Optical disc player with servo system gain controlled with hyste

Details Optical disc player with servo system gain controlled with hyste Optical disc player with servo system gain controlled with hyste

1990-12-05

1993-04-13

Young, W. R.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4435, 369 54, G11B 7095

Patent

active

052028720

ABSTRACT:
An optical disc apparatus includes an optical pickup for reading recorded information on an optical disc, a servo controller for performing tracking servo control and/or focus servo control of the optical pickup in response to an output signal from the optical pickup, a vibration detector for detecting a vibration of the apparatus, and a control circuit for performing up and down control of a servo gain for the tracking servo and/or the focus servo of the optical pickup in response to an output signal from the vibration detector.

REFERENCES:
patent: 4614863 (1986-09-01), Sato
patent: 4703468 (1987-10-01), Baba et al.
patent: 4890273 (1989-12-01), Takeuchi et al.

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