Magneto-optical disk recording and reading apparatus and method

Details Magneto-optical disk recording and reading apparatus and method Magneto-optical disk recording and reading apparatus and method

1993-04-22

1996-02-27

Neyzari, Ali

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369 32, 369215, G11B 1100, G11B 1722

Patent

active

054954550

ABSTRACT:
A magneto-optical disc recording apparatus includes a magnetic head, an optical head, a position detector and a controller. The magnetic head supplies a vertical magnetic field corresponding to recording data to a magneto-optical disc. The optical head emits a light beam to the magneto-optical disc through a substrate of the magneto-optical disc. The magneto-optical disc is arranged between the magnetic head and the optical head. The optical head has an actuator for moving an objective lens in a tracking direction. The position detector detects the displacement of the actuator. The controller controls a recording operation of the magnetic head and the optical head. The recording operation is started when a result of detection by the position detector reaches a predetermined value.

REFERENCES:
patent: 4736353 (1988-04-01), Kasai et al.
patent: 4937801 (1990-06-01), Miura et al.
patent: 5070494 (1991-12-01), Emoto et al.
patent: 5191562 (1993-03-01), Hensing et al.

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