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1.发明申请OPTICAL DISC, OPTICAL DISC DRIVE, OPTICAL DISC RECORDING/REPRODUCING METHOD, AND INTEGRATED CIRCUIT 有权光盘，光盘驱动器，光盘记录/再现方法和集成电路公开(公告)号：US20090180361A1
公开(公告)日：2009-07-16
申请号：US12272948
申请日：2008-11-18
CPC分类号： G11B7/00745 , G11B20/1217 , G11B27/3027 , G11B2020/1221 , G11B2020/1227 , G11B2020/1232 , G11B2020/1239 , G11B2020/1267 , G11B2020/1268 , G11B2020/1278 , G11B2020/1292 , G11B2220/235 , G11B2220/2541
摘要： In an optical disc, a track on which data is recordable is divided into a plurality of blocks, and each block includes L pieces of sub blocks. On each sub block, M-bit first digital information specifying a block address of a block including the each sub block and N-bit second digital information capable of representing a numerical value equal to or larger than L are recorded.
摘要翻译： 在光盘中，将数据可记录的轨道划分为多个块，每个块包括L个子块。 在每个子块上记录指定包括每个子块的块的块地址的M位第一数字信息和能够表示等于或大于L的数值的N位第二数字信息。
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公开(公告)号：US20110149704A1
公开(公告)日：2011-06-23
申请号：US13034762
申请日：2011-02-25
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。
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公开(公告)号：US20090225639A1
公开(公告)日：2009-09-10
申请号：US12394281
申请日：2009-02-27
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。
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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
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.
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5.发明申请PHASE ERROR DETECTING DEVICE, WAVEFORM SHAPING DEVICE AND OPTICAL DISC DEVICE 有权相位误差检测装置，波形形状装置和光盘装置公开(公告)号：US20110096652A1
公开(公告)日：2011-04-28
申请号：US12959756
申请日：2010-12-03
申请人： Harumitsu MIYASHITA , Kohei NAKATA
发明人： Harumitsu MIYASHITA , Kohei NAKATA
IPC分类号： G11B20/18
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10222 , G11B20/10296 , G11B20/10481 , G11B2220/2541
摘要： A waveform shaping portion receives a digital reproduced signal generated from an analog reproduced signal reproduced from an information recording medium and shapes the waveform of the digital reproduced signal. A maximum likelihood decoding portion applies maximum likelihood decoding to the digital reproduced signal in the shaped waveform and generates a binarized signal indicating the result of the maximum likelihood decoding. A phase detection portion extracts, during the maximum likelihood decoding/a phase error using state transition patterns having only a single zero cross point among differential metrics at a plurality of merging points at which a set of paths branched from a given state merges. A synchronization detection portion generates a reproduction clock signal using the phase error that has been detected and brings the digital reproduced signal into synchronization with the reproduction clock signal that has been generated. This configuration makes it possible to generate a reproduction clock signal in a stable manner.
摘要翻译： 波形整形部分接收从信息记录介质再现的模拟再现信号产生的数字再生信号，并对数字再现信号的波形进行整形。 最大似然解码部分对成形波形中的数字再现信号应用最大似然解码，并生成指示最大似然解码结果的二值化信号。 相位检测部分在使用从给定状态分支的一组路径合并的多个合并点处的差分度量中仅具有单个零交叉点的状态转换模式时，在最大似然解码/相位误差期间提取相位误差。 同步检测部分使用已经检测到的相位误差来产生再现时钟信号，并使数字再现信号与已经产生的再现时钟信号同步。 该配置使得可以以稳定的方式产生再现时钟信号。
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6.发明申请INFORMATION RECORDING MEDIUM AND INFORMATION RECORDING MEDIUM EVALUATION METHOD 失效信息记录介质和信息记录介质评估方法公开(公告)号：US20090180375A1
公开(公告)日：2009-07-16
申请号：US12332536
申请日：2008-12-11
申请人： Harumitsu MIYASHITA , Kohei NAKATA
发明人： Harumitsu MIYASHITA , Kohei NAKATA
IPC分类号： G11B7/26
CPC分类号： G11B20/10324 , G11B7/00736 , G11B7/1267 , G11B20/10009 , G11B20/1816 , G11B2220/215 , G11B2220/2541
摘要： An information recording medium according to the present invention includes an information recording layer on which information is recordable, and is evaluated using an evaluation index which is found based on a ratio of a center of an amplitude of a reproduction signal corresponding to a second shortest mark and a second shortest space, with respect to a center of an amplitude of a reproduction signal corresponding to a longest mark and a longest space.
