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1. 发明授权

US07355957B2 Optical disc medium having a system information recording area of low recording density 失效
标题翻译：具有记录密度低的系统信息记录区域的光盘介质
公开(公告)号：US07355957B2
公开(公告)日：2008-04-08
申请号：US10822373
申请日：2004-04-12
申请人： Yutaka Yamanaka , Toshiaki Iwanaga , Tatsunori Ide , Chosaku Noda , Yutaka Kashihara , Akihito Ogawa , Masaaki Matsumaru
发明人： Yutaka Yamanaka , Toshiaki Iwanaga , Tatsunori Ide , Chosaku Noda , Yutaka Kashihara , Akihito Ogawa , Masaaki Matsumaru
IPC分类号： G11B7/24 , G11B7/013
CPC分类号： G11B20/10009 , G11B7/00736 , G11B7/24085 , G11B20/10055 , G11B20/1012
摘要： In order to stably carry out reproduction of information in an optical disc medium (10) using a PRML (partial-response maximum-likelihood) method for reproducing the signal, the optical disc medium (10) has not only a data recording area (14) where data is recorded at high density but also a system information recording area (16) where information is recorded at low density and binary equalizing/reproducing can be easily made. Information required to circuit setting is recorded in the system information recording area.
摘要翻译：为了使用用于再现信号的PRML（部分响应最大似然））方法在光盘介质（10）中稳定地执行信息再现，光盘介质（10）不仅具有数据记录区域（14））其中以高密度记录数据，而且还可以容易地进行以低密度记录信息的系统信息记录区域（16），并且可以容易地进行二进制均衡/再现。电路设置所需的信息被记录在系统信息记录区域中。

2. 发明授权

US07196984B2 Optical disk medium and optical disk recording and reproducing apparatus 有权
标题翻译：光盘介质和光盘记录和再现装置
公开(公告)号：US07196984B2
公开(公告)日：2007-03-27
申请号：US10780674
申请日：2004-02-19
申请人： Chosaku Noda , Hiroharu Sato , Hideaki Ohsawa , Yutaka Yamanaka , Kinji Kayanuma , Toshiaki Iwanaga
发明人： Chosaku Noda , Hiroharu Sato , Hideaki Ohsawa , Yutaka Yamanaka , Kinji Kayanuma , Toshiaki Iwanaga
IPC分类号： G11B7/24
CPC分类号： G11B20/1217 , G11B20/1833 , G11B2020/1222 , G11B2020/1232 , G11B2020/1239 , G11B2020/1265 , G11B2020/1278 , G11B2220/2562
摘要： A recording data string is composed of a plurality of synchronous frames each of which has synchronous data and coding data. Data items in the coding data contributed to creation of the same column of the error correction code are arranged at regular intervals of E in the recording data string. A data segment length L is obtained by adding an additional synchronous frame to the recording data string. Wherein, a physical segment length A satisfies the equation L=mA, m is a natural number. And A is set indivisible by E.
摘要翻译：记录数据串由多个同步帧组成，每个同步帧具有同步数据和编码数据。有助于创建纠错码的同一列的编码数据中的数据项以记录数据串中的E的规则间隔排列。通过向记录数据串添加附加同步帧来获得数据段长度L. 其中物理段长度A满足方程L = mA，m是自然数。而A是不可分割的。

3. 发明授权

US07471601B2 Optical disk recording/reproducing method, optical disk recording/reproducing apparatus and optical disk 失效
标题翻译：光盘记录/再现方法，光盘记录/再现装置和光盘
公开(公告)号：US07471601B2
公开(公告)日：2008-12-30
申请号：US11143996
申请日：2005-06-03
申请人： Yutaka Kashihara , Akihito Ogawa , Naoki Morishita , Masaki Nakano , Masatsugu Ogawa , Shuichi Ookubo , Toshiaki Iwanaga
发明人： Yutaka Kashihara , Akihito Ogawa , Naoki Morishita , Masaki Nakano , Masatsugu Ogawa , Shuichi Ookubo , Toshiaki Iwanaga
IPC分类号： G11B7/00
CPC分类号： G11B7/00456 , G11B7/1263 , G11B7/1267 , G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/1012 , G11B20/10481 , G11B2220/2537
摘要： In an optical disk system using a PRML identification system, a method for deriving an optimum recording wave in a short period of time is provided. Parameters of the recording wave are adjusted by using an evaluation value obtained by a signal evaluation method which is suitable for the PRML identification system as an index. In this case, as a parameter adjusting method, a plurality of adjusting methods are utilized.
摘要翻译：在使用PRML识别系统的光盘系统中，提供了用于在短时间内导出最佳记录波的方法。通过使用通过适合于PRML识别系统的信号评估方法获得的评估值作为指标来调整记录波的参数。在这种情况下，作为参数调整方法，利用多种调整方法。

