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    • 7. 发明授权
    • Magneto-optical recording medium having two magnetic layers with the
same curie temperature
    • 具有两个具有相同居里温度的磁性层的磁光记录介质
    • US5487046A
    • 1996-01-23
    • US282212
    • 1994-07-28
    • Atsuyuki WatadaToshiaki TokitaMotoharu Tanaka
    • Atsuyuki WatadaToshiaki TokitaMotoharu Tanaka
    • G11B11/10G11B11/105G11B13/04
    • G11B11/10582G11B11/10506G11B11/10515G11B11/10521
    • A magneto-optical recording method for recording information in an overwrite mode in a magneto-optical recording medium by the application of a laser beam is disclosed. The magneto-optical recording medium includes a substrate, and at least two magnetic recording layers overlaid thereon, with an exchange force working at least between the two magnetic recording layers, and the Curie temperature of each of the two magnetic recording layers being substantially the same. The magneto-optical recording method includes the step of conducting overwriting information by changing the power of the laser beam to be applied to at least two different levels, one at which the magnetic recording layers are heated to a temperature near or higher than the Curie temperature, and the other at which the magnetic recording layers are heated to a temperature lower than the Curie temperature, while a magnetic field is applied to the magneto-optical recording medium in one direction, in accordance with signals to be recorded in the magneto-optical recording medium, and this recording method requires only one initialization by the application of the magnetic field, but does not require any further initialization thereafter.
    • 公开了一种用于通过施加激光束在磁光记录介质中以重写模式记录信息的磁光记录方法。 磁光记录介质包括至少两个覆盖在其上的磁记录层,至少两个磁记录层之间具有至少两个磁记录层之间的交换力,并且两个磁记录层中的每一个的居里温度基本相同 。 磁光记录方法包括通过将要施加的激光束的功率改变为至少两个不同级别来进行重写信息的步骤,一个磁记录层被加热到接近或高于居里温度的温度 ,另一个磁记录层被加热到低于居里温度的温度,同时根据要记录在磁光学中的信号在一个方向上对磁光记录介质施加磁场 记录介质,并且该记录方法仅需要通过施加磁场进行一次初始化,而不需要其后进一步的初始化。
    • 9. 发明授权
    • Magneto-optical recording medium
    • 磁光记录介质
    • US5430696A
    • 1995-07-04
    • US235116
    • 1994-04-28
    • Toshiaki TokitaMotoharu TanakaAtsuyuki Watada
    • Toshiaki TokitaMotoharu TanakaAtsuyuki Watada
    • G11B11/10G11B11/105G11B13/04
    • G11B11/1053G11B11/10506G11B11/10521
    • A magneto-optical recording method capable of overwriting on a magneto-optical recording medium is disclosed. The magneto-optical recording medium includes a recording layer comprising a single magnetic layer with magnetic anisotropy and the magneto-optical recording methods includes the step of applying a laser beam with a light power level P.sub.1 to the recording layer when a binary coded signal "1" is written therein under a fixed external magnetic field; and the steps of applying a laser beam with a light power level Poh to the recording layer and successively applying a laser beam with a light power level Pol to said recording layer when a binary coded signal "0" is written therein under a fixed external magnetic field, wherein Pol, P.sub.1 and Poh are in the relationship of O
    • 公开了能够在磁光记录介质上重写的磁光记录方法。 磁光记录介质包括具有磁各向异性的单个磁性层的记录层,并且磁光记录方法包括在二进制编码信号“1”处将具有光功率电平P1的激光束施加到记录层的步骤 “在固定的外部磁场下写入; 以及当将二进制编码信号“0”写入固定的外部磁场时,将具有光功率电平Poh的激光束施加到记录层并连续地将具有光功率电平Pol的激光束施加到所述记录层的步骤 其中Pol,P1和Poh处于O