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1. 发明授权

US09003188B2 Recording medium device, terminal device, distribution device, control method, and program recording medium 有权
标题翻译：记录介质装置，终端装置，分配装置，控制方法和程序记录介质
公开(公告)号：US09003188B2
公开(公告)日：2015-04-07
申请号：US13597929
申请日：2012-08-29
申请人： Takahiro Yamaguchi , Yuichi Futa , Toshihisa Nakano
发明人： Takahiro Yamaguchi , Yuichi Futa , Toshihisa Nakano
IPC分类号： G06F15/16 , H04L9/32 , G06F21/10 , G11B20/00 , H04N21/258 , H04N21/433 , H04N21/8355
CPC分类号： G06F21/10 , G06F2221/0724 , G11B20/00181 , G11B20/00195 , G11B20/00224 , G11B20/00427 , G11B20/00847 , G11B2220/2541 , H04L9/32 , H04L9/3268 , H04L2209/60 , H04N21/2585 , H04N21/4334 , H04N21/8355
摘要： When the terminal device attempts to use a special content, which has an attribute including information distinguishing the special content from regular contents and is stored in the recording medium device, the recording medium device refers to the revocation information indicating terminal devices restricted from using the special content. When the recording medium device determines the terminal device as a terminal device to be restricted from using the special content based on the terminal identifying information of the terminal device, the usage information output unit of the recording medium device does not transmit the necessary information for using the special content to the terminal device.
摘要翻译：当终端设备尝试使用具有包括将特殊内容与正常内容区分开的信息的属性并且存储在记录介质设备中的特殊内容时，记录介质设备参考指示终止设备的撤销信息，禁止使用特殊内容内容。当记录介质设备基于终端设备的终端识别信息将终端设备确定为要被限制的终端设备使用特殊内容时，记录介质设备的使用信息输出单元不发送必要的使用信息特殊内容给终端设备。

2. 发明授权

US08874936B2 Terminal device, verification device, key distribution device, content playback method, key distribution method, and recording medium 有权
标题翻译：终端设备，验证设备，密钥分配设备，内容回放方法，密钥分发方法和记录介质
公开(公告)号：US08874936B2
公开(公告)日：2014-10-28
申请号：US13591408
申请日：2012-08-22
申请人： Takahiro Yamaguchi , Yuichi Futa , Toshihisa Nakano
发明人： Takahiro Yamaguchi , Yuichi Futa , Toshihisa Nakano
IPC分类号： H04L9/00 , G06F21/62 , H04L9/32
CPC分类号： H04L63/0876 , G06F21/6209 , H04L9/083 , H04L9/0891 , H04L9/3247 , H04L9/3263 , H04L9/3273 , H04L2209/60
摘要： The terminal device 600 comprises: a read unit configured to read encrypted content and a content signature from a regular region of a recording medium device 700, and to read a converted title key from an authorized region of the recording medium device 700, the converted title key having been converted from a title key with use of a content signature generated by an authorized signature device 500; a title key reconstruction unit configured to generate a reconstructed title key by reversely converting the converted title key with use of the content signature read by the read unit; and a playback unit configured to decrypt the encrypted content with use of the reconstructed title key to obtain decrypted content, and to play back the decrypted content.
摘要翻译：终端装置600包括：读取单元，被配置为从记录介质装置700的规则区域读取加密内容和内容签名，并且从记录介质装置700的授权区域读取转换的标题密钥，转换的标题密钥已经使用由授权签名装置500生成的内容签名从标题密钥转换; 标题密钥重构单元，被配置为通过使用由所述读取单元读取的内容签名来逆转换转换的标题密钥来生成重构的标题密钥; 以及重放单元，被配置为使用重构的标题密钥对加密的内容进行解密以获得解密的内容，并且回放解密的内容。

