公开(公告)号：US08132024B2

公开(公告)日：2012-03-06

申请号：US10796214

申请日：2004-03-10

申请人： Toshihisa Nakano ,  Masato Yamamichi ,  Masami Yamamichi, legal representative ,  Satomi Yamamichi, legal representative ,  Keiko Yamamichi, legal representative ,  Yuichi Futa ,  Motoji Ohmori ,  Makoto Tatebayashi ,  Shunji Harada ,  Kaoru Murase

发明人： Toshihisa Nakano ,  Masato Yamamichi ,  Yuichi Futa ,  Motoji Ohmori ,  Makoto Tatebayashi ,  Shunji Harada ,  Kaoru Murase

IPC分类号： G06F21/00

CPC分类号： H04L9/0822 ,  G11B20/00086 ,  G11B20/00253 ,  H04L9/3268 ,  H04L2209/60

摘要： A recording and reproduction apparatus for preventing illegitimate use of contents. A recording medium stores an inherent number in an unrewritable area. The recording apparatus writes media key data and an encrypted content onto the recording medium. The media key data includes encrypted media keys generated by (i) for each of unrevoked reproduction apparatuses, encrypting a media key using a device key of the unrevoked reproduction apparatus respectively, and (ii) for each of revoked reproduction apparatuses, encrypting detection information using a device key of the revoked reproduction apparatus. The reproduction apparatus decrypts the encrypted media key using a device key to generate a decryption media key, judges whether the decryption media key is the detection information, and prohibits the encrypted content recorded on the recording medium from being decrypted when judged in the affirmative.

摘要翻译： 一种用于防止非法使用内容的记录和再现装置。 记录介质将固有数量存储在不可重写区域中。 记录装置将媒体密钥数据和加密内容写入记录介质。 媒体密钥数据包括由（i）针对每个未被复制的再现设备生成的加密的媒体密钥，分别使用未被复制的设备的设备密钥加密媒体密钥，以及（ii）对于每个撤销的再现设备，使用 撤销再现设备的设备密钥。 再现装置使用设备密钥对加密的媒体密钥进行解密以生成解密媒体密钥，判断解密媒体密钥是否为检测信息，并且当以肯定判断时，禁止记录在记录介质上的加密内容被解密。

公开(公告)号：US07900062B2

公开(公告)日：2011-03-01

申请号：US11878734

申请日：2007-07-26

申请人： Masao Nonaka ,  Yuichi Futa ,  Toshihisa Nakano ,  Kaoru Yokota ,  Motoji Ohmori ,  Masaya Miyazaki ,  Masaya Yamamoto ,  Kaoru Murase ,  Senichi Onoda

发明人： Masao Nonaka ,  Yuichi Futa ,  Toshihisa Nakano ,  Kaoru Yokota ,  Motoji Ohmori ,  Masaya Miyazaki ,  Masaya Yamamoto ,  Kaoru Murase ,  Senichi Onoda

IPC分类号： H04L9/00 ,  H04L9/32 ,  H04K1/00 ,  G06F11/30 ,  G06F12/14 ,  G06F17/00

CPC分类号： H04L9/3247 ,  G06F21/10 ,  G06F21/6209 ,  G06F21/64 ,  G06F2221/0773 ,  H04L9/3236 ,  H04L2209/60 ,  Y10S707/99942

摘要： Processing load on an executing device for conducting playback is high during the playback of contents since the executing device performs verification of the contents validity in parallel with the contents playback, and therefore the executing device has to be equipped with a highly efficient processor. The present invention reduces the processing load involved in the verification by using, for the verification, only a predetermined number of encrypted units selected randomly from multiple encrypted units constituting encrypted contents recorded on the DVD. In addition, the present invention is capable of improving the accuracy of detecting unauthorized contents to some extent by randomly selecting a predetermined number of encrypted units every time the verification is performed.

