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    Recording/reproduction apparatus, recording/reproduction method, program, and recording power adjustment apparatus
    11.
    发明申请
    Recording/reproduction apparatus, recording/reproduction method, program, and recording power adjustment apparatus 有权
    记录/再现装置，记录/再现方法，程序和记录功率调节装置

    公开(公告)号：US20050128911A1

    公开(公告)日：2005-06-16

    申请号：US10981869

    申请日：2004-11-05

    申请人： Harumitsu Miyashita ,  Takeshi Nakajima ,  Mamoru Shoji ,  Yasumori Hino

    发明人： Harumitsu Miyashita ,  Takeshi Nakajima ,  Mamoru Shoji ,  Yasumori Hino

    IPC分类号： G11B7/004 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/007 ,  G11B7/125 ,  G11B11/00 ,  G11B5/09

    CPC分类号： G11B7/1267 ,  G11B7/0053 ,  G11B7/0062 ,  G11B7/00736

    摘要： A recording/reproduction apparatus, comprising a first recording section for recording test information onto a medium using at least one recording power, a reproduction section for reproducing at least one test signal indicating the test information from the medium, and a second recording section for recording information onto the medium using one of the at least one recording power. The reproduction section comprises a decoding section for performing maximum likelihood decoding of the at least one test signal and generating at least one binary signal indicating a result of the maximum likelihood decoding, a calculation section for calculating a reliability of the result of the maximum likelihood decoding based on the at least one test signal and the at least one binary signal, and an adjustment section for adjusting a recording power for recording the information onto the medium to the one recording power based on the reliability.

    摘要翻译： 一种记录/再现装置，包括用于使用至少一个记录功率将测试信息记录在介质上的第一记录部分，用于从介质再现指示测试信息的至少一个测试信号的再现部分和用于记录的第二记录部分 使用所述至少一个记录功率之一将信息传送到介质上。 再现部分包括：解码部分，用于对所述至少一个测试信号执行最大似然解码，并产生指示最大似然解码结果的至少一个二进制信号;计算部分，用于计算最大似然解码结果的可靠性 基于所述至少一个测试信号和所述至少一个二进制信号，以及调整部分，用于基于所述可靠性调整用于将所述信息记录到所述介质上的记录功率与所述一个记录功率。

    REPRODUCTION SIGNAL EVALUATION METHOD, REPRODUCTION SIGNAL EVALUATION UNIT, AND OPTICAL DISK DEVICE ADOPTING THE SAME
    14.
    发明申请
    REPRODUCTION SIGNAL EVALUATION METHOD, REPRODUCTION SIGNAL EVALUATION UNIT, AND OPTICAL DISK DEVICE ADOPTING THE SAME 有权
    生殖信号评估方法，生殖信号评估单元和采用该方法的光盘装置

    公开(公告)号：US20100214895A1

    公开(公告)日：2010-08-26

    申请号：US12698284

    申请日：2010-02-02

    申请人： Harumitsu Miyashita ,  Yasumori Hino ,  Junya Shiraishi ,  Shoei Kobayashi

    发明人： Harumitsu Miyashita ,  Yasumori Hino ,  Junya Shiraishi ,  Shoei Kobayashi

    IPC分类号： G11B20/18

    CPC分类号： G11B20/10009 ,  G11B20/1012 ,  G11B20/10481 ,  G11B20/1816 ,  G11B2220/2537

    摘要： A reproduction signal evaluation unit has: a pattern detection section for extracting, from a binary signal, a specific state transition pattern which has a possibility of causing a bit error; a differential metric computing section for computing a differential metric based on the binary signal of the extracted state transition pattern; an error computing section for computing an error rate predicted based on an integration value that is integrated by an integration section, a count value that is counted by a pattern count section, an integration value that is integrated by another integration section, and a count value that is counted by another pattern count section, and a standard deviation computing section for computing a standard deviation based on the computed error rate.

