Magneto-optical disc system and magneto-optical disc

Details Magneto-optical disc system and magneto-optical disc Magneto-optical disc system and magneto-optical disc

1992-09-28

1994-07-05

Psitos, Aristotelis

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369110, 369 13, 2502015, G11B 700, G01J 120

Patent

active

053274091

ABSTRACT:
A magneto-optical disc system and a medium used therewith are disclosed in which a magneto-optical disk having a magneto-optical recording layer on one major surface with a protective film formed on said magneto-optical recording layer, on which a magnetic head is slid, and an optical system having a focus servo mechanism on the other surface. The focus servo mechanism of the optical system satisfies a certain condition to avoid any focal blank.

REFERENCES:
patent: 4466035 (1984-08-01), Connell et al.
patent: 4564877 (1986-01-01), Ezaki et al.
patent: 4855992 (1989-08-01), Ikegawa et al.
Patent Abstracts of Japan, No. JP2308445, vol. 15, No. 095, Fujitsu Ltd., Dec. 21, 1990.
Patent Abstracts of Japan, No. JP1227241, vol. 13, No. 547, Alps Electric Co., Ltd., Nov. 9, 1989.
Patent Abstracts of Japan, No. JP1043834, vol. 13, No. 239, Alps Electric Co., Ltd., Feb. 16, 1989.

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