Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1987-01-21
1989-01-03
Faber, Alan
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
360114, 360 59, 365122, G11B 503, G11B 1112
Patent
active
047962410
ABSTRACT:
A device for producing a high frequency modulating magnetic field is disclosed. The device is especially useful to achieve real-time overwriting in magneto-optical recording. The device produces magnetic field modulated according to a signal to be recorded on a magneto-optical recording medium in which the signal is recorded in the form of magnetization direction on the magneto-optical recording medium under irradiation of a laser beam to raise the temperature of the medium. The device comprises a main magnetic pole formed of a low-loss soft magnetic material and having one end facing to the magnetic-optical recording medium and a sheathed conductor wound around the main magnetic pole and consisting of a parallel connection of a plurality of insulated elementary wires.
REFERENCES:
patent: 3946349 (1976-03-01), Haldeman, III
patent: 4507640 (1985-03-01), Rich, III et al.
Aso Koichi
Hayakawa Masatoshi
Nagaki Takehiro
Yamanoi Hiroshi
Faber Alan
Nguyen Noa T.
Sony Corporation
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