Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1994-04-28
1995-07-04
Epps, Georgia Y.
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
369116, 360 59, G11B 1304
Patent
active
054306965
ABSTRACT:
A magneto-optical recording method capable of overwriting on a magneto-optical recording medium is disclosed. The magneto-optical recording medium includes a recording layer comprising a single magnetic layer with magnetic anisotropy and the magneto-optical recording methods includes the step of applying a laser beam with a light power level P.sub.1 to the recording layer when a binary coded signal "1" is written therein under a fixed external magnetic field; and the steps of applying a laser beam with a light power level Poh to the recording layer and successively applying a laser beam with a light power level Pol to said recording layer when a binary coded signal "0" is written therein under a fixed external magnetic field, wherein Pol, P.sub.1 and Poh are in the relationship of O<Pol<P.sub.1 <Poh.
REFERENCES:
patent: 4910622 (1990-03-01), Saito et al.
patent: 4938915 (1990-07-01), Saito
patent: 5164925 (1992-11-01), Saito et al.
Tanaka Motoharu
Tokita Toshiaki
Watada Atsuyuki
Dinh Tan
Epps Georgia Y.
Ricoh & Company, Ltd.
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