公开(公告)号：EP1431975A2

公开(公告)日：2004-06-23

申请号：EP03029339.3

申请日：2003-12-19

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： Nakajima, Takeshi ,  Miyashita, Harumitsu ,  Kimura, Naohiro ,  Takahashi, Toshihiko ,  Ishii, Takafumi

IPC分类号： G11B20/10 ,  G11B27/10

CPC分类号： G11B7/24082 ,  G11B20/10009 ,  G11B20/1403 ,  G11B27/105 ,  G11B27/19 ,  G11B27/24

摘要： An address reproduction circuit for reproducing address information based on a reproduction signal which is read from an optical disc including a guide groove having a wobbling shape which represents modulated address information. The address reproduction circuit includes an A/D conversion section for converting an analog wobble signal included in the reproduction signal into a digital wobble signal; and a maximum likelihood decoding section for generating an address signal representing address information having maximum likelihood from the digital wobble signal based on a state transition rule defined by a modulation rule of the modulated address information.

摘要翻译： 一种地址再现电路，用于基于从包括表示调制地址信息的摆动形状的引导槽的光盘读出的再现信号再现地址信息。 地址再现电路包括：A / D转换部分，用于将包含在再现信号中的模拟摆动信号转换成数字摆动信号; 以及最大似然解码部分，用于基于由调制地址信息的调制规则定义的状态转移规则，从数字摆动信号产生表示具有最大似然度的地址信息的地址信号。

公开(公告)号：EP1530202A2

公开(公告)日：2005-05-11

申请号：EP04026435.0

申请日：2004-11-08

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： Miyashita, Harumitsu ,  Nakajima, Takeshi ,  Shoji, Mamoru ,  Hino, Yasumori

IPC分类号： G11B7/0045

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. Further a recording/reproducing method using the recording/reproducing apparatus is dislosed.

摘要翻译： 一种记录/再现设备，包括用于使用至少一个记录功率将测试信息记录到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。 此外，使用记录/再现装置的记录/再现方法被关闭。

公开(公告)号：EP1577885A3

公开(公告)日：2007-12-12

申请号：EP05012169.8

申请日：2001-09-21

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD

发明人： Shoji, Mamoru ,  Nakamura, Atsushi ,  Senga, Hisashi ,  Takahashi, Rie ,  Miyashita, Harumitsu ,  Ishida, Takashi ,  Ishibashi, Hiromichi

IPC分类号： G11B7/005 ,  G11B19/12 ,  G11B20/00 ,  G11B23/30

CPC分类号： G11B20/0021 ,  G11B7/0053 ,  G11B7/007 ,  G11B7/24085 ,  G11B20/00086 ,  G11B20/00094 ,  G11B20/00115 ,  G11B20/00304 ,  G11B20/00311 ,  G11B20/00405 ,  G11B20/00492 ,  G11B20/00507 ,  G11B20/00514 ,  G11B20/00528 ,  G11B20/00557 ,  G11B20/00586 ,  G11B20/00594 ,  G11B20/00601 ,  G11B20/00739 ,  G11B20/1217 ,  G11B23/284

摘要： A method of reproducing an optical disk storing main digital data recorded by optically readable recording marks and sub-digital data, the sub-digital data being superposed with the main digital data and being recorded to the disk by slightly displacing positions or shapes of the recording marks in a track direction of the recording mark, the method comprising constructing a pattern based on the sub-digital data, comparing the pattern with a predetermined key information, and restricting a reproduction of content recorded by the main digital data when a correlation between the pattern and the key information is not confirmed, wherein the reproduction is restricted by dropping the transfer rate to degrade image quality, or by performing intermittent reproduction.
The key information may be obtained via a network.

公开(公告)号：EP1473723A3

公开(公告)日：2007-10-10

申请号：EP04008799.1

申请日：2004-04-14

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD

发明人： Miyashita, Harumitsu ,  Nakajima, Takeshi ,  Kimura, Naohiro

IPC分类号： G11B20/10 ,  G11B20/14 ,  H04L25/06 ,  H03M5/14

CPC分类号： G11B7/0062 ,  G11B7/00456 ,  G11B20/10009 ,  G11B20/10055 ,  G11B20/10111 ,  G11B20/10481 ,  G11B20/1403

摘要： A recording control apparatus (100) includes a waveform rectification section (8) for receiving a digital signal generated from an analog signal representing information reproduced from an information recording medium (1), and rectifying a waveform of the digital signal; a maximum likelihood decoding section (9) 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 (10) 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 (104) for adjusting a shape of a recording signal for recording the information on the information recording medium (1) based on the calculated reliability.

