Magneto-optical head

Details Magneto-optical head Magneto-optical head

1998-11-18

2000-07-18

Dinh, Tan

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360114, G11B 1100

Patent

active

060916737

ABSTRACT:
A magneto-optical head includes an optical head provided with a light-focusing device for focusing a beam spot on an information-recording medium and a magnetic head provided with a magnetic-field applying device for applying a magnetic field to the information-recording medium. The optical head and the magnetic head have the same rotation center and are arranged to rotate together in respective planes parallel to the information-recording medium.
The relative position shift between the beam spot and the magnetic-field applying device, which occurs when the beam spot follows eccentric components of the information-recording medium, is avoided. As a result, a magnetic-field applying device can be miniaturized, resulting in decrease in power consumption and in inductance of the magnetic head. Consequently, data can be recorded at a high frequency, thus improving the recording density and transfer speed.

REFERENCES:
patent: 5107471 (1992-04-01), Miyake et al.
patent: 5168484 (1992-12-01), Wachi et al.
patent: 5247493 (1993-09-01), Kime et al.
patent: 5625607 (1997-04-01), Chaya
Patent Abstracts of Japan, Publication No. 06139646 A, published May 20, 1994.
Patent Abstracts of Japan, Publication No. 02292756 A, published Apr. 23, 1990.

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