4. 发明授权

US07636287B2 Reproduced signal equalizing method for optical information media and optical information reproducing/recording apparatus 失效
标题翻译：用于光信息介质和光信息再现/记录装置的再现信号均衡方法
公开(公告)号：US07636287B2
公开(公告)日：2009-12-22
申请号：US10822374
申请日：2004-04-12
申请人： Shuichi Ohkubo , Hiromi Honma , Masatsugu Ogawa , Masaki Nakano , Toshiaki Iwanaga , Yutaka Kashihara , Yuji Nagai , Akihito Ogawa
发明人： Shuichi Ohkubo , Hiromi Honma , Masatsugu Ogawa , Masaki Nakano , Toshiaki Iwanaga , Yutaka Kashihara , Yuji Nagai , Akihito Ogawa
IPC分类号： G11B7/005 , G11B7/00
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/1012 , G11B20/10296 , G11B20/10481 , G11B2020/1288 , G11B2220/2541
摘要： Reproduced signals are equalized by the least square technique by using a predetermined number of data samples binarized by a Viterbi decoder. Even when data written on an optical disk is unknown, the data can be equalized in a stable manner and can be reproduced at a low error rate without instability factors such as divergence due to interference.
摘要翻译：通过使用由维特比解码器二值化的预定数量的数据样本，通过最小二乘法来再现信号。即使在光盘上写入的数据未知的情况下，数据也可以以稳定的方式进行均衡，并且能够以低错误率再现，而不会引起由于干扰引起的发散等不稳定因素。

5. 发明申请

US20050270939A1 Optical disk recording/reproducing method, optical disk recording/reproducing apparatus and optical disk 失效
标题翻译：光盘记录/再现方法，光盘记录/再现装置和光盘
公开(公告)号：US20050270939A1
公开(公告)日：2005-12-08
申请号：US11143996
申请日：2005-06-03
申请人： Yutaka Kashihara , Akihito Ogawa , Naoki Morishita , Masaki Nakano , Masatsugu Ogawa , Shuichi Ookubo , Toshiaki Iwanaga
发明人： Yutaka Kashihara , Akihito Ogawa , Naoki Morishita , Masaki Nakano , Masatsugu Ogawa , Shuichi Ookubo , Toshiaki Iwanaga
IPC分类号： G11B7/0045 , G11B5/09 , G11B7/004 , G11B7/125 , G11B7/24
CPC分类号： G11B7/00456 , G11B7/1263 , G11B7/1267 , G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/1012 , G11B20/10481 , G11B2220/2537
摘要： In an optical disk system using a PRML identification system, a method for deriving an optimum recording wave in a short period of time is provided. Parameters of the recording wave are adjusted by using an evaluation value obtained by a signal evaluation method which is suitable for the PRML identification system as an index. In this case, as a parameter adjusting method, a plurality of adjusting methods are utilized.
摘要翻译：在使用PRML识别系统的光盘系统中，提供了用于在短时间内导出最佳记录波的方法。通过使用通过适合于PRML识别系统的信号评估方法获得的评估值作为指标来调整记录波的参数。在这种情况下，作为参数调整方法，利用多种调整方法。

