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公开(公告)号：US20050063275A1
公开(公告)日：2005-03-24
申请号：US10936703
申请日：2004-09-09
CPC分类号： G11B20/10027 , G11B5/035 , G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/10101 , G11B20/10111 , G11B20/10296 , G11B2020/1288 , G11B2220/2541
摘要： An adaptive equalization apparatus comprises an equalizer for equalizing a playback signal read from a recording medium, using tap coefficients; a maximum likelihood decoder for subjecting an equalized signal outputted from the equalizer to maximum likelihood decoding; a first delay unit for delay-adjusting the playback signal to make the signal coincide with the timing of a tentative decoded signal that is obtained in the process of maximum likelihood decoding; a second delay unit for delay-adjusting the equalized signal to make the signal coincide with the timing of the tentative decoded signal; and a coefficient adaptive controller for adaptively controlling the tap coefficients so that an error in the maximum likelihood decoding is minimized, on the basis of the tentative decoded signal, an output of the first delay unit, and an output of the second delay unit.
摘要翻译： 自适应均衡装置包括均衡器，用于使用抽头系数来均衡从记录介质读取的重放信号; 用于对从均衡器输出的均衡信号进行最大似然解码的最大似然解码器; 第一延迟单元，用于对重放信号进行延迟调整，以使信号与在最大似然解码处理中获得的暂定解码信号的定时一致; 第二延迟单元，用于对所述均衡信号进行延迟调整，使所述信号与所述暂定解码信号的定时一致; 以及系数自适应控制器，用于根据暂定解码信号，第一延迟单元的输出和第二延迟单元的输出，自适应地控制抽头系数，使最大似然解码中的误差最小化。
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公开(公告)号：US07366234B2
公开(公告)日：2008-04-29
申请号：US10936703
申请日：2004-09-09
IPC分类号： H03H7/30
CPC分类号： G11B20/10027 , G11B5/035 , G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/10101 , G11B20/10111 , G11B20/10296 , G11B2020/1288 , G11B2220/2541
摘要： An adaptive equalization apparatus comprises an equalizer for equalizing a playback signal read from a recording medium, using tap coefficients; a maximum likelihood decoder for subjecting an equalized signal outputted from the equalizer to maximum likelihood decoding; a first delay unit for delay-adjusting the playback signal to make the signal coincide with the timing of a tentative decoded signal that is obtained in the process of maximum likelihood decoding; a second delay unit for delay-adjusting the equalized signal to make the signal coincide with the timing of the tentative decoded signal; and a coefficient adaptive controller for adaptively controlling the tap coefficients so that an error in the maximum likelihood decoding is minimized, on the basis of the tentative decoded signal, an output of the first delay unit, and an output of the second delay unit.
摘要翻译： 自适应均衡装置包括均衡器，用于使用抽头系数来均衡从记录介质读取的重放信号; 用于对从均衡器输出的均衡信号进行最大似然解码的最大似然解码器; 第一延迟单元，用于对所述重放信号进行延迟调整，以使所述信号与在最大似然解码处理中获得的暂定解码信号的定时一致; 第二延迟单元，用于对所述均衡信号进行延迟调整，使所述信号与所述暂定解码信号的定时一致; 以及系数自适应控制器，用于根据暂定解码信号，第一延迟单元的输出和第二延迟单元的输出，自适应地控制抽头系数，使最大似然解码中的误差最小化。
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3.发明授权Optical recording medium, optical recording medium manufacturing method, reproduction signal processing method and evaluation method 有权光记录介质，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
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。
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4.发明授权Information recording medium evaluation method, information recording medium, method for manufacturing information recording medium, signal processing method and access control apparatus 有权信息记录介质评估方法，信息记录介质，信息记录介质的制造方法，信号处理方法和访问控制装置公开(公告)号：US08254234B2
公开(公告)日：2012-08-28
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： G11B7/004
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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5.发明申请INFORMATION REPRODUCTION METHOD, INFORMATION RECORDING METHOD, AND INFORMATION RECORDING MEDIUM 有权信息再现方法，信息记录方法和信息记录介质公开(公告)号：US20120092974A1
公开(公告)日：2012-04-19
申请号：US13378862
申请日：2011-04-12
IPC分类号： G11B7/005
CPC分类号： G11B20/10009 , G11B7/0062 , G11B7/1267 , G11B20/10287 , G11B2220/2541 , G11B2220/2562
摘要： According to the present invention, a first error pattern caused by a shift of a bit relating to a recording mark or a space of a shortest length and a second error pattern caused by an edge shift of the recording mark are used. For each of a plurality of error patterns, a pattern shift obtained by normalizing a difference between a square of a Euclidean distance between the error pattern and a reproduction signal and a square of a Euclidean distance between a correct pattern and the reproduction signal, using a square of a Euclidean distance between the correct pattern and the error pattern is detected. Length and phase errors are calculated by a sum of, or a difference between, a first pattern shift amount obtained by normalization performed using the first error pattern and a second pattern shift amount obtained by normalization performed using the second error pattern.
