Magneto-optical apparatus

Details Magneto-optical apparatus Magneto-optical apparatus

1984-09-05

1987-01-27

McElheny, Jr., Donald

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

365113, 369109, G11B 7125

Patent

active

046399070

ABSTRACT:
A magneto-optical apparatus records, reads and erases information by radiating a laser beam on a magneto-optical medium which uses an amorphous material for a recording layer and which is subjected to information writing and erasure, wherein a predetermined DC signal is added to a focus error signal in the erasure mode, and the laser beam irradiates the magneto-optical medium in a defocused state.

REFERENCES:
patent: 4495530 (1985-01-01), Yanagida
patent: 4525824 (1985-06-01), Hatano et al.
patent: 4539662 (1985-09-01), Hatano et al.

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