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1. 发明申请

US20100002556A1 REPRODUCTION SIGNAL EVALUATION METHOD, REPRODUCTION SIGNAL EVALUATION UNIT, AND OPTICAL DISK DEVICE ADOPTING THE SAME 失效
标题翻译：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：US20100002556A1
公开(公告)日：2010-01-07
申请号：US12496096
申请日：2009-07-01
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 for evaluating 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, includes: a pattern extraction step of extracting, from the binary signal, a specific state transition pattern which has the possibility of causing a bit error; a step of computing a differential metric based on the binary signal; an extraction step of extracting the differential metric which is not greater than a predetermined signal processing threshold; a step of determining 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 of determining a standard deviation which corresponds to an error rate predicted from the mean value; and an evaluation step of evaluating a quality of the reproduction signal using the standard deviation.
摘要翻译：一种用于基于使用PRML信号处理系统从再现信号产生的二进制信号从信息记录介质再现的再现信号的质量评估的再现信号评估方法，包括：模式提取步骤，从二进制信号中提取具有导致位错误的可能性的特定状态转换模式; 基于二进制信号计算差分度量的步骤; 提取步骤，提取不大于预定信号处理阈值的差分度量; 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的步骤; 标准偏差计算步骤，用于确定与从所述平均值预测的误差率对应的标准偏差; 以及评估步骤，使用标准偏差来评估再现信号的质量。

2. 发明申请

US20100097908A1 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：US20100097908A1
公开(公告)日：2010-04-22
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： G11B27/36
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 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。

3. 发明申请

US20100085851A1 METHOD AND APPARATUS FOR EVALUATING INFORMATION RECORDING MEDIUM 审中-公开
标题翻译：用于评估信息记录介质的方法和装置
公开(公告)号：US20100085851A1
公开(公告)日：2010-04-08
申请号：US12244231
申请日：2008-10-02
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： G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/1012 , G11B20/10212 , G11B20/10296 , G11B20/10481 , G11B20/1816 , G11B20/182 , G11B2220/2537 , G11B2220/2541
摘要： The present invention has an object of evaluating a recording and reproduction signal quality of a high density information recording medium by providing an index representing, in a detection signal including a plurality of pieces of edge shift information, how each edge is shifted. A signal evaluation method, usable for an information recording medium having a data sequence including a mark and a space located alternately, for generating a binary signal from a signal obtained by reproducing the data sequence using a PRML signal processing method and evaluating a likelihood of the binary signal, includes a differential metric calculation step of calculating, from the binary signal, a differential metric which is a difference of a reproduction signal from a first state transition matrix having a maximum likelihood and a second state transition matrix having a second maximum likelihood; and a step of classifying the differential metric to any of a plurality of data patterns each including at least one mark and at least one space. The data pattern classification to any of the plurality of data patterns is performed using a combination of a length of a first mark included in the data sequence and a length of a first space adjacently located immediately previous or immediately subsequent to the first mark, and is further performed using a length of a second mark which is not adjacent to the first mark and located adjacent to the first space; and thus a reproduction signal quality of the information recording medium is evaluated.
摘要翻译：本发明的目的是通过提供一种在包括多个边缘移位信息的检测信号中表示每个边缘如何偏移的指标来评估高密度信息记录介质的记录和再现信号质量。一种信号评估方法，可用于具有包括标记和交替定位的空间的数据序列的信息记录介质，用于通过使用PRML信号处理方法再现数据序列获得的信号产生二进制信号，并评估二进制信号包括差分量度计算步骤，从二进制信号计算作为具有最大似然的第一状态转移矩阵的再现信号和具有第二最大似然的第二状态转移矩阵的差的差分度量; 以及将差分度量分类为多个数据模式中的每一个包括至少一个标记和至少一个空间的步骤。使用数据序列中包括的第一标记的长度与紧邻在第一标记之前或之后紧邻的第一空间的长度的组合来执行对多个数据模式中的任何数据模式的数据模式分类，并且是使用与第一标记不相邻且位于第一空间附近的第二标记的长度进一步执行; 因此评估信息记录介质的再现信号质量。

4. 发明申请

US20110149704A1 SIGNAL EVALUATION METHOD AND SIGNAL EVALUATION APPARATUS 有权
标题翻译：信号评估方法和信号评估装置
公开(公告)号：US20110149704A1
公开(公告)日：2011-06-23
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： G11B20/18 , G11B20/12 , G11B7/24 , 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。

5. 发明申请

US20100054097A1 RECORDING/REPRODUCTION APPARATUS, RECORDING/REPRODUCTION METHOD, PROGRAM, AND RECORDING POWER ADJUSTMENT APPARATUS 有权
标题翻译：记录/复制装置，记录/再现方法，程序和记录功率调节装置
公开(公告)号：US20100054097A1
公开(公告)日：2010-03-04
申请号：US12613833
申请日：2009-11-06
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： G11B7/12
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。

