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    Information reproducing apparatus
    1.
    发明授权
    Information reproducing apparatus 失效
    信息重放装置

    公开(公告)号：US06922384B2

    公开(公告)日：2005-07-26

    申请号：US09996843

    申请日：2001-11-29

    申请人： Harumitsu Miyashita ,  Junichi Minamino ,  Hiromichi Ishibashi ,  Shigeru Furumiya ,  Masahito Nakao

    发明人： Harumitsu Miyashita ,  Junichi Minamino ,  Hiromichi Ishibashi ,  Shigeru Furumiya ,  Masahito Nakao

    IPC分类号： G11B20/10 ,  G11B7/00

    CPC分类号： G11B20/10111 ,  G11B20/10009

    摘要： An apparatus for reproducing information that has been digitally recorded on a storage medium includes first and second waveform equalizers. The first waveform equalizer equalizes a read signal, corresponding to the information read out from the storage medium, thereby outputting a first equalized signal. The second waveform equalizer has an equalization characteristic different from that of the first waveform equalizer, outputs a second equalized signal and is selectively used to extract a read clock signal.

    摘要翻译： 用于再现已被数字记录在存储介质上的信息的装置包括第一和第二波形均衡器。 第一波形均衡器对与从存储介质读出的信息相对应的读信号进行均衡，从而输出第一均衡信号。 第二波形均衡器具有与第一波形均衡器不同的均衡特性，输出第二均衡信号，并且选择性地用于提取读时钟信号。

    Method and an apparatus for reproducing information based on reference wobble block and an information wobble block on an information recording medium
    2.
    发明授权
    Method and an apparatus for reproducing information based on reference wobble block and an information wobble block on an information recording medium 有权
    用于在信息记录介质上基于参考摆动块和信息摆动块再现信息的方法和装置

    公开(公告)号：US07315497B2

    公开(公告)日：2008-01-01

    申请号：US10300853

    申请日：2002-11-21

    申请人： Junichi Minamino ,  Masahito Nakao ,  Shigeru Furumiya ,  Hiromichi Ishibashi

    发明人： Junichi Minamino ,  Masahito Nakao ,  Shigeru Furumiya ,  Hiromichi Ishibashi

    IPC分类号： G11B7/00

    CPC分类号： G11B20/1403 ,  G11B7/0053 ,  G11B7/24082

    摘要： At the time of heterodyne detection, information is reproduced constantly in the optimum condition. A method reproduces information recording medium including a reference wobble block which has a first wobble pattern representing a first information content; and an information wobble block which follows the reference wobble block and which has at least one of the first wobble pattern and a second wobble pattern representing a second information and different from the first wobble pattern. The method includes reading the reference wobble block and the information wobble block; comparing a wobble pattern read from the information wobble block with the first wobble pattern of the reference wobble block; judging that information recorded in the information wobble block is the first information or the second information according to the wobble pattern read from the information wobble block; and outputting one of the first and the second information based on the judging result.

    摘要翻译： 在外差检测时，在最佳条件下不断地再现信息。 一种方法再现包括具有表示第一信息内容的第一摆动模式的参考摆动块的信息记录介质; 以及跟随参考摆动块并且具有表示第二信息并且不同于第一摆动图案的第一摆动图案和第二摆动图案中的至少一个的信息摆动块。 该方法包括读取参考摆动块和信息摆动块; 将从信息摆动块读取的摆动模式与参考摆动块的第一摆动模式进行比较; 判断记录在信息摆动块中的信息是根据从信息摆动块读取的摆动模式的第一信息或第二信息; 并基于判断结果输出第一和第二信息之一。

    Method and apparatus for reading address information from an optical disc medium
    3.
    发明授权
    Method and apparatus for reading address information from an optical disc medium 失效
    从光盘介质读取地址信息的方法和装置

    公开(公告)号：US07376056B2

    公开(公告)日：2008-05-20

    申请号：US10346856

    申请日：2003-01-17

    申请人： Masahito Nakao ,  Shigeru Furumiya ,  Hiromichi Ishibashi ,  Junichi Minamino ,  Naohiro Kimura

    发明人： Masahito Nakao ,  Shigeru Furumiya ,  Hiromichi Ishibashi ,  Junichi Minamino ,  Naohiro Kimura

    IPC分类号： G11B7/00

    CPC分类号： G11B27/24 ,  G11B7/005 ,  G11B7/007 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2529 ,  G11B2220/2545 ,  G11B2220/2562 ,  G11B2220/2575

    摘要： A method for reading address information from an optical disc with a wobbled track groove includes the steps of: obtaining a sine wave address signal, a first address signal representing a first groove region with sine wave wobbled portions and an inverted phase portion, and a second address signal representing a second groove region with steep inward or outward displacements; multiplying a first reference signal, being phase-locked to, and having the same frequency as, the sine wave address signal, and the first address signal together to obtain a first multiplied signal; multiplying a second reference signal, being phase-locked to, and having a frequency twice as high as, the sine wave address signal, and the second address signal together to obtain a second multiplied signal; integrating the first, multiplied signal and the second multiplied signal separately to obtain a first integral and a second integral, respectively; and adding the first and second integrals together.

    摘要翻译： 一种用于从具有摆动轨迹槽的光盘读取地址信息的方法包括以下步骤：获得正弦波地址信号，表示具有正弦波摆动部分和反相部分的第一沟槽区域的第一地址信号，以及第二 地址信号表示具有陡峭的向内或向外位移的第二沟槽区域; 将正弦波地址信号和第一地址信号相位锁定并具有与频率相同的第一参考信号，以获得第一相乘信号; 将正弦波地址信号和第二地址信号的频率两倍的频率的第二参考信号相乘并获得第二相乘信号; 分别对第一乘法信号和第二乘法信号进行积分以分别获得第一积分和第二积分; 并将第一和第二积分相加。