摘要翻译： 由于执行装置与内容重放并行地执行内容有效性的验证，所以在内容的重放期间，用于进行再现的执行装置上的处理负载很高，因此执行装置必须配备高效率的处理器。 本发明通过仅使用构成在DVD上记录的加密内容的多个加密单元随机选择的预定数量的加密单元来验证验证。 此外，本发明能够通过每次执行验证时随机选择预定数量的加密单元，来在一定程度上提高检测未授权内容的准确性。

公开(公告)号：US07610626B2

公开(公告)日：2009-10-27

申请号：US10395135

申请日：2003-03-25

申请人： Takahiro Nagai ,  Kaoru Murase ,  Hideshi Ishihara

发明人： Takahiro Nagai ,  Kaoru Murase ,  Hideshi Ishihara

IPC分类号： G06F7/04 ,  G06F17/30 ,  G06F21/00

CPC分类号： H04N21/43615 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00333 ,  G11B20/00507 ,  G11B20/00536 ,  G11B20/00746 ,  G11B20/00753 ,  G11B20/00768 ,  H04N5/765 ,  H04N5/775 ,  H04N5/781 ,  H04N5/85 ,  H04N5/913 ,  H04N9/7921 ,  H04N9/8042 ,  H04N21/235 ,  H04N21/4345 ,  H04N21/435 ,  H04N21/4367 ,  H04N2005/91314 ,  H04N2005/91321 ,  H04N2005/91328 ,  H04N2005/91364 ,  H04N2005/91371

摘要： An MPEG2-PS format digital stream is composed of VOBUs and each VOBU except an RDI-Pack at the top is encrypted using a content key Kc. The content key Kc is an encryption key obtained by adding a title key Kt to CCI, and then converting a time varying coefficient using the sum. Accordingly, the resulting content key Kc differs for each VOBU. Since each content key Kc is all different for such a small unit of VOBU, copyright of the digital stream is firmly protected. CCI contained in RDI-Pack represents conditional Copy Freely status which allows the digital stream to be copied on condition that the digital stream is recorded only in encrypted form.

摘要翻译： MPEG2-PS格式的数字流由VOBU组成，除顶部的RDI-Pack之外的每个VOBU都使用内容密钥Kc进行加密。 内容密钥Kc是通过将标题密钥Kt添加到CCI而获得的加密密钥，然后使用该和来转换时变系数。 因此，对于每个VOBU，所得到的内容密钥Kc不同。 由于每个内容密钥Kc对于这样一个小单元的VOBU都是不同的，所以数字流的版权被牢固地保护。 RDI-Pack中包含的CCI表示条件复制自由状态，允许在数字流仅以加密形式记录的条件下复制数字流。

公开(公告)号：US20060251391A1

公开(公告)日：2006-11-09

申请号：US11454794

申请日：2006-06-19

申请人： Shinichi Saeki ,  Kaoru Murase ,  Tomoyuki Okada ,  Kazuhiro Tsuga ,  Tokuo Nakatani

发明人： Shinichi Saeki ,  Kaoru Murase ,  Tomoyuki Okada ,  Kazuhiro Tsuga ,  Tokuo Nakatani

IPC分类号： H04N7/00

CPC分类号： H04N9/8042 ,  G11B19/022 ,  G11B27/005 ,  G11B27/034 ,  G11B27/036 ,  G11B27/105 ,  G11B27/3027 ,  G11B27/329 ,  G11B27/34 ,  G11B2220/216 ,  G11B2220/2562 ,  G11B2220/2575 ,  H01L27/1087 ,  H04N5/775 ,  H04N5/85 ,  H04N9/8063

摘要： An optical disc including: a data area storing one or more video objects; and a time map area storing time map information. Each video object includes a plurality of video object units. The time map information includes a first time table and a second time table for each video object. Each first time table includes: addresses of video object units in a corresponding video object; and indicators. The addresses are arranged in order and indicate storage positions of the video object units that correspond to reproduction points that differ by a predetermined time unit. The predetermined time unit is longer than a maximum reproduction period of a video object unit. The indicators specify the video object units which respectively correspond to the addresses. Each second time table includes an entry for each video object unit in the corresponding video object. The entries are arranged in order. Each second time table includes a reproduction period and a data size of each video object unit.

