Single-head, direct overwrite magneto-optic system and method

Details Single-head, direct overwrite magneto-optic system and method Single-head, direct overwrite magneto-optic system and method

1988-02-10

1989-11-21

Faber, Alan

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

365122, G11B 1112, G11B 1304

Patent

active

048827185

ABSTRACT:
A magneto-optic information storage system is disclosed suitable for compensation point recording in the absence of an external bias field. The pulse of light used to erase imparts less energy than the pulse used to write. Also disclosed is a method for directly overwriting data recorded on a magneto-optic medium by applying lower energy erasing pulses of light and higher energy writing pulses.

REFERENCES:
patent: 3949387 (1976-04-01), Chaudhari et al.
patent: 4649519 (1987-03-01), Sun et al.
patent: 4701881 (1987-10-01), Tanaka et al.
patent: 4771347 (1988-09-01), Horimai et al.
patent: 4787077 (1988-11-01), Barton et al.
patent: 4794560 (1988-12-01), Belt et al.
Braat et al., "High Density Magneto-Optical Recording", Proceedings of SPIE-The Inter. Society for Optical Engineering, vol. 420, pp. 206-213, 6/(6-10)/1983.

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