公开(公告)号：EP1530202A3

公开(公告)日：2007-09-19

申请号：EP04026435.0

申请日：2004-11-08

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD

发明人： Miyashita, Harumitsu ,  Nakajima, Takeshi ,  Shoji, Mamoru ,  Hino, Yasumori

IPC分类号： G11B7/0045

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. Further a recording/reproducing method using the recording/reproducing apparatus is dislosed.

公开(公告)号：EP1473723A2

公开(公告)日：2004-11-03

申请号：EP04008799.1

申请日：2004-04-14

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： Miyashita, Harumitsu ,  Nakajima, Takeshi ,  Kimura, Naohiro

IPC分类号： G11B20/10 ,  G11B20/14 ,  H04L25/06 ,  H03M5/14

CPC分类号： G11B7/0062 ,  G11B7/00456 ,  G11B20/10009 ,  G11B20/10055 ,  G11B20/10111 ,  G11B20/10481 ,  G11B20/1403

摘要： A recording control apparatus (100) includes a waveform rectification section (8) for receiving a digital signal generated from an analog signal representing information reproduced from an information recording medium (1), and rectifying a waveform of the digital signal; a maximum likelihood decoding section (9) 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 (10) 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 (104) for adjusting a shape of a recording signal for recording the information on the information recording medium (1) based on the calculated reliability.

摘要翻译： 记录控制装置（100）包括：波形整流部（8），用于接收从表示从信息记录介质（1）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; 用于对其波形进行整流的数字信号进行最大似然解码并产生表示最大似然解码结果的二进制信号的最大似然解码部分（9） 可靠性计算部（10），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（104），用于基于所计算的可靠性来调整用于在信息记录介质（1）上记录信息的记录信号的形状。

公开(公告)号：EP1577885A2

公开(公告)日：2005-09-21

申请号：EP05012169.8

申请日：2001-09-21

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： Shoji, Mamoru ,  Nakamura, Atsushi ,  Senga, Hisashi ,  Takahashi, Rie ,  Miyashita, Harumitsu ,  Ishida, Takashi ,  Ishibashi, Hiromichi

IPC分类号： G11B7/005 ,  G11B19/12 ,  G11B20/00 ,  G11B23/30

CPC分类号： G11B20/0021 ,  G11B7/0053 ,  G11B7/007 ,  G11B7/24085 ,  G11B20/00086 ,  G11B20/00094 ,  G11B20/00115 ,  G11B20/00304 ,  G11B20/00311 ,  G11B20/00405 ,  G11B20/00492 ,  G11B20/00507 ,  G11B20/00514 ,  G11B20/00528 ,  G11B20/00557 ,  G11B20/00586 ,  G11B20/00594 ,  G11B20/00601 ,  G11B20/00739 ,  G11B20/1217 ,  G11B23/284

摘要： An optical disk, and a method and apparatus for reproducing and/or recording data to the disk are provided for preventing illegal copying of authorized disks recording copyrighted digital content. The optical disk 10 has a control area 12 for storing control data, a data area 14 for storing main digital data (content), and an identification area 13 for storing sub-digital data specific to the main digital data. The sub-digital data is recorded as a pit sequence at a locally phase modulated clock timing. When disk identification data is recorded as the sub-digital data, key information stored to the reproduction apparatus is compared with identification data (sub-digital data) detected from jitter fluctuations in the identification area 13 when content is reproduced from the optical disk 10. If a specific correlation is thus confirmed, the disk is recognized as a legally copied disk and reproduction is enabled. Illegal copies can thus be prevented.

摘要翻译： 一种再现存储由光学可读记录标记和子数字数据记录的主数字数据的光盘的方法，该子数字数据与主数字数据叠加并通过略微移位记录的位置或形状而被记录在盘上 标记在记录标记的轨道方向上，所述方法包括基于子数字数据构建图案，将图案与预定的键信息进行比较，以及当主数字数据记录的内容的再现时，限制由主数字数据记录的内容的再现 模式和密钥信息未被确认，其中通过丢弃传送速率来降低图像质量或通过执行间歇再现来限制再现。 密钥信息可以通过网络获得。