Magnetic field generation mechanism for magneto-optical recordin

Details Magnetic field generation mechanism for magneto-optical recordin Magnetic field generation mechanism for magneto-optical recordin

1993-02-10

1994-11-22

Hajec, Donald

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360114, G11B 1100, G11B 5127

Patent

active

053675088

ABSTRACT:
A magnetic field generation mechanism is confirmed by combining a plurality of magnets that generate magnetic fields in different directions. Since the magnetic field strength of the magnet for initialization magnetic field can be increased without increasing its thickness by providing a magnet for amplification that generates a magnetic field in a direction perpendicular to the magnet for initialization, a compact, thin device can be realized utilizing a magneto-optical recording device capable of direct overwrite on switched connection multilayer film. Further, by including a rotatable biased magnet, the device can also be used on prior art rewritable magneto-optical discs.

REFERENCES:
patent: 4862437 (1989-08-01), Okada
patent: 4984226 (1991-01-01), Kobori
patent: 5022018 (1991-06-01), Vogelgesang
patent: 5088074 (1992-02-01), Sato
patent: 5218488 (1993-06-01), Berg
patent: 5220544 (1993-06-01), Kikuchi et al.
patent: 5243580 (1993-09-01), Maeda
Optical Data Storage Topic Meeting "Direct Overwriting System by Light Intensity Modulation Using Triple-Layer Disks" F. Maeda et al., Sony Corp. 1991.

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