Magneto-optical recording medium and reading method with magneti

Details Magneto-optical recording medium and reading method with magneti Magneto-optical recording medium and reading method with magneti

1995-12-18

1998-01-20

Neyzari, Ali

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

428694MM, G11B 1100

Patent

active

057107467

ABSTRACT:
A magneto-optical disc (1) includes a write/read magnetic layer (4) with high coercivity on a substrate (2) and an auxiliary magnetic layer (6) with low coercivity thereon in a magnetostatically coupled manner. Both the magnetic layers are recorded. Prior to or during reading, an external magnetic field of controlled strength is applied to initialize the auxiliary magnetic layer (6). The recorded magnetization information in the write/read magnetic layer (4) is read out by irradiating reading light from the side of write/read magnetic layer (4). Reading with improved C/N is possible.

REFERENCES:
patent: 5187694 (1993-02-01), Ichihara
patent: 5593791 (1997-01-01), Fugii et al.

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