Magneto-optical disk recording apparatus

Details Magneto-optical disk recording apparatus Magneto-optical disk recording apparatus

1989-12-08

1991-03-05

Levy, Stuart S.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369116, 369121, 360 59, 360114, G11B 1304, G11B 1112, G11B 1110

Patent

active

049982311

ABSTRACT:
A magneto-optical disk recording apparatus sequentially pulse-drive a plurality of semiconductor laser elements in a time-divisional manner so that spots of light are sequentially formed along a plurality of recording tracks of a magneto-optical disk with clock information recorded in advance along a plurality of recording tracks thereon. A magnetic modulating signal is generated by combining pieces of information desired to be recorded along the plurality of recording tracks so that a modulating magnetic field whose polarity is reversed in accordance with the magnetic modulating signal is applied to the plurality of recording tracks by means of a magnetic head.

REFERENCES:
patent: 4558440 (1985-12-01), Tomita
patent: 4598393 (1986-07-01), Pierce et al.
patent: 4712203 (1987-12-01), Saito et al.
patent: 4907211 (1990-03-01), Horimai et al.

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