Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1993-01-28
1995-04-25
Nguyen, Hoa T.
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
360114, 360 59, G11B 1304
Patent
active
054105218
ABSTRACT:
A method of information recording on a magnetic recording medium by applying a first magnetic field to the medium in a direction perpendicular to the surface of the substrate; and applying a second magnetic field to the medium in a direction along the surface of the substrate, wherein in at least one of the first and second magnetic fields, the direction of magnetic field varies according to the information and an apparatus for information recording on the magnetic recording medium features a first magnetic field generator for applying to the medium a magnetic field in a direction perpendicular to the surface of the substrate and a second magnetic field generator for applying to the medium a magnetic field in a direction along the surface of the substrate, wherein at least one of the first and second magnetic field generators varies the direction of magnetic field according to the information.
REFERENCES:
patent: 3521294 (1970-07-01), Treves
patent: 3876994 (1975-04-01), Calhoun
patent: 4343038 (1982-08-01), Enz
patent: 4857415 (1989-08-01), Tustison
patent: 4938915 (1990-07-01), Saito
Canon Kabushiki Kaisha
Nguyen Hoa T.
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