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    Integrated circuit monitoring an internal signal converted from an analog input signal
    3.
    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。

    Signal evaluation method and signal evaluation apparatus
    5.
    发明授权
    Signal evaluation method and signal evaluation apparatus 有权
    信号评估方法及信号评估装置

    公开(公告)号：US08098557B2

    公开(公告)日：2012-01-17

    申请号：US13034762

    申请日：2011-02-25

    申请人： Harumitsu Miyashita ,  Kohei Nakata ,  Yasumori Hino ,  Naohiro Kimura

    发明人： Harumitsu Miyashita ,  Kohei Nakata ,  Yasumori Hino ,  Naohiro Kimura

    IPC分类号： G11B7/00

    CPC分类号： G11B20/10009 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10111 ,  G11B20/1012 ,  G11B20/10212 ,  G11B20/10277 ,  G11B20/10296 ,  G11B20/10361 ,  G11B20/1037 ,  G11B20/10398 ,  G11B20/10472 ,  G11B20/10481 ,  G11B20/1816 ,  G11B20/182 ,  G11B20/225 ,  G11B2220/2541

    摘要： A signal evaluation method according to the present invention is a method for evaluating a read signal, retrieved from an information recording medium, based on a binarized signal generated from the read signal by a PRML method. The method includes the steps of: detecting the patterns of multiple paths associated with the binarized signal and merging into the same state; getting the ideal value of a correct pattern associated with the binarized signal and that of an erroneous pattern that is similar to, but different from, the correct pattern; calculating the difference between a distance from the ideal value of the correct pattern to the read signal and a distance from that of the erroneous pattern to the read signal; calculating, based on the difference, an expected error rate for each predetermined group of patterns by the PRML method; and calculating a standard deviation that is associated with a total error rate, which is obtained by adding together the error rates of the predetermined groups of patterns, and that is used for evaluating the read signal.

    摘要翻译： 根据本发明的信号评估方法是一种用于根据通过PRML方法从读取信号产生的二值化信号来评估从信息记录介质检索的读取信号的方法。 该方法包括以下步骤：检测与二值化信号相关联的多个路径的模式并合并成相同的状态; 获得与二值化信号相关联的正确模式的理想值以及类似于但不同于正确模式的错误模式的理想值; 计算从正确图案的理想值到读取信号的距离与从错误图案到读取信号的距离之间的差; 基于差异，通过PRML方法计算每个预定组模式的预期误码率; 以及计算与总误差率相关联的标准偏差，其通过将预定组图案的误差率相加并且用于评估读取信号而获得。

    Signal evaluation method and signal evaluation apparatus
    6.
    发明授权
    Signal evaluation method and signal evaluation apparatus 有权
    信号评估方法及信号评估装置

    公开(公告)号：US08068399B2

    公开(公告)日：2011-11-29

    申请号：US12394281

    申请日：2009-02-27

    申请人： Harumitsu Miyashita ,  Kohei Nakata ,  Yasumori Hino ,  Naohiro Kimura

    发明人： Harumitsu Miyashita ,  Kohei Nakata ,  Yasumori Hino ,  Naohiro Kimura

    IPC分类号： G11B5/09

    CPC分类号： G11B20/10009 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10111 ,  G11B20/1012 ,  G11B20/10212 ,  G11B20/10277 ,  G11B20/10296 ,  G11B20/10361 ,  G11B20/1037 ,  G11B20/10398 ,  G11B20/10472 ,  G11B20/10481 ,  G11B20/1816 ,  G11B20/182 ,  G11B20/225 ,  G11B2220/2541

    摘要： A signal evaluation method according to the present invention is a method for evaluating a read signal, retrieved from an information recording medium, based on a binarized signal generated from the read signal by a PRML method. The method includes the steps of: detecting the patterns of multiple paths associated with the binarized signal and merging into the same state; getting the ideal value of a correct pattern associated with the binarized signal and that of an erroneous pattern that is similar to, but different from, the correct pattern; calculating the difference between a distance from the ideal value of the correct pattern to the read signal and a distance from that of the erroneous pattern to the read signal; calculating, based on the difference, an expected error rate for each predetermined group of patterns by the PRML method; and calculating a standard deviation that is associated with a total error rate, which is obtained by adding together the error rates of the predetermined groups of patterns, and that is used for evaluating the read signal.

    摘要翻译： 根据本发明的信号评估方法是一种用于根据通过PRML方法从读取信号产生的二值化信号来评估从信息记录介质检索的读取信号的方法。 该方法包括以下步骤：检测与二值化信号相关联的多个路径的模式并合并成相同的状态; 获得与二值化信号相关联的正确模式的理想值以及类似于但不同于正确模式的错误模式的理想值; 计算从正确图案的理想值到读取信号的距离与从错误图案到读取信号的距离之间的差; 基于差异，通过PRML方法计算每个预定组模式的预期误码率; 以及计算与总误差率相关联的标准偏差，其通过将预定组图案的误差率相加并且用于评估读取信号而获得。

    OPTICAL DISC, OPTICAL DISC DRIVE, OPTICAL DISC RECORDING/REPRODUCING METHOD, AND INTEGRATED CIRCUIT
    8.
    发明申请
    OPTICAL DISC, OPTICAL DISC DRIVE, OPTICAL DISC RECORDING/REPRODUCING METHOD, AND INTEGRATED CIRCUIT 审中-公开
    光盘，光盘驱动器，光盘记录/再现方法和集成电路

    公开(公告)号：US20090175151A1

    公开(公告)日：2009-07-09

    申请号：US12274428

    申请日：2008-11-20

    申请人： Harumitsu Miyashita ,  Kohei Nakata ,  Naohiro Kimura

    发明人： Harumitsu Miyashita ,  Kohei Nakata ,  Naohiro Kimura

    IPC分类号： G11B7/00 ,  G11B7/24

    CPC分类号： G11B20/1217 ,  G11B2020/1267 ,  G11B2020/1279 ,  G11B2220/235 ,  G11B2220/2537

    摘要： An address format for appropriately controlling the recording linear density and the number of information recording layers is provided in order to increase the recording capacity of an information recording medium such as an optical disc or the like in a range in which a necessary S/N ratio can be guaranteed. An optical disc includes an information recording layer having a concentric or spiral track, and has a format for describing a track address, which is pre-recorded on the track or is to be added to data that is to be recorded on the information recording layer. The format includes layer information regarding the information recording layer and address information regarding the track address.

