Recording information apparatus having a head speed detector

Details Recording information apparatus having a head speed detector Recording information apparatus having a head speed detector

1990-09-28

1992-09-15

Envall, Jr., Roy N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4425, 369 32, 369 4433, 360 7703, G11B 700

Patent

active

051484200

ABSTRACT:
A recording information apparatus for a recording medium having a track previously formed on the recording medium. The apparatus includes an objective lens for projecting a light beam on the optical disc, an optical head for carrying the objective lens, a photodetector for receiving reflected light from the optical disc and providing a reproduced signal indicative thereof, a circuit for generating a tracking error signal indicative of a deviation of the light beam from the center of a predetermined track in response to the reproduced signal from the photodetector, a tracking actuator for moving the objective lens in a direction perpendicular to the track in response to the tracking error signal, a drive motor for driving the optical head in the direction in response to the tracking error signal, a speed detector for detecting the moving speed of drive motor and providing a speed signal indicative thereof and a connection for suppressing the movement of the tracking actuator in response to the speed signal from the speed detector.

REFERENCES:
patent: 4302830 (1981-11-01), Hamaoka et al.
patent: 4684797 (1987-08-01), Ando et al.
patent: 4773055 (1988-09-01), Gijzen et al.
patent: 4788421 (1988-11-01), Ogawa et al.
patent: 4837757 (1989-06-01), Okada et al.
patent: 4839876 (1989-06-01), Fennema
patent: 4876679 (1989-10-01), Mukai
patent: 4896310 (1990-01-01), Wachi
patent: 4982397 (1991-01-01), Yokota
patent: 5018125 (1991-05-01), Uchikoshi et al.
patent: 5036506 (1991-07-01), Bierhoff

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