6. 发明授权

US06861965B2 Code modulating method and code modulating apparatus, demodulating method and demodulating apparatus, and information recording medium 失效
标题翻译：码调制方法和码调制装置，解调方法和解调装置以及信息记录介质
公开(公告)号：US06861965B2
公开(公告)日：2005-03-01
申请号：US10736785
申请日：2003-12-17
申请人： Kinji Kayanuma , Toshiaki Iwanaga , Chosaku Noda
发明人： Kinji Kayanuma , Toshiaki Iwanaga , Chosaku Noda
IPC分类号： G11B20/14 , G11B27/30 , H03M7/14 , H03M7/00
CPC分类号： G11B27/3027 , G11B20/1426 , G11B2020/1457 , G11B2220/2562
摘要： In a code modulating method and a code modulating apparatus, a run length has an encoding rate of ⅔ which is equal to that of (1, 7) modulation, and indicates the number of “0” bits between adjacent ones of “1” bits in the channel bit train. A data bit train is converted into the channel bit train so that the run length has a minimum value 1 and a maximum value 10. Further, upon converting any data bit train, the channel bit train does not include a pattern “1010101010101” in which the run length 1 is continuously repeated six times or more. The channel bit train has a DSV (Digital Sum Value) control bit which selects the “0” bit or “1” bit in accordance with a DSV. The channel bit train obtained by using random data for the data bit train is NRZI converted into a signal. A frequency component of the signal is reduced from a maximum value of the frequency component by 20 dB or less as a power density at a frequency of {fraction (1/10,000)} or less of a channel clock frequency.
摘要翻译：在代码调制方法和代码调制装置中，游程长度具有与（1,7）调制相等的2/3的编码率，并且表示相邻的“1”调制之间的“0”比特数 “通道位列中的位。数据比特串被转换为信道比特串，使得游程长度具有最小值1和最大值10.此外，在转换任何数据比特串时，信道比特串不包括模式“1010101010101”，其中游程长度1连续重复6次以上。信道位串具有根据DSV选择“0”位或“1”位的DSV（数字和值）控制位。通过使用数据比特串的随机数据获得的信道比特序列被NRZI转换成信号。信号的频率成分从频率分量的最大值减小20dB以下，作为频率为{分数（信道时钟频率的1 / 10,000以下）的功率密度。

7. 发明授权

US07428203B2 Signal evaluation method, information recording/reproducing apparatus, information reproducing apparatus, and information recording medium 失效
标题翻译：信号评估方法，信息记录/再现装置，信息再现装置和信息记录介质
公开(公告)号：US07428203B2
公开(公告)日：2008-09-23
申请号：US10763247
申请日：2004-01-26
申请人： Yutaka Kashihara , Yuji Nagai , Shuichi Ookubo , Masatsugu Ogawa , Masaki Nakano , Toshiaki Iwanaga
发明人： Yutaka Kashihara , Yuji Nagai , Shuichi Ookubo , Masatsugu Ogawa , Masaki Nakano , Toshiaki Iwanaga
IPC分类号： G11B20/18
CPC分类号： G11B20/10101 , G11B7/0062 , G11B20/10009 , G11B20/10055 , G11B20/10111 , G11B20/1816
摘要： Reproduction signals include patterns for which recognition errors are likely. With respect to such patterns, probable error patterns are prepared. Tables showing correct patterns and error patterns are prepared, and evaluation values accurately representing signal quality are calculated. In an apparatus using a PRML method, discrimination data and a plurality of predetermined bit sequence pairs are examined to detect matching. A bit sequence and corresponding two ideal responses are calculated. Euclidean distances between the two ideal responses and equalization signals are obtained, and the difference between the Euclidean distances is further obtained. A quality evaluation value of a reproduction signal is calculated based on a mean value, a standard deviation, an appearance probability of the predetermined bit sequence, and a Hamming distance between the predetermined bit sequence pairs.
摘要翻译：繁殖信号包括识别错误可能的模式。关于这种模式，准备可能的错误模式。准备显示正确图案和错误图案的表格，并计算准确表示信号质量的评价值。在使用PRML方法的装置中，检查鉴别数据和多个预定位序列对以检测匹配。计算一个位序列和相应的两个理想响应。获得两个理想响应和均衡信号之间的欧氏距离，并进一步获得欧氏距离之间的差异。基于平均值，标准偏差，预定比特序列的出现概率以及预定比特序列对之间的汉明距离来计算再现信号的质量评估值。

