Magneto-optic disk apparatus having means for eliminating fluctu

Details Magneto-optic disk apparatus having means for eliminating fluctu Magneto-optic disk apparatus having means for eliminating fluctu

1996-04-18

1997-09-16

Dinh, Tan

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369112, G11B 1100

Patent

active

056687869

ABSTRACT:
A magneto-optic disk apparatus for use with a magneto-optic disk in which a recording surface made of a magneto-optic information recording medium is formed on a transparent substrate having a birefringence. The magneto-optic disk apparatus includes an optical head for performing a recording and a reproduction by a laser beam for the recording surface, and a unit for eliminating a fluctuation component occurring in a reproduction magneto-optic signal, the fluctuation component eliminating unit being arranged in a convergent light up to an analyzer in a detection optical system.

REFERENCES:
patent: 4774615 (1988-09-01), Revelli et al.
patent: 4779250 (1988-10-01), Kogure et al.
patent: 5481530 (1996-01-01), Ueda et al.
K. Seo et al., "Error Propagation due to Dust on a Thin-Substrate Disk", Proceedings of the International Symposium on Optical Memory, Sapporo, Dec. 1991, Japanese Journal of Applied Physics Series 6, pp. 297-299, Dec. 1991.
N. Murayama et al., Optical Disk Technique, pp. 335-338, published in Japan by Radio Gijutsu, Ltd., on Jul. 20, 1992 (in Japanese).

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