Magneto-optic disk apparatus

Details Magneto-optic disk apparatus Magneto-optic disk apparatus

1992-05-22

1995-05-30

Argenbright, Tony M.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360 59, G11B 700

Patent

active

054208351

ABSTRACT:
In an magneto-optic disk apparatus which carries out recording, playback, or erasing of data with a single laser beam, recorded data is read simultaneously with a recording or erasing operation to eliminate the time of waiting for the disk to make a turn. A signal separation circuit 7 is provided for a magneto-optic disk apparatus which carries out recording, playback, erasing of data by applying a laser beam through an optical head 2 to a spot on a magneto-optic disk 3. In a recording or erasing operation, a magneto-optic playback signal 6 obtained from reflected light of a recording or erasing beam is input to the signal separation circuit 7 to separate and output the recorded data signal 8 contained in the magneto-optic playback signal 6 to consequently reading a recorded data signal 10 simultaneously with carrying out a recording or erasing operation.

REFERENCES:
patent: 4754446 (1988-06-01), Reno
patent: 4879703 (1989-11-01), Kaku et al.
patent: 4991158 (1991-02-01), Wada
patent: 5204847 (1993-04-01), Tayefeh

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