System for applying magnetic field to opto-magnetic memory

Details System for applying magnetic field to opto-magnetic memory System for applying magnetic field to opto-magnetic memory

1988-03-28

1991-01-08

Levy, Stuart S.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360114, G11B 1304, G11B 1110

Patent

active

049842250

ABSTRACT:
In a magnetic field generating apparatus, a coil is wound around a core and a magnetic extending section is extended from the core member. The magnetic extending section is formed into a taper form and has a magnetic field applying surface. A magnetic flux generated in the core by supplying a current to the coil is led into the extending section and emerged from the magnetic field applying surface to an opto-magnetic memory. The magnetic flux penetrates the opto-magnetic memory and is returned to the core through a yoke.

REFERENCES:
patent: 4849952 (1989-07-01), Shiho

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