    摘要翻译： 再现信号评估单元具有：模式检测部分，用于从二进制信号中提取具有引起位错误的可能性的特定状态转换模式; 差分度量计算部分，用于基于所提取的状态转变模式的二进制信号来计算差分度量; 用于计算基于由积分部分积分的积分值，由图案计数部分计数的计数值，由另一积分部分积分的积分值和计数值的误差率的误差计算部分 其由另一模式计数部分计数，以及标准偏差计算部分，用于基于计算出的错误率来计算标准偏差。

    Jitter detection apparatus and jitter detection method
    16.
    发明授权
    Jitter detection apparatus and jitter detection method 失效
    抖动检测装置和抖动检测方法

    公开(公告)号：US07120102B2

    公开(公告)日：2006-10-10

    申请号：US10675384

    申请日：2003-09-30

    申请人： Naohiro Kimura ,  Harumitsu Miyashita ,  Takeshi Nakajima ,  Tetsuya Shihara

    发明人： Naohiro Kimura ,  Harumitsu Miyashita ,  Takeshi Nakajima ,  Tetsuya Shihara

    IPC分类号： G11B7/00

    CPC分类号： G11B20/10009 ,  G11B7/0037 ,  G11B7/005

    摘要： A jitter detection apparatus includes an A/D conversion section for converting an input analog signal into a plurality of discrete multiple value digital signals; a binarization section for performing binarization of the plurality of multiple value digital signals to generate a binary signal; a jitter calculation section for calculating a jitter amount based on an error between a value of a prescribed multiple value digital signal sampled at a time which is substantially the same as a time when the value of the binary signal is changed and a prescribed threshold value; a pattern detection section for detecting patterns of the binary signal before and after the time when the prescribed multiple value digital signal is sampled; and a correction section for correcting the jitter amount based on the detected pattern.

    摘要翻译： 抖动检测装置包括用于将输入的模拟信号转换为多个离散多值数字信号的A / D转换部分; 二进制化部分，用于执行所述多个多值数字信号的二值化以产生二进制信号; 抖动计算部分，用于基于与二进制信号的值改变时的时间基本相同的规定的多值数字信号的值与规定的阈值之间的误差来计算抖动量; 模式检测部分，用于检测在规定的多值数字信号被采样的时间之前和之后的二进制信号的模式; 以及校正部分，用于基于检测到的图案校正抖动量。

    Reproduction signal evaluation method, reproduction signal evaluation unit, and optical disk device adopting the same
    17.
    发明授权
    Reproduction signal evaluation method, reproduction signal evaluation unit, and optical disk device adopting the same 有权
    再现信号评估方法，再现信号评估单元和采用该方法的光盘装置

    公开(公告)号：US08248902B2

    公开(公告)日：2012-08-21

    申请号：US12698284

    申请日：2010-02-02

    申请人： Harumitsu Miyashita ,  Yasumori Hino ,  Junya Shiraishi ,  Shoei Kobayashi

    发明人： Harumitsu Miyashita ,  Yasumori Hino ,  Junya Shiraishi ,  Shoei Kobayashi

    IPC分类号： G11B7/00

    CPC分类号： G11B20/10009 ,  G11B20/1012 ,  G11B20/10481 ,  G11B20/1816 ,  G11B2220/2537

    摘要： A reproduction signal evaluation unit includes a pattern detection section for extracting, from a binary signal, a specific state transition pattern which has a possibility of causing a bit error; a differential metric computing section for computing a differential metric based on the binary signal of the extracted state transition pattern; an error computing section for computing an error rate predicted based on an integration value that is integrated by an integration section, a count value that is counted by a pattern count section, an integration value that is integrated by another integration section, and a count value that is counted by another pattern count section, and a standard deviation computing section for computing a standard deviation based on the computed error rate.

    摘要翻译： 再现信号评估单元包括：模式检测部分，用于从二进制信号中提取具有引起位错误的可能性的特定状态转换模式; 差分度量计算部分，用于基于所提取的状态转变模式的二进制信号来计算差分度量; 用于计算基于由积分部分积分的积分值，由图案计数部分计数的计数值，由另一积分部分积分的积分值和计数值的误差率的误差计算部分 其由另一模式计数部分计数，以及标准偏差计算部分，用于基于计算出的错误率来计算标准偏差。

    REPRODUCED SIGNAL EVALUATING METHOD, INFORMATION RECORDING MEDIUM, REPRODUCING DEVICE, AND RECORDING DEVICE
    18.
    发明申请
    REPRODUCED SIGNAL EVALUATING METHOD, INFORMATION RECORDING MEDIUM, REPRODUCING DEVICE, AND RECORDING DEVICE 有权
    再现的信号评估方法，信息记录介质，再现装置和记录装置

