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1. 发明授权

US08098557B2 Signal evaluation method and signal evaluation apparatus 有权
标题翻译：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。

2. 发明授权

US08068399B2 Signal evaluation method and signal evaluation apparatus 有权
标题翻译：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。

3. 发明授权

US08514682B2 Reproduction signal evaluation method, reproduction signal evaluation unit, and optical disk device adopting the same 失效
标题翻译：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：US08514682B2
公开(公告)日：2013-08-20
申请号：US13434995
申请日：2012-03-30
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 , G11B20/10027 , G11B20/10046 , G11B20/10055 , G11B20/1012 , G11B20/10212 , G11B20/10277 , G11B20/10296 , G11B20/10361 , G11B20/1037 , G11B20/10398 , G11B20/10425 , G11B20/10472 , G11B20/10481 , G11B20/1816 , G11B20/182 , G11B20/22 , G11B2220/2541
摘要： A reproduction signal evaluation method evaluates the quality of a reproduction signal reproduced from an information recording medium based on a binary signal generated from the reproduction signal using a PRML signal processing system. A pattern extraction step extracts, from the binary signal, a specific state transition pattern which has the possibility of causing a bit error; a step computes a differential metric based on the binary signal; an extraction step extracts the differential metric which is not greater than a predetermined signal processing threshold; a step determines a mean value of the differential metrics which are not greater than the signal processing threshold and extracted in the extraction step; a standard deviation computing step determines a standard deviation which corresponds to an error rate predicted from the mean value; and an evaluation step evaluates a quality of the reproduction signal using the standard deviation.
摘要翻译：再现信号评估方法基于使用PRML信号处理系统从再现信号生成的二进制信号来评估从信息记录介质再现的再现信号的质量。模式提取步骤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; 步骤基于二进制信号计算差分度量; 提取步骤提取不大于预定信号处理阈值的差分度量; 步骤确定不大于信号处理阈值并在提取步骤中提取的差分度量的平均值; 标准偏差计算步骤确定与从平均值预测的误差率对应的标准偏差; 并且评估步骤使用标准偏差来评估再现信号的质量。

4. 发明授权

US08179760B2 Reproduction signal evaluation method, information recording medium, reproduction apparatus and recording apparatus 有权
标题翻译：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。

5. 发明授权

US08085641B2 Reproduced signal evaluation method and write adjustment method 有权
标题翻译：再现信号评估方法和写入调整方法
公开(公告)号：US08085641B2
公开(公告)日：2011-12-27
申请号：US12836743
申请日：2010-07-15
申请人： Hiroyuki Minemura , Takahiro Kurokawa , Junya Shiraishi , Shoei Kobayashi , Harumitsu Miyashita , Yasumori Hino
发明人： Hiroyuki Minemura , Takahiro Kurokawa , Junya Shiraishi , Shoei Kobayashi , Harumitsu Miyashita , Yasumori Hino
IPC分类号： G11B7/00
CPC分类号： G11B20/10009 , G11B7/00456 , G11B7/00458 , G11B20/10046 , G11B20/1012 , G11B20/10481 , G11B2007/0013 , G11B2220/2541
摘要： The present invention aims to provide a reproduced signal evaluation method and a write adjustment method for offering a Blu-ray disc having a large storage capacity with excellent media compatibility. An evaluation index L-SEAT is calculated through signed addition using a Euclidean distance difference calculated from at least one of target signals in which a focused edge is shifted to the right and left, and the quality of the reproduced signal is evaluated based on the evaluation index. Write condition adjustment using the index enables write adjustment not depending on SNR and achieving high adjustment accuracy.
摘要翻译：本发明的目的在于提供一种用于提供具有良好的媒体兼容性的具有大存储容量的蓝光盘的再现信号评估方法和写入调整方法。通过使用从聚焦边缘向左右移动的目标信号中的至少一个计算出的欧几里德距离差，通过带符号相加来计算评价指标L-SEAT，并且基于评估来评估再现信号的质量指数。使用该索引的写入条件调整可以使写入调整不依赖于SNR并实现高调整精度。