8. 发明授权

US07184381B2 Optical disk, optical disk recording/reproduction apparatus, and optical disk signal quality evaluation method 有权
标题翻译：光盘，光盘记录/再现装置和光盘信号质量评估方法
公开(公告)号：US07184381B2
公开(公告)日：2007-02-27
申请号：US10736572
申请日：2003-12-17
申请人： Shuichi Ohkubo , Hiromi Honma , Masatsugu Ogawa , Masaki Nakano , Toshiaki Iwanaga , Yutaka Kashihara , Yuuji Nagai
发明人： Shuichi Ohkubo , Hiromi Honma , Masatsugu Ogawa , Masaki Nakano , Toshiaki Iwanaga , Yutaka Kashihara , Yuuji Nagai
IPC分类号： G11B5/09
CPC分类号： G11B20/10009 , G11B20/10055 , G11B20/1012 , G11B20/10296 , G11B2220/20 , G11B2220/216 , G11B2220/218
摘要： In order to evaluate the quality of a signal recorded on an optical recording medium, a target signal is obtained based on a predetermined data string and a predetermined partial response characteristic, and for each clock cycle, an equalization error is calculated that is a difference between the target signal and a signal reproduced each clock cycle. Further, the product of the equalization errors calculated at different times is obtained, and based on the obtained product, the quality of a signal is evaluated.
摘要翻译：为了评估记录在光学记录介质上的信号的质量，基于预定数据串和预定的部分响应特性获得目标信号，并且对于每个时钟周期，计算均衡误差，该均衡误差是目标信号和每个时钟周期再生的信号。此外，获得在不同时间计算的均衡误差的乘积，并且基于获得的乘积来评估信号的质量。

9. 发明授权

US07414955B2 Optical disc and recording/producing method therefor 失效
标题翻译：光盘及其记录/制作方法
公开(公告)号：US07414955B2
公开(公告)日：2008-08-19
申请号：US11011023
申请日：2004-11-29
申请人： Toshiaki Iwanaga
发明人： Toshiaki Iwanaga
IPC分类号： G11B7/24
CPC分类号： G11B7/24038 , G11B7/00718 , G11B7/00745
摘要： An optical disc including one or more than one recording layers has land areas (131) and groove areas (132) as recording tracks, wherein a data recording area of at least one of the recording layers is divided into a plurality of zones in a radial direction. In each of the divided zones, one or more than one prepits (133) with predetermined data are disposed in a track so that each header area is disposed at ever other boundary among the boundaries between the land areas and the groove areas. Each header area is shifted in the circumferential direction from other header areas apart from the each header area by two boundaries without overlapping in the radial direction.
摘要翻译：包括一个或多于一个记录层的光盘具有作为记录磁道的岸台区域（131）和凹槽区域（132），其中至少一个记录层的数据记录区域被分成多个区域方向。在每个分割区域中，具有预定数据的一个或多个预凹坑（133）被布置在轨道中，使得每个标题区域被布置在陆地区域和凹槽区域之间的边界之间的另一边界处。每个标题区域在距离每个标题区域的其他标题区域沿圆周方向偏移两个边界，而在径向方向上不重叠。

10. 发明授权

US06643234B2 Optical disk device 失效
公开(公告)号：US06643234B2
公开(公告)日：2003-11-04
申请号：US10253918
申请日：2002-09-25
申请人： Toshiaki Iwanaga
发明人： Toshiaki Iwanaga
IPC分类号： G11B700
CPC分类号： G11B7/24085 , G11B7/00718 , G11B7/00745 , G11B7/0938 , G11B7/094 , G11B7/0948 , G11B11/10576 , G11B20/1217 , G11B27/19 , G11B27/3027 , G11B2020/1232 , G11B2020/1265 , G11B2020/1274 , G11B2020/1287 , G11B2020/1298 , G11B2220/216 , G11B2220/2537
摘要： An optical disk provided with a land region and a groove region that are formed on a substrate, the land region and groove region being used as a recording track that is the medium of the recording/playback of information signal, and a pre-pit region that is formed at the boundary part of neighboring land region and groove region and is disposed every other boundary part, the pre-pit region including specific information. Characteristically, the specific information's in neighboring pre-pit regions are not aligned in the radius direction of the optical disk.

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