发明名称 |
Laser beam forming temperature distribution of two peaks on a magneto-optical recording medium |
摘要 |
A method and apparatus for reproducing information on a magneto-optical recording medium can reproduce a signal having a period equal to or smaller than the diffraction limit of light at high speed, can obtain a reproduced signal with a high C/N ratio from a small recorded domain at an amplitude nearly equal to that of a large recorded domain, can greatly improve the recording density and transfer rate, and can also make the reproduction apparatus compact. The information reproduction method includes the steps of irradiating a laser beam onto a medium and forming a temperature distribution having at least two peaks by the laser beam. The apparatus has a laser light source and an optical system for irradiating a laser beam emitted by the light source onto the medium, wherein the laser beam forms the temperature distribution having at least two peaks.
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申请公布号 |
US5995472(A) |
申请公布日期 |
1999.11.30 |
申请号 |
US19980069775 |
申请日期 |
1998.04.30 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
FUJII, EIICHI;NISHIKAWA, KOICHIRO |
分类号 |
G11B7/125;G11B7/135;G11B11/105;(IPC1-7):G11B11/10 |
主分类号 |
G11B7/125 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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