公开(公告)号：US20070177468A1

公开(公告)日：2007-08-02

申请号：US10591327

申请日：2005-10-21

申请人： Harumitsu Miyashita ,  Yasumori Hino ,  Tetsuya Shihara

发明人： Harumitsu Miyashita ,  Yasumori Hino ,  Tetsuya Shihara

IPC分类号： G11B21/08

CPC分类号： G11B7/1267 ,  G11B7/00736

摘要： An access unit, an access method, an access program and a control unit are provided which are capable of shortening the seek time of an optical head for a test record and a test regeneration. A record medium 200 includes a user area for recording user data which can be recorded and regenerated based on an instruction given by a user; a recording-system circuit section 120 records test data based on a predetermined test condition in the user area; a regeneration-system circuit section 130 reads the test data recorded in the user area by the recording-system circuit section 120; and a system control circuit 102 refers to the test data read by the regeneration-system circuit section 130 and adjusts an access parameter for accessing the record medium 200.

摘要翻译： 提供一种存取单元，访问方法，访问程序和控制单元，其能够缩短用于测试记录和测试再生的光学头的寻道时间。 记录介质200包括用于记录可以基于用户给出的指令来记录和再生的用户数据的用户区域; 记录系统电路部分120根据用户区域中的预定测试条件记录测试数据; 再生系统电路部分130通过记录系统电路部分120读取记录在用户区域中的测试数据; 并且系统控制电路102参考由再生系统电路部分130读取的测试数据，并调整用于访问记录介质200的访问参数。

公开(公告)号：US08848500B2

公开(公告)日：2014-09-30

申请号：US13981150

申请日：2012-07-20

申请人： Emi Kitano ,  Harumitsu Miyashita ,  Ryoji Hirose

发明人： Emi Kitano ,  Harumitsu Miyashita ,  Ryoji Hirose

IPC分类号： G11B20/18 ,  G11B7/12 ,  G11B7/004 ,  G11B7/085

CPC分类号： G11B20/1879 ,  G11B7/004 ,  G11B7/00458 ,  G11B7/085 ,  G11B7/12 ,  G11B7/14

摘要： This optical read/write apparatus has first and second optical heads 2a, 2b and includes location control sections 4a, 4b which make the relative arrangement of the first and second optical heads 2a, 2b variable according to either the environmental temperature or from one medium to another. The first optical head 2a performs a write operation to record a mark on an optical storage medium 1, and the second optical head 2b reads the information that has been written by scanning the recorded mark. The apparatus further includes a nonvolatile memory which saves the relative arrangement of the first and second optical heads 2a and 2b either on an environmental temperature basis or on a medium by medium basis.

摘要翻译： 这种光学读/写装置具有第一和第二光头2a，2b，并且包括使第一和第二光头2a，2b相对布置的位置控制部分4a，4b根据环境温度或从一个介质到 另一个。 第一光学头2a执行写入操作以在光学存储介质1上记录标记，并且第二光学头2b读取通过扫描记录标记而写入的信息。 该装置还包括非易失性存储器，其在第一和第二光学头2a和2b的相对布置方面基于环境温度或基于介质的介质。

公开(公告)号：US08817583B2

公开(公告)日：2014-08-26

申请号：US13880359

申请日：2012-08-31

申请人： Ryoji Hirose ,  Harumitsu Miyashita

发明人： Ryoji Hirose ,  Harumitsu Miyashita

IPC分类号： G11B27/36 ,  G11B7/0045

CPC分类号： G11B7/00458

摘要： An optical read/write apparatus according to an embodiment includes: an optical head unit (2a, 2b) which focuses a write light beam and a read light beam onto an optical storage medium (100) and which generates a signal based on the light beam that has been reflected from the optical storage medium; and a control section (6) which controls the optical head unit (2a, 2b) so that the optical head unit records a mark on the optical storage medium by irradiating the optical storage medium with the write light beam and reads the recorded mark on the optical storage medium with the read light beam. After having started to record the mark on the optical storage medium by irradiating the optical storage medium with the write light beam and before forming the recorded mark completely, the optical head unit (2a, 2b) reads the recorded mark on the optical storage medium with the read light beam.

摘要翻译： 根据实施例的光学读/写装置包括：将写入光束和读取光束聚焦到光学存储介质（100）上并且基于光束产生信号的光学头单元（2a，2b） 已从光学存储介质反射出来; 以及控制部分（6），其控制光学头单元（2a，2b），使得光学头单元通过用光学光束照射光学存储介质来在光学存储介质上记录标记，并读取记录标记 具有读取光束的光学存储介质。 在通过用写入光束照射光学存储介质并且在完全形成记录标记之前开始在光学存储介质上记录标记之后，光学头单元（2a，2b）在光学存储介质上读取记录的标记， 读光束。

公开(公告)号：US08248902B2

公开(公告)日：2012-08-21

申请号：US12698284

申请日：2010-02-02

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 ,  G11B20/1012 ,  G11B20/10481 ,  G11B20/1816 ,  G11B2220/2537

摘要： A reproduction signal evaluation unit includes a pattern detection section for extracting, from a binary signal, a specific state transition pattern which has a possibility of causing a bit error; a differential metric computing section for computing a differential metric based on the binary signal of the extracted state transition pattern; an error computing section for computing an error rate predicted based on an integration value that is integrated by an integration section, a count value that is counted by a pattern count section, an integration value that is integrated by another integration section, and a count value that is counted by another pattern count section, and a standard deviation computing section for computing a standard deviation based on the computed error rate.

