mitsuro
Shiragami Kazuharu
Wakami Noboru
Matsushita Electric - Industrial Co., Ltd.
Richardson Robert L.
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