6. 发明申请

US20080074969A1 Recording Condition Optimizing Method, Information Recording/Reproducing Device, And Integrated Circuit Device 审中-公开
标题翻译：记录条件优化方法，信息记录/再现装置和集成电路装置
公开(公告)号：US20080074969A1
公开(公告)日：2008-03-27
申请号：US11631937
申请日：2005-06-23
申请人： Harumitsu Miyashita , Yasumori Hino , Tetsuya Shihara
发明人： Harumitsu Miyashita , Yasumori Hino , Tetsuya Shihara
IPC分类号： G11B15/52
CPC分类号： G11B20/10009 , G11B7/00456 , G11B7/1267 , G11B20/10046 , G11B20/10481
摘要： It is an object to minimize the effect of the reproduction transmission path characteristics or optical characteristics of an optical head, and more suitably adjust recording conditions. The recording condition optimization method of the present invention involves optimizing recording conditions in the recording of information to an optical disk (100), comprising a recording step (1103) of recording a recording pattern including a plurality of recording marks to the optical disk using specific recording conditions, a reproduction step (1102) of reproducing the recording pattern recorded in the recording step (1103), an equalization characteristics setting step (1101) of setting waveform equalization characteristics according to the recording pattern, an equalization step (1105) of using the waveform equalization characteristics set in the equalization characteristics setting step (1101) to equalize the waveform of the reproduction signal reproduced in the reproduction step (1102), and an adjustment step (1104) of using the reproduction signal whose waveform has been equalized in the equalization step (1105) to adjust the recording conditions.
摘要翻译：本发明的目的是最小化光头的再现传输路径特性或光学特性的影响，并且更适当地调节记录条件。本发明的记录条件优化方法涉及将信息记录中的记录条件优化到光盘（100），其包括使用特定的记录步骤（1103）将包括多个记录标记的记录图案记录到光盘记录条件，再现记录在记录步骤（1103）中的记录模式的再现步骤（1102），根据记录模式设置波形均衡特性的均衡特性设置步骤（1101），使用均衡特性设定步骤（1101）中设定的波形均衡特性，用于均衡再现步骤（1102）中再现的再现信号的波形，以及使用其波形已被均衡的再现信号的调整步骤（1104）均衡步骤（1105），以调节记录条件。

7. 发明申请

US20050128911A1 Recording/reproduction apparatus, recording/reproduction method, program, and recording power adjustment apparatus 有权
标题翻译：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。

8. 发明授权

US08565054B2 Optical recording medium, optical recording medium manufacturing method, reproduction signal processing method and evaluation method 有权
标题翻译：光记录介质，光记录介质的制造方法，再现信号处理方法及评价方法
公开(公告)号：US08565054B2
公开(公告)日：2013-10-22
申请号：US12376544
申请日：2007-11-30
申请人： Harumitsu Miyashita , Yasumori Hino , Mamoru Shoji , Kiyotaka Itou
发明人： Harumitsu Miyashita , Yasumori Hino , Mamoru Shoji , Kiyotaka Itou
IPC分类号： G11B5/09 , G11B7/24 , G11B20/18 , G11B3/70 , G11B3/74
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10111 , G11B20/10481 , G11B2020/122 , G11B2220/2541 , G11B2220/2562
摘要： An optical head 12 reproduces information recorded on an optical disc 11, a BCA detector 21 and a medium discriminating circuit 22 acquire waveform distortion information for specifying a waveform distortion of a reproduction signal reproduced by the optical head 12, and a variable waveform equalizer 16 changes a parameter used in a distortion reduction processing for reducing the waveform distortion of the reproduction signal based on the waveform distortion information.
摘要翻译：光头12再现记录在光盘11上的信息，BCA检测器21和介质鉴别电路22获取用于指定由光头12再现的再现信号的波形失真的波形失真信息，并且可变波形均衡器16改变用于基于波形失真信息减少再现信号的波形失真的失真减小处理中使用的参数。

9. 发明授权

US08000197B2 Recording/reproducing device, recording condition adjusting device and recording/reproducing method 失效
标题翻译：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。

10. 发明申请

US20090034381A1 RECORDING/REPRODUCING DEVICE, RECORDING CONDITION ADJUSTING DEVICE AND RECORDING/REPRODUCING METHOD 失效
标题翻译：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。

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