发明名称 |
Magneto-optical recording medium including a calibration magnetic domain recorded in a predetermined pattern in a recording layer |
摘要 |
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.
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申请公布号 |
US6847590(B2) |
申请公布日期 |
2005.01.25 |
申请号 |
US20010931080 |
申请日期 |
2001.08.17 |
申请人 |
SANYO ELECTRIC CO., LTD.;HITACHI MAXELL, LTD. |
发明人 |
YAMAGUCHI ATSUSHI;TAKAGI NAOYUKI;UCHIHARA YOSHIHARU;SUMI SATOSHI;AWANO HIROYUKI;SHIRAI HIROSHI;WATANABE HITOSHI;OHTA NORIO |
分类号 |
G11B7/007;G11B7/013;G11B11/105;(IPC1-7):G11B11/00 |
主分类号 |
G11B7/007 |
代理机构 |
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