Magneto-optical recording medium having a signal reproducing reg

Details Magneto-optical recording medium having a signal reproducing reg Magneto-optical recording medium having a signal reproducing reg

1998-07-15

1999-11-09

Neyzari, Ali

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

3692752, G11B 1100

Patent

active

059827157

ABSTRACT:
A magneto-optical recording medium with a reproducing layer that exhibits in-plane magnetization at room temperature and that comes to exhibit perpendicular magnetization as temperature rises. The second shielding layer is used to block the magnetization of record bits other than a record bit to be reproduced from being copied on a signal reproducing area in the reproducing layer. Consequently, even in the case of high-density record bits in the recording layer, only the magnetization of the record bit to be reproduced is copied on the reproducing layer. Therefore, the application of the magneto-optical recording medium makes it possible to produce superior reproducing signals even in the case where the records bits with high density are formed on the recording layer.

REFERENCES:
patent: 5623458 (1997-04-01), Matsumoto et al.
patent: 5629908 (1997-05-01), Hirokane et al.
patent: 5790513 (1998-08-01), Hiroki et al.
"The High Density Magneto-Optical Disk by Magnetic domain Expansion Readout" H. Awano, et al., Lecture Paper of the 20th Seminar of the Society of Applied Magnetics (1996), 22p.E-4, pp 313.

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