Focus servo device for detecting and compensating for disk abnor

Details Focus servo device for detecting and compensating for disk abnor Focus servo device for detecting and compensating for disk abnor

1987-08-12

1988-04-05

Cardillo, Raymond F.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369 44, 369 46, G11B 7095

Patent

active

047363541

ABSTRACT:
A focus servo device in which loop gain is reduced in response to detected abnormalities in a recorded disk, in order to prevent interference with a tracking servo device in an optical disk player.

REFERENCES:
patent: 4414655 (1983-11-01), Shoji et al.
patent: 4506149 (1985-03-01), Utsumi

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