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    Reproducing signal measuring method, signal reproducing apparatus, and optical recording medium
    1.
    发明申请
    Reproducing signal measuring method, signal reproducing apparatus, and optical recording medium 有权
    再现信号测量方法，信号再现装置和光学记录介质

    公开(公告)号：US20090040897A1

    公开(公告)日：2009-02-12

    申请号：US12153222

    申请日：2008-05-15

    申请人： Akemi Hirotsune ,  Junko Ushiyama ,  Hiroyuki Minemura ,  Takahiro Kurokawa ,  Harukazu Miyamoto

    发明人： Akemi Hirotsune ,  Junko Ushiyama ,  Hiroyuki Minemura ,  Takahiro Kurokawa ,  Harukazu Miyamoto

    IPC分类号： G11B20/18 ,  G11B7/24 ,  G11B11/00

    CPC分类号： G11B7/005 ,  G11B7/24038 ,  G11B20/1217 ,  G11B20/22 ,  G11B2007/0013 ,  G11B2020/1298 ,  G11B2220/235 ,  G11B2220/2537

    摘要： Regarding a signal recorded with a first frequency in a recording area on a specific first recording layer and a signal recorded with a second frequency different from the first frequency in a recording area on a second recording layer which might cause interlayer crosstalk in relation to the first recording layer, a reproducing signal measurement method for a multilayer optical recording medium having at least three recording layers includes reproducing the signal recorded in the recording area on the first recording layer, separating signals recorded respectively with the first and second frequencies, discriminating signal amplitude of the first frequency and a maximum value in signal amplitude of the second frequency, and calculating a signal amplitude ratio between them to measure interlayer crosstalk contained in the signal reproduced from the recording area on the first recording layer. Thus, the interlayer crosstalk quantity caused by unnecessary light can be measured quantitatively.

    摘要翻译： 关于在特定第一记录层上的记录区域中以第一频率记录的信号和在第二记录层上的记录区域中以与第一频率不同的第二频率记录的信号，其可能引起与第一频率相关的层间串扰 记录层，用于具有至少三个记录层的多层光学记录介质的再现信号测量方法包括：再现记录在第一记录层上的记录区域中的信号，分离分别记录第一和第二频率的信号，区分信号幅度 第一频率和第二频率的信号幅度的最大值，并且计算它们之间的信号幅度比以测量从第一记录层上的记录区域再现的信号中包含的层间串扰。 因此，可以定量地测量由不必要的光引起的层间串扰量。

    Reproducing signal measuring method, signal reproducing apparatus, and optical recording medium
    2.
    发明授权
    Reproducing signal measuring method, signal reproducing apparatus, and optical recording medium 有权
    再现信号测量方法，信号再现装置和光学记录介质

    公开(公告)号：US08089841B2

    公开(公告)日：2012-01-03

    申请号：US12153222

    申请日：2008-05-15

    申请人： Akemi Hirotsune ,  Junko Ushiyama ,  Hiroyuki Minemura ,  Takahiro Kurokawa ,  Harukazu Miyamoto

    发明人： Akemi Hirotsune ,  Junko Ushiyama ,  Hiroyuki Minemura ,  Takahiro Kurokawa ,  Harukazu Miyamoto

    IPC分类号： G11B7/00

    CPC分类号： G11B7/005 ,  G11B7/24038 ,  G11B20/1217 ,  G11B20/22 ,  G11B2007/0013 ,  G11B2020/1298 ,  G11B2220/235 ,  G11B2220/2537

    摘要： Regarding a signal recorded with a first frequency in a recording area on a specific first recording layer and a signal recorded with a second frequency different from the first frequency in a recording area on a second recording layer which might cause interlayer crosstalk in relation to the first recording layer, a reproducing signal measurement method for a multilayer optical recording medium having at least three recording layers includes reproducing the signal recorded in the recording area on the first recording layer, separating signals recorded respectively with the first and second frequencies, discriminating signal amplitude of the first frequency and a maximum value in signal amplitude of the second frequency, and calculating a signal amplitude ratio between them to measure interlayer crosstalk contained in the signal reproduced from the recording area on the first recording layer. Thus, the interlayer crosstalk quantity caused by unnecessary light can be measured quantitatively.

    摘要翻译： 关于在特定第一记录层上的记录区域中以第一频率记录的信号和在第二记录层上的记录区域中以与第一频率不同的第二频率记录的信号，其可能引起与第一频率相关的层间串扰 记录层，用于具有至少三个记录层的多层光学记录介质的再现信号测量方法包括：再现记录在第一记录层上的记录区域中的信号，分离分别记录第一和第二频率的信号，区分信号幅度 第一频率和第二频率的信号幅度的最大值，并且计算它们之间的信号幅度比以测量从第一记录层上的记录区域再现的信号中包含的层间串扰。 因此，可以定量地测量由不必要的光引起的层间串扰量。

    Information reproduction apparatus and information reproduction method
    6.
    发明授权
    Information reproduction apparatus and information reproduction method 失效
    信息再现装置和信息再现方法

    公开(公告)号：US07349321B2

    公开(公告)日：2008-03-25

    申请号：US10928261

    申请日：2004-08-30

    申请人： Hiromi Kudo ,  Hiroyuki Minemura ,  Akemi Hirotsune ,  Harukazu Miyamoto

    发明人： Hiromi Kudo ,  Hiroyuki Minemura ,  Akemi Hirotsune ,  Harukazu Miyamoto

    IPC分类号： G11B7/00

    CPC分类号： G11B20/10212 ,  G11B7/0903 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10101 ,  G11B20/10111 ,  G11B20/1012 ,  G11B2020/1288 ,  G11B2220/2541

    摘要： Disclosed here is an apparatus and method for realizing write/read of mass information by reducing cross-talk components that are apt to increase in narrow tracks when various disturbances and variations are recognized. In order to achieve the above object, the apparatus is provided with a plurality of equalizers for correcting frequency characteristics of signals reproduced from a plurality of spots, then outputs from those equalizers are subjected to a computing process to correct tap coefficients of the equalizers sequentially so as to minimize the influence of the subject cross-talk, thereby realizing stable reduction of the cross-talk components.

    摘要翻译： 这里公开了一种通过在识别出各种扰动和变化的情况下减少在窄轨道中容易增加的串扰分量来实现质量信息的写入/读取的装置和方法。 为了实现上述目的，该装置设置有多个用于校正从多个点再现的信号的频率特性的均衡器，然后对来自这些均衡器的输出进行计算处理以依次校正均衡器的抽头系数 以最小化对象串扰的影响，从而实现串扰分量的稳定降低。