Servo control loop

Details Servo control loop Servo control loop

1991-05-22

1992-09-08

Envall, Jr., Roy N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4411, G11B 7085

Patent

active

051464446

ABSTRACT:
A servo control arrangement for an optical scanner for focusing a light beam onto a recording medium or for guiding the light beam along data tracks of the recording medium. Light reflected from the recording medium is directed onto a plurality of photodiodes which are connected to a differential amplifier. The amplifier takes differences of the output signals from the photodiodes to generate a servo signal having superimposed high frequency noise components from data recorded on the recording medium. The high frequency noise components are eliminated by short circuiting through a capacitor connected between the inputs of the differential amplifier, whereby the inputs of the differential amplifier become free of the high frequency noise components.

REFERENCES:
patent: 4603410 (1986-07-01), Yoshida
patent: 4617654 (1986-10-01), Gross et al.
patent: 4736354 (1988-04-01), Yoshio
patent: 4794244 (1988-12-01), Kimura
patent: 4896309 (1990-01-01), Yamakawa et al.
patent: 4956833 (1990-09-01), Kokado et al .
patent: 5022021 (1991-06-01), Ito
patent: 5049733 (1991-09-01), Yoshifusa et al.

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