发明名称 |
MAGNETO-OPTICAL OVERWRITE RECORDING PROCESS BY WHICH C/N RATIO IS IMPROVED, AND MAGNETO-OPTICAL OVERWRITE RECORDING APPARATUS WHICH OPERATES IN THIS PROCESS. |
摘要 |
<p>In a magneto-optical recording process, a magneto-optical overwrite medium having film which comprises two layers joined by exchange connection and having different temperature characteristics of coercive forces is heated by irradiation of a light beam while an external magnetic field is applied to the medium, and the data which are so coded as to have necessarily a false value between truth values are recorded by the light beam of two-level power. The recording process includes the steps of forming recording marks by heating to a high temperature the magneto-optical overwrite medium by the light beam of high power so as to record the data of the false values, and heating to a low temperature the magneto-optical overwrite medium by the light beam of low level power so as to record the data of the truth values. <IMAGE></p> |
申请公布号 |
EP0573669(A1) |
申请公布日期 |
1993.12.15 |
申请号 |
EP19930900434 |
申请日期 |
1993.07.20 |
申请人 |
FUJITSU LIMITED |
发明人 |
IZUMI, HARUHIKO;MORITSUGU, MASAHARU;TAGUCHI, MASAKAZU FUJITSU LIMITED |
分类号 |
G11B11/105;(IPC1-7):G11B11/10 |
主分类号 |
G11B11/105 |
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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