摘要翻译： 根据本发明的信息记录介质包括信息记录层，信息记录层可记录信息，并且使用基于与第二最短标记相对应的再现信号的幅度的中心的比率而求出的评价指标进行评估 以及相对于对应于最长标记和最长空间的再现信号的幅度的中心的第二最短空间。
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7.发明申请PHASE ERROR DETECTING DEVICE, WAVEFORM SHAPING DEVICE AND OPTICAL DISC DEVICE 有权相位误差检测装置，波形形状装置和光盘装置公开(公告)号：US20090180368A1
公开(公告)日：2009-07-16
申请号：US12343894
申请日：2008-12-24
申请人： Harumitsu MIYASHITA , Kohei Nakata
发明人： Harumitsu MIYASHITA , Kohei Nakata
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10222 , G11B20/10296 , G11B20/10481 , G11B2220/2541
摘要： A waveform shaping portion receives a digital reproduced signal generated from an analog reproduced signal reproduced from an information recording medium and shapes the waveform of the digital reproduced signal. A maximum likelihood decoding portion applies maximum likelihood decoding to the digital reproduced signal in the shaped waveform and generates a binarized signal indicating the result of the maximum likelihood decoding. A phase detection portion extracts, during the maximum likelihood decoding, a phase error using state transition patterns having only a single zero cross point among differential metrics at a plurality of merging points at which a set of paths branched from a given state merges. A synchronization detection portion generates a reproduction clock signal using the phase error that has been detected and brings the digital reproduced signal into synchronization with the reproduction clock signal that has been generated. This configuration makes it possible to generate a reproduction clock signal in a stable manner.
摘要翻译： 波形整形部分接收从信息记录介质再现的模拟再现信号产生的数字再生信号，并对数字再现信号的波形进行整形。 最大似然解码部分对成形波形中的数字再现信号应用最大似然解码，并生成指示最大似然解码结果的二值化信号。 相位检测部分在最大似然解码期间使用在从给定状态分支的一组路径合并的多个合并点处的差分度量中仅具有单个零交叉点的状态转换模式来提取相位误差。 同步检测部分使用已经检测到的相位误差来产生再现时钟信号，并使数字再现信号与已经产生的再现时钟信号同步。 该配置使得可以以稳定的方式产生再现时钟信号。
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8.发明申请OPTICAL DISC, OPTICAL DISC DRIVE, OPTICAL DISC RECORDING/REPRODUCING METHOD, AND INTEGRATED CIRCUIT 有权光盘，光盘驱动器，光盘记录/再现方法和集成电路公开(公告)号：US20090175155A1
公开(公告)日：2009-07-09
申请号：US12273674
申请日：2008-11-19
申请人： Kohei NAKATA , Harumitsu MIYASHITA
发明人： Kohei NAKATA , Harumitsu MIYASHITA
IPC分类号： G11B7/24
CPC分类号： G11B7/00745 , G11B7/005 , G11B7/0053 , G11B20/10222 , G11B20/1217 , G11B20/14 , G11B2020/1221 , G11B2020/1287 , G11B2220/2537
摘要： A big pattern for a run-in area which allows data reproduction to be performed stably even when the recording density of an optical disc is increased is provided. An optical disc according to the present invention includes tracks, each of which divided into a plurality of recording blocks. Each of the plurality of blocks includes a run-in area and a data area. In the run-in area, a prescribed run-in bit pattern is recordable; and in the data area, bit patterns having a plurality of bit lengths obtained by modulating data as a recording target in accordance with a prescribed modulation rule are recordable. In this optical disc, at least one of spatial frequencies corresponding to the bit patterns having the plurality of bit lengths is higher than a cutoff frequency. The run-in bit pattern recordable in the run-in area includes the bit patterns having the plurality of bit lengths, from which the bit pattern corresponding to the frequency higher than the OTF cutoff frequency has been excluded.
摘要翻译： 提供了即使当光盘的记录密度增加时也允许稳定地执行数据再现的运行区域的大图案。 根据本发明的光盘包括被分成多个记录块的轨道。 多个块中的每一个都包括导入区和数据区。 在跑步区域，可以记录规定的磨合位图案; 并且在数据区域中，可以记录具有根据规定的调制规则通过调制作为记录目标的数据而获得的多个位长度的位模式。 在该光盘中，对应于具有多个位长度的位模式的空间频率中的至少一个高于截止频率。 可以在导入区域中记录的流入位模式包括具有多个比特长度的比特模式，从而排除与高于OTF截止频率的频率对应的比特模式。
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9.发明申请INFORMATION RECORDING MEDIUM EVALUATION METHOD, INFORMATION RECORDING MEDIUM, METHOD FOR MANUFACTURING INFORMATION RECORDING MEDIUM, SIGNAL PROCESSING METHOD AND ACCESS CONTROL APPARATUS 审中-公开信息记录介质评估方法，信息记录介质，制造信息记录介质的方法，信号处理方法和访问控制装置公开(公告)号：US20080159104A1
公开(公告)日：2008-07-03
申请号：US11964825
申请日：2007-12-27
申请人： Harumitsu MIYASHITA , Kohei NAKATA
发明人： Harumitsu MIYASHITA , Kohei NAKATA
IPC分类号： G11B5/58
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，则仅通过仅使用仅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。
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10.发明申请RECORDING CONTROL APPARATUS, RECORDING AND REPRODUCTION APPARATUS, AND RECORDING CONTROL METHOD 有权记录控制装置，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
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。
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