摘要翻译： 根据本发明，使用由与记录标记相关的位的移位引起的第一错误模式或由记录标记的边缘移位引起的最短长度的空间和第二错误模式。 对于多个误差图案中的每一个，通过使用以下方式归一化误差模式和再现信号之间的欧几里得距离的平方与欧氏距离的正方形之间的差异而获得的图案偏移， 检测正确模式与误差模式之间的欧氏距离的平方。 长度和相位误差通过使用第一误差图案进行的归一化所获得的第一图案偏移量和通过使用第二误差图案进行的归一化获得的第二图案偏移量之和或之差来计算。
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6.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
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。
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7.发明申请OPTICAL DISC, OPTICAL DISC DRIVE, OPTICAL DISC RECORDING/REPRODUCING METHOD, AND INTEGRATED CIRCUIT 审中-公开光盘，光盘驱动器，光盘记录/再现方法和集成电路公开(公告)号：US20110122749A1
公开(公告)日：2011-05-26
申请号：US13014923
申请日：2011-01-27
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： An address format for appropriately controlling the recording linear density and the number of information recording layers is provided in order to increase the recording capacity of an information recording medium such as an optical disc or the like in a range in which a necessary S/N ratio can be guaranteed. An optical disc includes an information recording layer having a concentric or spiral track, and has a format for describing a track address, which is pre-recorded on the track or is to be added to data that is to be recorded on the information recording layer. The format includes layer information regarding the information recording layer and address information regarding the track address.
摘要翻译： 提供了用于适当地控制记录线密度和信息记录层数的地址格式，以便在诸如光盘等的信息记录介质的记录容量在必要的S / N比 可以保证。 光盘包括具有同心或螺旋形轨道的信息记录层，并且具有用于描述轨道地址的格式，其被预先记录在轨道上或被添加到待记录在信息记录层上的数据 。 该格式包括关于信息记录层的层信息和关于轨道地址的地址信息。
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8.发明授权Information processing device, access device, recording medium, information processing method, and information processing program 有权信息处理装置，存取装置，记录介质，信息处理方法和信息处理程序公开(公告)号：US07936653B2
公开(公告)日：2011-05-03
申请号：US12163583
申请日：2008-06-27
IPC分类号： G11B7/00
CPC分类号： G11B7/00736 , G11B7/004 , G11B7/005 , G11B7/0053 , G11B19/12
摘要： An information processing device is a device for processing specific information recorded to a recording medium, and has a characteristic identification unit and a processing unit. The characteristic identification unit identifies the reflection characteristic of the recording medium. The processing unit processes the specific information recorded to the recording medium according to the identified reflection characteristic. The reflection characteristic is either a first characteristic such that the reflectance of light reflected by a recorded region of the recording medium (referred to as first reflectance) is greater than the reflectance of light reflected by an unrecorded region of the recording medium (referred to as second reflectance), or a second characteristic such that the first reflectance is less than the second reflectance.
摘要翻译： 信息处理装置是用于处理记录在记录媒体上的特定信息的装置，具有特征识别部和处理部。 特征识别单元识别记录介质的反射特性。 处理单元根据所识别的反射特性来处理记录在记录介质上的特定信息。 反射特性是由记录介质的记录区域反射的光的反射率（被称为第一反射率）大于由记录介质的未记录区域反射的光的反射率的第一特性（称为第一反射率 第二反射率）或第二特性使得第一反射率小于第二反射率。
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9.发明申请公开(公告)号：US20110002201A1
公开(公告)日：2011-01-06
申请号：US12881319
申请日：2010-09-14
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： An address format for appropriately controlling the recording linear density and the number of information recording layers is provided in order to increase the recording capacity of an information recording medium such as an optical disc or the like in a range in which a necessary S/N ratio can be guaranteed. An optical disc includes an information recording layer having a concentric or spiral track, and has a format for describing a track address, which is pre-recorded on the track or is to be added to data that is to be recorded on the information recording layer. The format includes layer information regarding the information recording layer and address information regarding the track address.
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公开(公告)号：US20100149940A1
公开(公告)日：2010-06-17
申请号：US12067902
申请日：2006-09-27
IPC分类号： G11B20/18
CPC分类号： H03L7/087 , G11B20/10009 , G11B20/10027 , G11B20/10037 , G11B20/10046 , G11B20/10212 , G11B20/10222 , G11B20/1217 , G11B20/14 , G11B2020/1232 , G11B2020/1238 , G11B2020/1239 , G11B2020/1268 , G11B2020/1274 , G11B2020/1287 , H03L7/07 , H03L7/091
摘要： A clock signal generator according to the present invention includes: a wobble phase error detecting section for detecting a wobble phase error that is a difference in phase between a wobble signal, representing a wobbled shape of a track on an optical disk medium, and a clock signal; a data phase error detecting section for detecting a data phase error that is a difference in phase between a data signal, representing data that has been written on the optical disk medium, and the clock signal; a frequency control section for generating a frequency control signal to control the frequency of the clock signal based on the wobble phase error and the data phase error; and a clock oscillation section for generating the clock signal with its frequency controlled in accordance with the frequency control signal.
摘要翻译： 根据本发明的时钟信号发生器包括：摆动相位误差检测部分，用于检测作为表示光盘介质上的轨道的摆动形状的摆动信号与时钟之间的相位差的摆动相位误差 信号; 数据相位误差检测部分，用于检测表示已经写在光盘介质上的数据的数据信号与时钟信号之间的相位差的数据相位误差; 频率控制部分，用于基于摆动相位误差和数据相位误差产生频率控制信号以控制时钟信号的频率; 以及时钟振荡部分，用于产生其频率根据频率控制信号而被控制的时钟信号。
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