公开(公告)号：US07079757B2

公开(公告)日：2006-07-18

申请号：US09910909

申请日：2001-07-24

申请人： Shinichi Saeki ,  Kaoru Murase ,  Tomoyuki Okada ,  Kazuhiro Tsuga ,  Tokuo Nakatani

发明人： Shinichi Saeki ,  Kaoru Murase ,  Tomoyuki Okada ,  Kazuhiro Tsuga ,  Tokuo Nakatani

IPC分类号： H04N5/85

CPC分类号： H04N9/8042 ,  G11B19/022 ,  G11B27/005 ,  G11B27/034 ,  G11B27/036 ,  G11B27/105 ,  G11B27/3027 ,  G11B27/329 ,  G11B27/34 ,  G11B2020/00079 ,  G11B2220/216 ,  G11B2220/2562 ,  G11B2220/2575 ,  H01L27/1087 ,  H04N5/775 ,  H04N5/85 ,  H04N9/8063

摘要： An optical disc including: a data area storing one or more video objects; and a time map area storing time map information. Each video object includes a plurality of video object units. The time map information includes a first time table and a second time table for each video object. Each first time table includes: addresses of video object units in a corresponding video object; and indicators. The addresses are arranged in order and indicate storage positions of the video object units that correspond to reproduction points that differ by a predetermined time unit. The predetermined time unit is longer than a maximum reproduction period of a video object unit. The indicators specify the video object units which respectively correspond to the addresses. Each second time table includes an entry for each video object unit in the corresponding video object. The entries are arranged in order. Each second time table includes a reproduction period and a data size of each video object unit.

公开(公告)号：US20060140590A1

公开(公告)日：2006-06-29

申请号：US11356141

申请日：2006-02-17

申请人： Kaoru Murase ,  Tomoyuki Okada ,  Kazuhiro Tsuga ,  Noriko Sugimoto

发明人： Kaoru Murase ,  Tomoyuki Okada ,  Kazuhiro Tsuga ,  Noriko Sugimoto

IPC分类号： H04N7/08

CPC分类号： G11B27/034 ,  G11B19/022 ,  G11B20/10527 ,  G11B27/105 ,  G11B27/329 ,  G11B27/34 ,  G11B2020/10546 ,  G11B2020/10592 ,  G11B2220/216 ,  G11B2220/2562 ,  G11B2220/2575 ,  H04N5/85 ,  H04N9/8045 ,  H04N9/8211

摘要： Optical discs formatted to record plural audio streams of different content for reproduction with a single video stream can result in audio output of content unexpected by the user depending upon the audio stream configuration contained in the AV stream reproduced. This can confuse and cause the user to change the audio output after reproduction starts. To prevent this, information indicating the type of audio stream configuration contained in each AV stream on the optical disc is stored with each audio stream. This audio stream type information is presented to the user on the same screen from which an AV program is selected for playback. The use can thus know before playback starts what audio stream channel is preselected for playback, and can change the audio channel as desired before payback starts.

摘要翻译： 用于记录用于用单个视频流再现的不同内容的多个音频流的光盘可以导致用户意外的内容的音频输出，这取决于包含在再现的AV流中的音频流配置。 这可能会混淆，并导致用户在再现开始后更改音频输出。 为了防止这种情况，与每个音频流一起存储指示包含在光盘上的每个AV流中的音频流配置的类型的信息。 该音频流类型信息在选择AV节目用于播放的同一屏幕上呈现给用户。 因此，在播放开始之前可以知道使用什么音频流频道进行播放，并且可以在投资回收开始之前根据需要改变音频频道。

公开(公告)号：US20050008338A1

公开(公告)日：2005-01-13

申请号：US10909096

申请日：2004-07-30

申请人： Kazuhiko Yamauchi ,  Masayuki Kozuka ,  Kazuhiro Tsuga ,  Kaoru Murase ,  Shinichi Saeki ,  Katsuhiko Miwa

