Magneto-optical head utilizing central and peripheral portions o

Details Magneto-optical head utilizing central and peripheral portions o Magneto-optical head utilizing central and peripheral portions o

1990-09-04

1992-01-14

Levy, Stuart S.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369112, 369110, 369116, G11B 7135, G11B 718, G11B 1304

Patent

active

050816144

ABSTRACT:
A magneto-optical head wherein a light flux, which is reflected from a recording medium, is separated into its central portion and remaining portion. The central light flux portion is only used as a magneto-optical signal while the remaining light flux portion is only used as an optical servo signal.

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patent: 4517666 (1985-05-01), Ando
patent: 4546460 (1985-10-01), Ando
patent: 4599714 (1986-07-01), Endo
patent: 4682311 (1987-07-01), Matsubayashi et al.
patent: 4682315 (1987-07-01), Uejima
patent: 4754355 (1988-06-01), Takahashi et al.

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