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    Reproduction signal evaluation method, information recording medium, reproduction apparatus and recording apparatus
    3.
    发明授权
    Reproduction signal evaluation method, information recording medium, reproduction apparatus and recording apparatus 有权
    再现信号评估方法，信息记录介质，再现装置和记录装置

    公开(公告)号：US08179760B2

    公开(公告)日：2012-05-15

    申请号：US12573200

    申请日：2009-10-05

    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： G11B5/09 ,  G11B20/10 ,  G11B27/36 ,  G11B7/0045

    CPC分类号： G11B7/0037 ,  G11B7/005 ,  G11B7/24038 ,  G11B20/10009 ,  G11B20/10055 ,  G11B20/10296 ,  G11B20/1816 ,  G11B2007/0013

    摘要： A reproduction signal evaluation method according to the present invention relates to adjustment of an edge portion between a shortest mark and a shortest space in a data sequence including marks and spaces in combination that is recordable on an information recording medium. 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涉及在包括可记录在信息记录介质上的组合的数据序列中的最短标记和最短空间之间的边缘部分的调整。 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。

    REPRODUCED SIGNAL EVALUATING METHOD, INFORMATION RECORDING MEDIUM, REPRODUCING DEVICE, AND RECORDING DEVICE
    4.
    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/reproducing device, recording condition adjusting device and recording/reproducing method
    5.
    发明授权
    Recording/reproducing device, recording condition adjusting device and recording/reproducing method 失效
    记录/再现装置，记录条件调节装置和记录/再现方法

    公开(公告)号：US08000197B2

    公开(公告)日：2011-08-16

    申请号：US11995549

    申请日：2006-07-18

    申请人： Mamoru Shoji ,  Yasumori Hino ,  Harumitsu Miyashita ,  Isao Kobayashi

    发明人： Mamoru Shoji ,  Yasumori Hino ,  Harumitsu Miyashita ,  Isao Kobayashi

    IPC分类号： G11B7/125

    CPC分类号： G11B7/1267 ,  G11B7/00456 ,  G11B7/0062

    摘要： A calculation of a reliability value |Pa−Pb|−Pstd, representing represents a maximum likelihood decoding result on a portion which corresponds to a start or termination edge of a recording mark and has a high probability of error occurrence by a maximum likelihood decoding method, is performed on each combination of a predetermined mark length and a space length immediately before the mark and each combination of the mark length and a space length immediately after the mark. Based on the calculation result, a recording parameter is optimized, and recording reflecting the optimized recording parameter is performed.

    摘要翻译： 代表对应于记录标记的开始或终止边缘的部分并且通过最大似然解码方法具有高错误发生概率的最大似然解码结果的可靠性值| Pa-Pb |​​ -Pstd的计算， 在标记之前的预定标记长度和间隔长度的每个组合以及标记之后的标记长度和间隔长度的每个组合的每个组合上执行。 基于计算结果，优化记录参数，并且执行反映优化记录参数的记录。

    RECORDING/REPRODUCING DEVICE, RECORDING CONDITION ADJUSTING DEVICE AND RECORDING/REPRODUCING METHOD
    6.
    发明申请
    RECORDING/REPRODUCING DEVICE, RECORDING CONDITION ADJUSTING DEVICE AND RECORDING/REPRODUCING METHOD 失效
    记录/再现装置，记录条件调节装置和记录/再现方法

    公开(公告)号：US20090034381A1

    公开(公告)日：2009-02-05

    申请号：US11995549

    申请日：2006-07-18

    申请人： Mamoru Shoji ,  Yasumori Hino ,  Harumitsu Miyashita ,  Isao Kobayashi

    发明人： Mamoru Shoji ,  Yasumori Hino ,  Harumitsu Miyashita ,  Isao Kobayashi

    IPC分类号： G11B27/36

    CPC分类号： G11B7/1267 ,  G11B7/00456 ,  G11B7/0062

    摘要： A calculation of a reliability value |Pa−Pb|−Pstd, representing represents a maximum likelihood decoding result on a portion which corresponds to a start or termination edge of a recording mark and has a high probability of error occurrence by a maximum likelihood decoding method, is performed on each combination of a predetermined mark length and a space length immediately before the mark and each combination of the mark length and a space length immediately after the mark. Based on the calculation result, a recording parameter is optimized, and recording reflecting the optimized recording parameter is performed.

    摘要翻译： 代表对应于记录标记的开始或终止边缘的部分并且通过最大似然解码方法具有高错误发生概率的最大似然解码结果的可靠性值| Pa-Pb |​​ -Pstd的计算， 在标记之前的预定标记长度和间隔长度的每个组合以及标记之后的标记长度和间隔长度的每个组合的每个组合上执行。 基于计算结果，优化记录参数，并且执行反映优化记录参数的记录。

    Optical Disc Recording Pulse Control Method, and Control Device and Optical Disc Device Employed Therein
    8.
    发明申请
    Optical Disc Recording Pulse Control Method, and Control Device and Optical Disc Device Employed Therein 审中-公开
    光盘记录脉冲控制方法，以及其中使用的控制装置和光盘装置

    公开(公告)号：US20080205231A1

    公开(公告)日：2008-08-28

    申请号：US11632861

    申请日：2005-07-21

    申请人： Harumitsu Miyashita ,  Tetsuya Shihara ,  Yasumori Hino

    发明人： Harumitsu Miyashita ,  Tetsuya Shihara ,  Yasumori Hino

    IPC分类号： G11B20/18 ,  G11B7/0045

    CPC分类号： G11B7/1267 ,  G11B7/00456 ,  G11B7/0062

    摘要： There are problems that recording degradation happens, and an error occurs in reproduction unless appropriate recording pulse conditions are determined. A recording pulse controlling method according to the present invention is a recording pulse controlling method for adjusting recording pulses for recording information on a writable optical disc, which includes a mark length adjustment step and a mark position adjustment step. The mark length adjustment step is a step for adjusting a recording mark length adjustment parameter, and the recording mark length adjustment parameter is adjusted to have a value for forming a recording mark having a length closest to a predetermined recording mark length. The mark position adjustment step is a step for adjusting a recording mark position adjustment parameter after the mark length adjustment step, and the recording mark position adjustment parameter is adjusted to have a value for forming a recording mark at a position closest to a predetermined recording mark position.

    摘要翻译： 存在记录劣化发生的问题，并且除非确定适当的记录脉冲条件，否则在再现中发生错误。 根据本发明的记录脉冲控制方法是一种用于在包括标记长度调节步骤和标记位置调整步骤的可写入光盘上调节用于记录信息的记录脉冲的记录脉冲控制方法。 标记长度调整步骤是用于调整记录标记长度调整参数的步骤，并且将记录标记长度调节参数调整为具有用于形成具有最接近预定记录标记长度的长度的记录标记的值。 标记位置调整步骤是在标记长度调整步骤之后调整记录标记位置调整参数的步骤，并且将记录标记位置调节参数调节为具有在最接近预定记录标记的位置处形成记录标记的值 位置。