发明人： Kazuhiko Yamauchi ,  Masayuki Kozuka ,  Kazuhiro Tsuga ,  Kaoru Murase ,  Shinichi Saeki ,  Katsuhiko Miwa

IPC分类号： G09B5/06 ,  G11B7/0037 ,  G11B7/007 ,  G11B7/013 ,  G11B20/12 ,  G11B27/10 ,  G11B27/30 ,  G11B27/32 ,  G11B27/34 ,  H04N5/85 ,  H04N5/92 ,  H04N5/926 ,  H04N9/804 ,  H04N9/806 ,  H04N9/82 ,  H04N5/76 ,  H04N5/781

CPC分类号： H04N9/8233 ,  G09B5/065 ,  G11B7/0037 ,  G11B7/007 ,  G11B7/24085 ,  G11B27/105 ,  G11B27/3027 ,  G11B27/309 ,  G11B27/329 ,  G11B27/34 ,  G11B2020/10537 ,  G11B2220/213 ,  G11B2220/2562 ,  H04N5/85 ,  H04N5/9208 ,  H04N5/9262 ,  H04N9/8042 ,  H04N9/8045 ,  H04N9/8063 ,  H04N9/8216

摘要： A multimedia optical disc is provided. The multimedia optical disc includes a data area and a management information area. The data area stores a plurality pieces of video data. The management information area stores a channel table in which a plurality of logical channel numbers are respectively related to a plurality of physical channel numbers for each piece of video data. A piece of moving picture data and a plurality pieces of sub-data are interleaved in each piece of video data. The sub-data is either of audio data and sub-picture data as still pictures. The logical channel numbers are shared by pieces of video data. The physical channel numbers are used to physically identify the plurality pieces of sub-data. With this construction, it is possible to manage sub-data even when the sub-data is dealt with by a plurality pieces of video data.

摘要翻译： 提供多媒体光盘。 多媒体光盘包括数据区和管理信息区。 数据区域存储多条视频数据。 管理信息区域存储多个逻辑信道号分别与每条视频数据的多个物理信道号相关的信道表。 一条运动图像数据和多条子数据在每条视频数据中交错。 子数据是作为静止图像的音频数据和子图像数据中的任一个。 逻辑信道号由多条视频数据共享。 物理信道号用于物理识别多条子数据。 利用这种结构，即使当通过多条视频数据处理子数据时，也可以管理子数据。

公开(公告)号：US06798981B1

公开(公告)日：2004-09-28

申请号：US09551584

申请日：2000-04-18

申请人： Kazuhiko Yamauchi ,  Masayuki Kozuka ,  Kazuhiro Tsuga ,  Kaoru Murase ,  Shinichi Saeki ,  Katsuhiko Miwa

发明人： Kazuhiko Yamauchi ,  Masayuki Kozuka ,  Kazuhiro Tsuga ,  Kaoru Murase ,  Shinichi Saeki ,  Katsuhiko Miwa

IPC分类号： H04N5781

CPC分类号： H04N9/8233 ,  G09B5/065 ,  G11B7/0037 ,  G11B7/007 ,  G11B7/24085 ,  G11B27/105 ,  G11B27/3027 ,  G11B27/309 ,  G11B27/329 ,  G11B27/34 ,  G11B2020/10537 ,  G11B2220/213 ,  G11B2220/2562 ,  H04N5/85 ,  H04N5/9208 ,  H04N5/9262 ,  H04N9/8042 ,  H04N9/8045 ,  H04N9/8063 ,  H04N9/8216

摘要： A multimedia optical disc is provided. The multimedia optical disc includes a data area and a management information area. The data area stores a plurality pieces of video data. The management information area stores a channel table in which a plurality of logical channel numbers are respectively related to a plurality of physical channel numbers for each piece of video data. A piece of moving picture data and a plurality pieces of sub-data are interleaved in each piece of video data. The sub-data is either of audio data and sub-picture data as still pictures. The logical channel numbers are shared by pieces of video data. The physical channel numbers are used to physically identify the plurality pieces of sub-data. With this construction, it is possible to manage sub-data even when the sub-data is dealt with by a plurality pieces of video data.

