Device for detecting the position of a recording/reproducing ele

Details Device for detecting the position of a recording/reproducing ele Device for detecting the position of a recording/reproducing ele

1994-02-22

1995-09-05

Epps, Georgia Y.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369121, 369 4432, 369 4441, G11B 700

Patent

active

054485401

ABSTRACT:
A device for detecting the position of a recording/reproducing element, which is provided with two position detecting elements having the same input/output characteristics and a device for generating a difference signal representing the difference between output signals of the two position detecting elements. Further, the outputs of the position detecting elements vary correspondingly to change in position of the recording/reproducing element in such a manner to be complementary to each other.

REFERENCES:
patent: 4764911 (1988-08-01), Morota et al.
patent: 4943166 (1990-07-01), Yamashita
patent: 5039202 (1991-08-01), Koyama et al.
patent: 5078471 (1992-01-01), Takishima
patent: 5079663 (1992-01-01), Ju et al.
patent: 5083301 (1992-01-01), Matoba et al.
patent: 5177718 (1993-01-01), Takeuchi
patent: 5182739 (1993-01-01), Kime et al.
patent: 5189653 (1993-02-01), Yanagi
patent: 5216648 (1993-06-01), Noda et al.

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