Optical disk recording/reproducing apparatus and a photoelectric

Details Optical disk recording/reproducing apparatus and a photoelectric Optical disk recording/reproducing apparatus and a photoelectric

1991-02-06

1993-04-13

Young, W. R.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

2502015, 369 4432, 369 4435, 369124, G11B 7095

Patent

active

052028704

ABSTRACT:
In a photoelectric conversion amplifier for converting a light signal into a voltage signal, a resistor and a capacitor connected in parallel are provided between a non-inverted input terminal of a differential amplifier and a reference voltage source terminal, and thereby an offset voltage of the differential amplifier is eliminated and a frequency characteristic is improved to have a wideband.

REFERENCES:
patent: 4637003 (1987-01-01), Yokogawa
patent: 4736354 (1988-04-01), Yoshio
patent: 4748610 (1988-05-01), Nakata et al.
patent: 4847824 (1989-07-01), Davie
patent: 4964110 (1990-10-01), Horimai et al.
patent: 5049733 (1991-09-01), Yoshifusa et al.
Shigematsu et al., "Technical Note", Central Research Laboratory, Hitachi, Ltd., Applied Physics, vol. 55, No. 7, 1986, p. 688.
Patent Abstracts of Japan, vol. 8, No. 144, Jul. 1984, and JP 59-42650, Mar. 1984.

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