公开(公告)号：US07646686B2

公开(公告)日：2010-01-12

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： G11B7/00

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。

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。

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。

公开(公告)号：US07907487B2

公开(公告)日：2011-03-15

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： G11B7/00

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。

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。

公开(公告)号：US20120092974A1

公开(公告)日：2012-04-19

申请号：US13378862

申请日：2011-04-12

申请人： Isao Kobayashi ,  Harumitsu Miyashita

发明人： Isao Kobayashi ,  Harumitsu Miyashita

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。

公开(公告)号：US20110122749A1

公开(公告)日：2011-05-26

申请号：US13014923

申请日：2011-01-27

申请人： Kohei Nakata ,  Naohiro Kimura ,  Harumitsu Miyashita ,  Hiroshi Ueda ,  Yoshikazu Yamamoto

发明人： Kohei Nakata ,  Naohiro Kimura ,  Harumitsu Miyashita ,  Hiroshi Ueda ,  Yoshikazu Yamamoto

IPC分类号： G11B20/00 ,  G11B7/24

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。

公开(公告)号：US07936653B2

公开(公告)日：2011-05-03

申请号：US12163583

申请日：2008-06-27

申请人： Harumitsu Miyashita ,  Junichi Minamino ,  Takeshi Nakajima

发明人： Harumitsu Miyashita ,  Junichi Minamino ,  Takeshi Nakajima

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。

公开(公告)号：US20110002201A1

公开(公告)日：2011-01-06

申请号：US12881319

申请日：2010-09-14

申请人： Kohei NAKATA ,  Naohiro Kimura ,  Harumitsu Miyashita ,  Hiroshi Ueda ,  Yoshikazu Yamamoto

发明人： Kohei NAKATA ,  Naohiro Kimura ,  Harumitsu Miyashita ,  Hiroshi Ueda ,  Yoshikazu Yamamoto

IPC分类号： G11B7/013 ,  G11B7/24

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.

公开(公告)号：US20100149940A1

公开(公告)日：2010-06-17

申请号：US12067902

申请日：2006-09-27

申请人： Kohei Nakata ,  Harumitsu Miyashita ,  Takeshi Nakajima

发明人： Kohei Nakata ,  Harumitsu Miyashita ,  Takeshi Nakajima

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。