Magnetooptical disc apparatus having single micro-processor for

Details Magnetooptical disc apparatus having single micro-processor for Magnetooptical disc apparatus having single micro-processor for

1994-10-12

1997-12-16

Neyzari, Ali

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 48, 369 4411, G11B 1722

Patent

active

056993307

ABSTRACT:
Input/output processing of information is controlled in a magnetooptical disc apparatus for recording and/or reproducing the information on a magnetooptical recording medium by irradiating a desired track of the recording medium with a light beam via an optical system. The servo control of the light beam such as tracking servo control, focusing servo control or the like is performed by causing interruption in the input/output processing control. When the apparatus activates, a parameter in the servo control is set on the basis of a reproduction signal amplitude of the information with a change in state of the servo control and a parameter in signal processing of the information is set in accordance with a reproduction signal amplitude of the information corresponding to the set parameter for the servo control.

REFERENCES:
patent: 4942563 (1990-07-01), Yamamuro
patent: 4972395 (1990-11-01), Baba
patent: 4989194 (1991-01-01), Aoi
patent: 5107101 (1992-04-01), Ando
patent: 5243585 (1993-09-01), Hoshino et al.
patent: 5260923 (1993-11-01), Baba
patent: 5477516 (1995-12-01), Takezawa
"Realtime Task Dispatcher for Multiloop Control System," IBM Technical Disclosure Bulletin, vol. 31, No. 6, Nov. 1988, pp. 446-453.

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