    摘要翻译： 提供了用于适当地控制记录线密度和信息记录层数的地址格式，以便在诸如光盘等的信息记录介质的记录容量在必要的S / N比 可以保证。 光盘包括具有同心或螺旋形轨道的信息记录层，并且具有用于描述轨道地址的格式，其被预先记录在轨道上或被添加到待记录在信息记录层上的数据 。 该格式包括关于信息记录层的层信息和关于轨道地址的地址信息。

    Information recording medium evaluation method, information recording medium, method for manufacturing information recording medium, signal processing method and access control apparatus
    9.
    发明授权
    Information recording medium evaluation method, information recording medium, method for manufacturing information recording medium, signal processing method and access control apparatus 有权
    信息记录介质评估方法，信息记录介质，信息记录介质的制造方法，信号处理方法和访问控制装置

    公开(公告)号：US08254234B2

    公开(公告)日：2012-08-28

    申请号：US13207570

    申请日：2011-08-11

    申请人： Harumitsu Miyashita ,  Kohei Nakata

    发明人： Harumitsu Miyashita ,  Kohei Nakata

    IPC分类号： G11B7/004

    CPC分类号： G11B7/013 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/1012 ,  G11B20/10296 ,  G11B20/10481 ,  G11B2220/216 ,  G11B2220/2541

    摘要： A method for rating an information recording medium according to the present invention includes the steps of: receiving a digital read signal, which has been generated based on an analog read signal representing information that has been read from the information recording medium, and shaping the waveform of the digital read signal; subjecting the shaped digital read signal to maximum likelihood decoding, thereby generating a binarized signal showing a result of the maximum likelihood decoding; and calculating the quality of the digital read signal based on the shaped digital read signal and the binarized signal. If the quality of the read signal is calculated by a PRML method in which a number of zero-cross portions are included in a merging path of a minimum difference metric, the quality is calculated by using only a state transition pattern in which only one zero-cross portion is included in a merging path of a non-minimum difference metric.

    摘要翻译： 根据本发明的用于对信息记录介质进行评级的方法包括以下步骤：接收基于表示从信息记录介质读取的信息的模拟读取信号产生的数字读取信号，并且对波形进行整形 的数字读取信号; 对成形数字读取信号进行最大似然解码，从而生成表示最大似然解码结果的二值化信号; 并根据成形数字读取信号和二值化信号计算数字读取信号的质量。 如果通过PRML方法计算读取信号的质量，其中在最小差值度量的合并路径中包括多个零交叉部分，则仅通过仅使用一个零的状态转换模式来计算质量 - 交叉部分被包括在非最小差值度量的合并路径中。

    CLOCK SIGNAL GENERATION DEVICE
    10.
    发明申请
    CLOCK SIGNAL GENERATION DEVICE 审中-公开
    时钟信号发生装置

    公开(公告)号：US20100149940A1

    公开(公告)日：2010-06-17

    申请号：US12067902

    申请日：2006-09-27

    申请人： Kohei Nakata ,  Harumitsu Miyashita ,  Takeshi Nakajima

    发明人： Kohei Nakata ,  Harumitsu Miyashita ,  Takeshi Nakajima

    IPC分类号： G11B20/18

    CPC分类号： H03L7/087 ,  G11B20/10009 ,  G11B20/10027 ,  G11B20/10037 ,  G11B20/10046 ,  G11B20/10212 ,  G11B20/10222 ,  G11B20/1217 ,  G11B20/14 ,  G11B2020/1232 ,  G11B2020/1238 ,  G11B2020/1239 ,  G11B2020/1268 ,  G11B2020/1274 ,  G11B2020/1287 ,  H03L7/07 ,  H03L7/091

    摘要： A clock signal generator according to the present invention includes: a wobble phase error detecting section for detecting a wobble phase error that is a difference in phase between a wobble signal, representing a wobbled shape of a track on an optical disk medium, and a clock signal; a data phase error detecting section for detecting a data phase error that is a difference in phase between a data signal, representing data that has been written on the optical disk medium, and the clock signal; a frequency control section for generating a frequency control signal to control the frequency of the clock signal based on the wobble phase error and the data phase error; and a clock oscillation section for generating the clock signal with its frequency controlled in accordance with the frequency control signal.

    摘要翻译： 根据本发明的时钟信号发生器包括：摆动相位误差检测部分，用于检测作为表示光盘介质上的轨道的摆动形状的摆动信号与时钟之间的相位差的摆动相位误差 信号; 数据相位误差检测部分，用于检测表示已经写在光盘介质上的数据的数据信号与时钟信号之间的相位差的数据相位误差; 频率控制部分，用于基于摆动相位误差和数据相位误差产生频率控制信号以控制时钟信号的频率; 以及时钟振荡部分，用于产生其频率根据频率控制信号而被控制的时钟信号。