Magneto-optical recording apparatus and method for modulating th

Details Magneto-optical recording apparatus and method for modulating th Magneto-optical recording apparatus and method for modulating th

1995-01-25

1996-10-15

Hindi, Nabil Z.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

G11B 1304

Patent

active

055661475

ABSTRACT:
A magneto-optical recording apparatus and method using a magnetic field modulation for forming a magnetic domain on a magneto-optical record medium by applying an external magnetic field which is modulated by record data, while applying a light beam spot which is fixed with respect to the direction of a data track on the magneto-optical record medium. The recording apparatus includes a magnetic field generation device for forming a pit, and a magnetic field strength control device for controlling the strength of an external magnetic field caused by the magnetic field generation device, by classifying it into three values depending on the record data.

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Oda, et al., "Process of Magnetization Reversal in a Spot Heated by Pulsed Laser Beam," Japan Appl. Magnetics Journ., vol. 10, No. 2, pp. 195-198, 1986.

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