Magneto-optical recording medium including a calibration...

Details Magneto-optical recording medium including a calibration... Magneto-optical recording medium including a calibration...

2005-01-25

2005-01-25

Neyzari, Ali (Department: 2655)

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

C369S053200

Reexamination Certificate

active

06847590

ABSTRACT:
A magneto-optical recording medium which includes a reproducing layer. When a laser beam is irradiated to the magneto-optical recording medium, a magnetic domain in a recording layer is transferred, through enlargement, to a reproducing layer increased in temperature. The magneto-optical recording medium further includes a calibration area that has a calibration magnetic domain recorded in a predetermined pattern in the recording layer. In a reproducing apparatus, a laser beam of an optical head is adjusted in output depending upon a reproduced signal obtained by reproducing the calibration magnetic domain.

REFERENCES:
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patent: 5579294 (1996-11-01), Ohta et al.
patent: 5986977 (1999-11-01), Birukawa et al.
patent: 6188649 (2001-02-01), Birukawa et al.
patent: 6501707 (2002-12-01), Yamaguchi et al.

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