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    Recording medium, method for recording and reproducing data using the medium, and magneto-optical recording apparatus
    1.
    发明授权
    Recording medium, method for recording and reproducing data using the medium, and magneto-optical recording apparatus 失效
    记录介质，使用介质记录和再现数据的方法以及磁光记录装置

    公开(公告)号：US06754141B1

    公开(公告)日：2004-06-22

    申请号：US09591445

    申请日：2000-06-09

    申请人： Akiyoshi Uchida ,  Masakazu Taguchi ,  Akihiro Itakura

    发明人： Akiyoshi Uchida ,  Masakazu Taguchi ,  Akihiro Itakura

    IPC分类号： G11B1100

    CPC分类号： G11B11/10528 ,  G11B11/10515 ,  G11B11/1053 ,  G11B11/10584 ,  G11B11/10595

    摘要： A magneto-optical recording medium, a method for recording and reproducing data using the medium and a magneto-optical recording apparatus are provided in which an optical head reads the recorded data while applying a magnetic field, and the ill effect of the leakage magnetic field from the neighboring tracks can be suppressed so as to obtain a correctly read signal. The magneto-optical recording medium includes a recording layer, an intermediate layer and a reproduction layer. The signal recorded in the recording layer is read using a light beam irradiated externally and a magnetic field applied externally. The signal recorded in the recording layer is transferred to the reproduction layer via the intermediate layer. Marks are recorded so that each of leading and trailing edges of a recorded mark is substantially aligned with center portions of a recorded mark or a space of neighboring tracks, and the neighboring tracks have different polarities. When reproducing the marks, the signal including the recorded mark is read under the condition where the influences of the leakage magnetic fields from the neighboring tracks counterbalance each other.

    摘要翻译： 提供一种磁光记录介质，使用介质记录和再现数据的方法以及磁光记录装置，其中光头在施加磁场时读取记录数据，并且泄漏磁场的不良影响 可以抑制来自相邻轨道的信号，以获得正确读取的信号。 磁光记录介质包括记录层，中间层和再现层。 使用外部照射的光束和外部施加的磁场来读取记录在记录层中的信号。 记录在记录层中的信号经由中间层传送到再现层。 记录标记，使得记录标记的前缘和后缘中的每一个基本上与记录的标记的中心部分或相邻轨道的空间对准，并且相邻的轨道具有不同的极性。 当再现标记时，在来自相邻轨道的泄漏磁场的影响相互平衡的条件下，读取包括记录标记的信号。

    Apparatus for reading data
    7.
    发明授权
    Apparatus for reading data 失效
    数据读取装置

    公开(公告)号：US06891689B2

    公开(公告)日：2005-05-10

    申请号：US09818766

    申请日：2001-03-27

    申请人： Masakazu Taguchi ,  Akihiro Itakura ,  Akiyoshi Uchida

    发明人： Masakazu Taguchi ,  Akihiro Itakura ,  Akiyoshi Uchida

    IPC分类号： H04N5/92 ,  G11B5/008 ,  G11B5/012 ,  G11B7/00 ,  G11B20/10 ,  G11B20/14 ,  G11B5/09 ,  G11B27/36

    CPC分类号： G11B20/10037 ,  G11B5/00813 ,  G11B5/012 ,  G11B7/00 ,  G11B20/10009

    摘要： In an apparatus for reading recorded data, the apparatus, a read signal is sampled from recorded data of a recording medium by synchronizing with a first clock signal. A sample value obtained by the sampling part is stored and also the sample value from the first storing part is retrieved by synchronizing a second clock signal different from the first clock signal and maximum likelihood data is detected by processing the sample value in accordance with a predetermined algorithm. The recorded data is read based on the detected data.

    摘要翻译： 在用于读取记录数据的装置中，通过与第一时钟信号同步，从记录介质的记录数据中对读取信号进行采样。 存储由采样部获得的采样值，并且通过使与第一时钟信号不同的第二时钟信号同步来检索来自第一存储部分的采样值，并且通过根据预定的处理来检测采样值来检测最大似然数据 算法。 基于检测到的数据读取所记录的数据。