利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

88 条记录 (耗时 0.032 秒)

    Optical disc, and recording apparatus, recording method, and reproducing apparatus for the same
    1.
    发明授权
    Optical disc, and recording apparatus, recording method, and reproducing apparatus for the same 有权
    光盘，记录装置，记录方法和再现装置

    公开(公告)号：US06735160B1

    公开(公告)日：2004-05-11

    申请号：US09609317

    申请日：2000-06-30

    申请人： Harumitsu Miyashita ,  Hiromichi Ishibashi ,  Shinichi Tanaka ,  Takashi Yumiba

    发明人： Harumitsu Miyashita ,  Hiromichi Ishibashi ,  Shinichi Tanaka ,  Takashi Yumiba

    IPC分类号： G11B700

    CPC分类号： G11B20/0021 ,  G11B7/24085 ,  G11B20/00086 ,  G11B20/00166 ,  G11B20/00586 ,  G11B20/1403

    摘要： An optical disc recording apparatus records a digital content onto an optical disc so that the perfect copying of the digital content is difficult without proper authorization. The optical disc recording apparatus includes a formatter for generating a channel signal corresponding to primary digital information, a secret key storing unit for prestoring secondary digital information, a pseudo random number generator for generating a pseudo random number series, an XOR for logically inverting the pseudo random number series according to each bit of the secondary digital information, a PE modulator for generating a PE modulation signal according to the logically inverted pseudo random number series, a phase modulator for modulating the phase of each edge of the channel signal by a fixed slight time according to the value of the PE modulation signal, and a recording channel for forming recording marks on a DVD according to the modulated channel signal.

    摘要翻译： 光盘记录装置将数字内容记录到光盘上，使得在没有适当授权的情况下数字内容的完美复制是困难的。 光盘记录装置包括用于产生对应于主数字信息的信道信号的格式器，用于预存次数字信息的秘密密钥存储单元，用于产生伪随机数序列的伪随机数发生器，用于逻辑反转伪随机数序列的伪异或 根据第二数字信息的每一位的随机数序列，用于根据逻辑反相伪随机数序列产生PE调制信号的PE调制器，用于通过固定的微调对通道信号的每个边沿的相位进行调制的相位调制器 根据PE调制信号的值的时间，以及根据调制信道信号在DVD上形成记录标记的记录通道。

    Method for evaluating quality of read signal and apparatus for reading information
    8.
    发明授权
    Method for evaluating quality of read signal and apparatus for reading information 有权
    用于评估读取信号的质量的方法和用于读取信息的装置

    公开(公告)号：US08270542B2

    公开(公告)日：2012-09-18

    申请号：US12510419

    申请日：2009-07-28

    申请人： Takeshi Nakajima ,  Harumitsu Miyashita ,  Hiromichi Ishibashi ,  Shigeru Furumiya

    发明人： Takeshi Nakajima ,  Harumitsu Miyashita ,  Hiromichi Ishibashi ,  Shigeru Furumiya

    IPC分类号： H04L27/06

    CPC分类号： G11B20/1816

    摘要： A most probable path is selected from a number n (where n≧2) of paths of state transitions occurring from a first state Sk−j (where k≧3 and j≧2) at a time k−j into a second state Sk at a time k. The method includes the steps of detecting predetermined combinations of the first and second states Sk−j and Sk defining the n probable paths in a predetermined period j between the times k−j and k, and evaluating the reliability of a read signal, decoded in the period j, by |Pa−Pb|. Pa and Pb indicate the probabilities of state transition of first and second state transition paths in the period j. The first and second state transition paths are estimated to be the most probable and the second most probable, respectively, among the n probable paths defined by the combinations detected.

    摘要翻译： 从时刻k-j的第一状态Sk-j（其中k≥3和j≥2）发生的状态转换路径的数n（其中n≥2）中选择最可能的路径到第二状态Sk 在一个时间k。 该方法包括以下步骤：检测在时间k-j和k之间的预定周期j中定义n个可能路径的第一和第二状态Sk-j和Sk的预定组合，并且评估读取信号的可靠性， 周期j，由| Pa-Pb |​​。 Pa和Pb表示周期j中第一和第二状态转换路径的状态转移的概率。 估计第一和第二状态转换路径是由检测到的组合定义的n个可能路径中最可能和最可能的最可能的。

    Integrated circuit monitoring an internal signal converted from an analog input signal
    9.
    发明授权
    Integrated circuit monitoring an internal signal converted from an analog input signal 有权
    集成电路监控从模拟输入信号转换的内部信号

    公开(公告)号：US07584315B2

    公开(公告)日：2009-09-01

    申请号：US10818568

    申请日：2004-04-06

    申请人： Naohiro Kimura ,  Harumitsu Miyashita ,  Takeshi Nakajima ,  Hiromichi Ishibashi ,  Yoshikazu Yamamoto ,  Kohei Nakata

    发明人： Naohiro Kimura ,  Harumitsu Miyashita ,  Takeshi Nakajima ,  Hiromichi Ishibashi ,  Yoshikazu Yamamoto ,  Kohei Nakata

    IPC分类号： G06F13/12 ,  G06F3/00 ,  G06F13/00 ,  G11B7/085

    CPC分类号： G01R31/3177

    摘要： An integrated circuit includes: a signal processor, which receives an input signal and generates a processed signal, representing processing information obtained by subjecting the input signal to predetermined processing, and at least one type of internal signal including internal information obtained during the processing; at least one memory storing the processing information; an interface exchanges signals with an external device; and a controller controlling the signal processor, memory and interface. On receiving a first instruction from the external device through the interface, the controller controls the signal processor and memory such that the processing information is once stored in the memory and then output to the external device via the interface. In response to a second instruction, the controller controls the signal processor and memory such that the internal information is once stored in the memory and then output to the external device via the interface.

    摘要翻译： 集成电路包括：信号处理器，其接收输入信号并产生经处理的信号，表示通过对输入信号进行预定处理而获得的处理信息;以及至少一种内部信号，包括在处理期间获得的内部信息; 存储所述处理信息的至少一个存储器; 接口与外部设备交换信号; 以及控制信号处理器，存储器和接口的控制器。 在通过接口从外部设备接收到第一指令时，控制器控制信号处理器和存储器，使得处理信息曾经存储在存储器中，然后经由接口输出到外部设备。 响应于第二指令，控制器控制信号处理器和存储器，使得内部信息被一次存储在存储器中，然后经由接口输出到外部设备。

    Information reproducing apparatus
    10.
    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。