6. 发明申请

US20090225639A1 SIGNAL EVALUATION METHOD AND SIGNAL EVALUATION APPARATUS 有权
标题翻译：信号评估方法和信号评估装置
公开(公告)号：US20090225639A1
公开(公告)日：2009-09-10
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： 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。

7. 发明申请

US20090154315A1 INFORMATION RECORDING MEDIUM, RECORDING METHOD, RECORDING APPARATUS AND INTEGRATED CIRCUIT 审中-公开
标题翻译：信息记录介质，记录方法，记录装置和集成电路
公开(公告)号：US20090154315A1
公开(公告)日：2009-06-18
申请号：US12327119
申请日：2008-12-03
申请人： Harumitsu MIYASHITA , Yasumori HINO , Atsushi NAKAMURA , Mamoru SHOJI , Kanji OHNISHI
发明人： Harumitsu MIYASHITA , Yasumori HINO , Atsushi NAKAMURA , Mamoru SHOJI , Kanji OHNISHI
IPC分类号： G11B7/00
CPC分类号： G11B7/00736 , G11B7/0062 , G11B7/1267
摘要： An information storage medium according to the present invention is adapted for multiple different writing speeds and stores in advance writing conditions associated with each of the multiple writing speeds. The writing conditions include: a recording-power-related parameter and a write-waveform-related parameter, which are associated with each particular writing speed to perform a write operation at the particular writing speed; and another recording-power-related parameter for performing a write operation at a different writing speed other than the particular one using the recording-power-related parameter for performing the write operation at the particular writing speed.
摘要翻译：根据本发明的信息存储介质适用于多种不同的写入速度，并且预先存储与多个写入速度中的每一个相关联的写入条件。写入条件包括：记录功率相关参数和与写入波形相关的参数，其与每个特定写入速度相关联，以特定写入速度执行写入操作; 以及另一个记录功率相关参数，用于使用与特定写入速度执行写入操作的记录功率相关参数以不同于特定写入速度的不同写入速度执行写入操作。

8. 发明申请

US20110292780A1 INFORMATION RECORDING MEDIUM EVALUATION METHOD, INFORMATION RECORDING MEDIUM, METHOD FOR MANUFACTURING INFORMATION RECORDING MEDIUM, SIGNAL PROCESSING METHOD AND ACCESS CONTROL APPARATUS 有权
公开(公告)号：US20110292780A1
公开(公告)日：2011-12-01
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： G11B27/36 , B32B3/02 , B29D17/00 , G11B7/24
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.

9. 发明申请

US20080165651A1 RECORDING CONTROL APPARATUS, RECORDING AND REPRODUCTION APPARATUS, AND RECORDING CONTROL METHOD 有权
标题翻译：记录控制装置，记录和再现装置以及记录控制方法
公开(公告)号：US20080165651A1
公开(公告)日：2008-07-10
申请号：US12046025
申请日：2008-03-11
申请人： Harumitsu MIYASHITA , Takeshi Nakajima , Naohiro Kimura
发明人： Harumitsu MIYASHITA , Takeshi Nakajima , Naohiro Kimura
IPC分类号： G11B27/36 , G11B20/10
CPC分类号： G11B7/0062 , G11B7/00456 , G11B20/10009 , G11B20/10055 , G11B20/10111 , G11B20/10481 , G11B20/1403
摘要： A recording control apparatus includes a waveform rectification section for receiving a digital signal generated from an analog signal representing information reproduced from an information recording medium, and rectifying a waveform of the digital signal; a maximum likelihood decoding section for performing maximum likelihood decoding of the digital signal having the waveform thereof rectified, and generating a binary signal representing a result of the maximum likelihood decoding; a reliability calculation section for calculating a reliability of the result of the maximum likelihood decoding based on the digital signal having the waveform thereof rectified and the binary signal; and an adjusting section for adjusting a shape of a recording signal for recording the information on the information recording medium based on the calculated reliability.
摘要翻译：一种记录控制装置，包括：波形整流部分，用于接收从表示从信息记录介质再现的信息的模拟信号产生的数字信号，并整流数字信号的波形; 最大似然解码部分，用于对其波形进行整流的数字信号进行最大似然解码，并生成表示最大似然解码结果的二进制信号; 可靠性计算部分，用于基于其整流波形的数字信号和二进制信号来计算最大似然解码结果的可靠性; 以及调整部，用于基于所计算的可靠性来调整用于将信息记录在信息记录介质上的记录信号的形状。

10. 发明申请

US20100014405A1 Method for Evaluating Quality of Read Signal And Apparatus for Reading Information 有权
标题翻译：读信号质量评估方法及信息读取装置
公开(公告)号：US20100014405A1
公开(公告)日：2010-01-21
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： G11B7/00
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kj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为第二状态 Sk一次k。该方法包括以下步骤：检测在时间kj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，并且评估在该周期中解码的读取信号的可靠性 j，by | 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。

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