    公开(公告)号：US20100302925A1

    公开(公告)日：2010-12-02

    申请号：US12745297

    申请日：2009-09-29

    申请人： Kiyotaka Ito ,  Yasumori Hino ,  Harumitsu Miyashita ,  Isao Kobayashi

    发明人： Kiyotaka Ito ,  Yasumori Hino ,  Harumitsu Miyashita ,  Isao Kobayashi

    IPC分类号： G11B27/36

    CPC分类号： G11B20/1403 ,  G11B7/0037 ,  G11B7/00458 ,  G11B7/005 ,  G11B7/24038 ,  G11B20/10009 ,  G11B20/10055 ,  G11B20/1012 ,  G11B20/10287 ,  G11B20/10296 ,  G11B20/10407 ,  G11B20/10481 ,  G11B20/1049 ,  G11B20/1816 ,  G11B2007/0013 ,  G11B2220/235 ,  G11B2220/2541

    摘要： A reproduction signal evaluation method according to the present invention includes a step of generating a binary signal from an information recording medium on which a data sequence including marks and spaces in combination is recordable, using a PRML signal processing method from a signal obtained by reproducing the data sequence; and a differential calculation step of calculating a differential metric using a first state transition path having a maximum likelihood and a second state transition path having a second maximum likelihood, and a reproduction signal, the first state transition path and the second state transition path being obtained based on the binary signal. In a pattern including a shortest mark and a shortest space adjacent before or after the shortest mark, a shift amount of an edge of the shortest mark is obtained from a differential metric calculated regarding one of a first pattern in which a space adjacent to the shortest mark and not adjacent to the shortest space is longer than the shortest space; and a second pattern in which a mark adjacent to the shortest space and not adjacent to the shortest mark is longer than the shortest mark.

    摘要翻译： 根据本发明的再现信号评估方法包括从信息记录介质生成二进制信号的步骤，在该信息记录介质上，包括组合的记号和空格的数据序列可记录，使用PRML信号处理方法从通过再现 数据序列; 以及差分计算步骤，使用具有最大似然的第一状态转移路径和具有第二最大似然度的第二状态转移路径以及再现信号来计算差分度量，获得第一状态转换路径和第二状态转换路径 基于二进制信号。 在包括最短标记和在最短标记之前或之后相邻的最短空格的图案中，从针对与最短标记相邻的空格的第一图案之一计算的差分度量获得最短标记的边缘的偏移量 标记与不相邻的最短空间长于最短空间; 以及第二图案，其中与最短空间相邻并且不与最短标记相邻的标记比最短标记长。

    Recording/reproduction apparatus which adjusts recording power based on a partial response maximum likelihood (PRML) technique
    19.
    发明授权
    Recording/reproduction apparatus which adjusts recording power based on a partial response maximum likelihood (PRML) technique 有权
    基于部分响应最大似然（PRML）技术调节记录功率的记录/再现装置

    公开(公告)号：US07646686B2

    公开(公告)日：2010-01-12

    申请号：US10981869

    申请日：2004-11-05

    申请人： Harumitsu Miyashita ,  Takeshi Nakajima ,  Mamoru Shoji ,  Yasumori Hino

    发明人： Harumitsu Miyashita ,  Takeshi Nakajima ,  Mamoru Shoji ,  Yasumori Hino

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1267 ,  G11B7/0053 ,  G11B7/0062 ,  G11B7/00736

    摘要： A recording/reproduction apparatus, comprising a first recording section for recording test information onto a medium using at least one recording power, a reproduction section for reproducing at least one test signal indicating the test information from the medium, and a second recording section for recording information onto the medium using one of the at least one recording power. The reproduction section comprises a decoding section for performing maximum likelihood decoding of the at least one test signal and generating at least one binary signal indicating a result of the maximum likelihood decoding, a calculation section for calculating a reliability of the result of the maximum likelihood decoding based on the at least one test signal and the at least one binary signal, and an adjustment section for adjusting a recording power for recording the information onto the medium to the one recording power based on the reliability.

    摘要翻译： 一种记录/再现装置，包括用于使用至少一个记录功率将测试信息记录在介质上的第一记录部分，用于从介质再现指示测试信息的至少一个测试信号的再现部分和用于记录的第二记录部分 使用所述至少一个记录功率之一将信息传送到介质上。 再现部分包括：解码部分，用于对所述至少一个测试信号执行最大似然解码，并产生指示最大似然解码结果的至少一个二进制信号;计算部分，用于计算最大似然解码结果的可靠性 基于所述至少一个测试信号和所述至少一个二进制信号，以及调整部分，用于基于所述可靠性调整用于将所述信息记录到所述介质上的记录功率与所述一个记录功率。