摘要翻译： 再现信号评估单元包括：模式检测部分，用于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; 差分度量计算部分，用于基于所提取的状态转变模式的二进制信号来计算差分度量; 用于计算基于由积分部分积分的积分值，由图案计数部分计数的计数值，由另一积分部分积分的积分值和计数值的误差率的误差计算部分 其由另一模式计数部分计数，以及标准偏差计算部分，用于基于计算出的错误率来计算标准偏差。

公开(公告)号：US20110032809A1

公开(公告)日：2011-02-10

申请号：US12910091

申请日：2010-10-22

申请人： Harumitsu Miyashita ,  Kohei Nakata

发明人： Harumitsu Miyashita ,  Kohei Nakata

IPC分类号： G11B27/36

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。

公开(公告)号：US20100302925A1

公开(公告)日：2010-12-02

申请号：US12745297

申请日：2009-09-29

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： G11B20/1403 ,  G11B7/0037 ,  G11B7/00458 ,  G11B7/005 ,  G11B7/24038 ,  G11B20/10009 ,  G11B20/10055 ,  G11B20/1012 ,  G11B20/10287 ,  G11B20/10296 ,  G11B20/10407 ,  G11B20/10481 ,  G11B20/1049 ,  G11B20/1816 ,  G11B2007/0013 ,  G11B2220/235 ,  G11B2220/2541

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。

公开(公告)号：US07366234B2

公开(公告)日：2008-04-29

申请号：US10936703

申请日：2004-09-09

申请人： Akira Yamamoto ,  Harumitsu Miyashita

发明人： Akira Yamamoto ,  Harumitsu Miyashita

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。

公开(公告)号：US07164644B2

公开(公告)日：2007-01-16

申请号：US11253682

申请日：2005-10-20

申请人： Takahiro Nagai ,  Hideshi Ishihara ,  Takashi Yumiba ,  Rie Takahashi ,  Mamoru Shoji ,  Hiroyuki Yamaguchi ,  Harumitsu Miyashita

发明人： Takahiro Nagai ,  Hideshi Ishihara ,  Takashi Yumiba ,  Rie Takahashi ,  Mamoru Shoji ,  Hiroyuki Yamaguchi ,  Harumitsu Miyashita

IPC分类号： G11B20/12

CPC分类号： G11B20/0021 ,  G11B7/007 ,  G11B7/00745 ,  G11B7/24085 ,  G11B20/00086 ,  G11B20/00268 ,  G11B20/00376 ,  G11B20/00586 ,  G11B20/00594 ,  G11B20/0071 ,  G11B20/00768 ,  G11B20/10 ,  G11B27/3027 ,  G11B2220/2562

摘要： An optical disc has a plurality of sectors, where each of the plurality of sectors includes a plurality of frames. A sub information bit value of “0” or “1” is assigned to the plurality of frames constituting a sector, excluding the first and last frames. Edge positions are displaced so that leading/lagging errors appear in accordance with a certain rule when data fields of the frames to which the sub information bit value “1” is assigned are read. Edge positions are displaced so that leading/lagging errors appear in accordance with a reversal of the certain rule when data fields of the frames to which the sub information bit value “0” is assigned are read.

摘要翻译： 光盘具有多个扇区，其中多个扇区中的每一个扇区包括多个帧。 子信息位值“0”或“1”被分配给构成扇区的多个帧，不包括第一帧和最后帧。 当分配了子信息位值“1”的帧的数据字段被读取时，边缘位置被移位，使得引导/滞后错误按照某个规则出现。 当分配了子信息位值“0”的帧的数据字段被读取时，边缘位置被移位，使得引导/滞后错误根据某个规则的反转出现。

公开(公告)号：US06735160B1

公开(公告)日：2004-05-11

申请号：US09609317

申请日：2000-06-30

申请人： Harumitsu Miyashita ,  Hiromichi Ishibashi ,  Shinichi Tanaka ,  Takashi Yumiba

发明人： Harumitsu Miyashita ,  Hiromichi Ishibashi ,  Shinichi Tanaka ,  Takashi Yumiba

IPC分类号： G11B700

CPC分类号： G11B20/0021 ,  G11B7/24085 ,  G11B20/00086 ,  G11B20/00166 ,  G11B20/00586 ,  G11B20/1403

摘要： An optical disc recording apparatus records a digital content onto an optical disc so that the perfect copying of the digital content is difficult without proper authorization. The optical disc recording apparatus includes a formatter for generating a channel signal corresponding to primary digital information, a secret key storing unit for prestoring secondary digital information, a pseudo random number generator for generating a pseudo random number series, an XOR for logically inverting the pseudo random number series according to each bit of the secondary digital information, a PE modulator for generating a PE modulation signal according to the logically inverted pseudo random number series, a phase modulator for modulating the phase of each edge of the channel signal by a fixed slight time according to the value of the PE modulation signal, and a recording channel for forming recording marks on a DVD according to the modulated channel signal.

摘要翻译： 光盘记录装置将数字内容记录到光盘上，使得在没有适当授权的情况下数字内容的完美复制是困难的。 光盘记录装置包括用于产生对应于主数字信息的信道信号的格式器，用于预存次数字信息的秘密密钥存储单元，用于产生伪随机数序列的伪随机数发生器，用于逻辑反转伪随机数序列的伪异或 根据第二数字信息的每一位的随机数序列，用于根据逻辑反相伪随机数序列产生PE调制信号的PE调制器，用于通过固定的微调对通道信号的每个边沿的相位进行调制的相位调制器 根据PE调制信号的值的时间，以及根据调制信道信号在DVD上形成记录标记的记录通道。

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。