摘要翻译： 提供多媒体光盘。 多媒体光盘包括数据区和管理信息区。 数据区域存储多条视频数据。 管理信息区域存储多个逻辑信道号分别与每条视频数据的多个物理信道号相关的信道表。 一条运动图像数据和多条子数据在每条视频数据中交错。 子数据是作为静止图像的音频数据和子图像数据中的任一个。 逻辑信道号由多条视频数据共享。 物理信道号用于物理识别多条子数据。 利用这种结构，即使当通过多条视频数据处理子数据时，也可以管理子数据。

公开(公告)号：US06480828B1

公开(公告)日：2002-11-12

申请号：US09675156

申请日：2000-09-29

申请人： Tomoyuki Okada ,  Kaoru Murase ,  Noriko Sugimoto ,  Kazuhiro Tsuga

发明人： Tomoyuki Okada ,  Kaoru Murase ,  Noriko Sugimoto ,  Kazuhiro Tsuga

IPC分类号： G10L2106

CPC分类号： G11B27/34 ,  G11B20/10527 ,  G11B27/034 ,  G11B27/036 ,  G11B27/105 ,  G11B27/3027 ,  G11B27/329 ,  G11B27/36 ,  G11B2020/10592 ,  G11B2220/216 ,  G11B2220/2562 ,  G11B2220/2575 ,  H04N5/05 ,  H04N5/85 ,  H04N9/8042 ,  H04N9/8063

摘要： The invention provides an information recording medium, such as an optical disk, having a large capacity and being capable of performing read/write operations at high speeds. The recording medium includes an audio stream prepared for after-recording data, and a audio attribute information having a bit rate information to the recorded audio stream as a management information. A recorder according to the invention has a check unit for checking, in advance, the possibility of after-recording operation of the recorder to the audio stream to be after-recorded with reference to the bit rate information of the audio attribute information.

摘要翻译： 本发明提供了一种具有大容量并且能够以高速执行读/写操作的诸如光盘的信息记录介质。 记录介质包括为后期记录数据准备的音频流和具有比特率信息的音频属性信息作为管理信息记录在记录音频流中。 根据本发明的记录器具有一个检查单元，用于参考音频属性信息的比特率信息预先检查记录器对待记录的音频流的后记录操作的可能性。

公开(公告)号：US06374042B1

公开(公告)日：2002-04-16

申请号：US09662350

申请日：2000-09-14

申请人： Shin Asada ,  Kazuhiro Tsuga ,  Kaoru Murase ,  Tomoyuki Okada

发明人： Shin Asada ,  Kazuhiro Tsuga ,  Kaoru Murase ,  Tomoyuki Okada

IPC分类号： H04N5781

CPC分类号： H04N9/8205 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00768 ,  G11B27/034 ,  G11B27/105 ,  G11B27/3027 ,  G11B27/329 ,  G11B2220/216 ,  G11B2220/2562 ,  G11B2220/2575 ,  H04N5/4401 ,  H04N5/765 ,  H04N5/775 ,  H04N5/85 ,  H04N5/913 ,  H04N7/0122 ,  H04N9/7921 ,  H04N9/8042 ,  H04N9/8063 ,  H04N21/42646 ,  H04N21/4884 ,  H04N2005/91314 ,  H04N2005/91328 ,  H04N2005/91364 ,  H04N2005/91371

摘要： A video object is recorded on an optical disc. The video object comprises at least one video object unit, and each video object unit contains control information and video data and has a presentation time of one second or shorter. The control information relates to display control and copying control for the video object unit.

摘要翻译： 视频对象被记录在光盘上。 视频对象包括至少一个视频对象单元，并且每个视频对象单元包含控制信息和视频数据，并具有一秒或更短的呈现时间。 控制信息涉及视频对象单元的显示控制和复制控制。