3. 发明申请

US20130061053A1 RECORDING MEDIUM DEVICE, TERMINAL DEVICE, DISTRIBUTION DEVICE, CONTROL METHOD, AND PROGRAM RECORDING MEDIUM 有权
标题翻译：记录介质设备，终端设备，分发设备，控制方法和程序记录介质
公开(公告)号：US20130061053A1
公开(公告)日：2013-03-07
申请号：US13597929
申请日：2012-08-29
申请人： Takahiro Yamaguchi , Yuichi Futa , Toshihisa Nakano
发明人： Takahiro Yamaguchi , Yuichi Futa , Toshihisa Nakano
IPC分类号： H04L9/32 , G06F21/00
CPC分类号： G06F21/10 , G06F2221/0724 , G11B20/00181 , G11B20/00195 , G11B20/00224 , G11B20/00427 , G11B20/00847 , G11B2220/2541 , H04L9/32 , H04L9/3268 , H04L2209/60 , H04N21/2585 , H04N21/4334 , H04N21/8355
摘要： When the terminal device 500 attempts to use a special content, which has an attribute including information distinguishing the special content from regular contents and which is stored in the recording medium device 600, the recording medium device 600 refers to the revocation information indicating terminal devices restricted from using the special content. When the recording medium device 600 determines the terminal device 500 as a terminal device to be restricted from using the special content based on the terminal identifying information of the terminal device 500, the usage information output unit of the recording medium device 600 does not transmit the necessary information for using the special content to the terminal device 500.
摘要翻译：当终端设备500尝试使用具有包括区分特殊内容的信息与常规内容并且存储在记录介质设备600中的信息的特殊内容时，记录介质设备600参考指示终端设备被限制的撤销信息从使用特殊内容。当记录介质装置600基于终端装置500的终端识别信息将终端装置500确定为要限制的终端装置使用特殊内容时，记录介质装置600的使用信息输出单元不发送将特殊内容用于终端装置500的必要信息。

4. 发明申请

US20130054971A1 TERMINAL DEVICE, VERIFICATION DEVICE, KEY DISTRIBUTION DEVICE, CONTENT PLAYBACK METHOD, KEY DISTRIBUTION METHOD, AND COMPUTER PROGRAM 有权
公开(公告)号：US20130054971A1
公开(公告)日：2013-02-28
申请号：US13591408
申请日：2012-08-22
申请人： Takahiro YAMAGUCHI , Yuichi Futa , Toshihisa Nakano
发明人： Takahiro YAMAGUCHI , Yuichi Futa , Toshihisa Nakano
IPC分类号： H04L9/08 , H04L9/32
CPC分类号： H04L63/0876 , G06F21/6209 , H04L9/083 , H04L9/0891 , H04L9/3247 , H04L9/3263 , H04L9/3273 , H04L2209/60
摘要： The terminal device 600 comprises: a read unit configured to read encrypted content and a content signature from a regular region of a recording medium device 700, and to read a converted title key from an authorized region of the recording medium device 700, the converted title key having been converted from a title key with use of a content signature generated by an authorized signature device 500; a title key reconstruction unit configured to generate a reconstructed title key by reversely converting the converted title key with use of the content signature read by the read unit; and a playback unit configured to decrypt the encrypted content with use of the reconstructed title key to obtain decrypted content, and to play back the decrypted content.

5. 发明授权

US08386606B2 Group formation/management system, group management device, and member device 有权
标题翻译：集团组建/管理系统，集团管理设备和会员设备
公开(公告)号：US08386606B2
公开(公告)日：2013-02-26
申请号：US12173531
申请日：2008-07-15
申请人： Natsume Matsuzaki , Toshihisa Abe , Toshihisa Nakano , Yuichi Futa , Masaya Miyazaki
发明人： Natsume Matsuzaki , Toshihisa Abe , Toshihisa Nakano , Yuichi Futa , Masaya Miyazaki
IPC分类号： G06F15/173
CPC分类号： G06F21/10 , G06F2221/0706 , G06F2221/2103 , G06F2221/2117
摘要： A group management device provides with a content a device included in a group managed by the group management device. The group management device includes a storage unit that stores a total number of remote device that the group management device currently registers, a maximum number of remote devices that the group management device is permitted to register, a total number of local device that the group management device currently registers, and a maximum number of local devices that the group management device is permitted to register. The group management device also includes a judging unit that judges whether the total number of the remote device exceeds the maximum number of the remote devices when it is judged that the one device is the remote device. The judging unit judges whether the total number of the local device exceeds the maximum number of the local devices when it is judged that the one device is the local device.
摘要翻译：组管理装置向组管理装置管理的组中包含的装置提供内容。组管理装置包括存储单元，存储组管理装置当前登记的远程设备的总数，组管理装置允许登记的最大数量的远程设备，组管理的本地设备的总数设备当前注册，允许组管理设备注册的本地设备的最大数量。组管理装置还包括判断单元，当判断为一个设备是远程设备时，该判断单元判断远程设备的总数是否超过远程设备的最大数量。当判断为一个设备是本地设备时，判断单元判断本地设备的总数是否超过本地设备的最大数量。

6. 发明授权

US08132024B2 Digital work protection system, recording apparatus, reproduction apparatus, and recording medium 有权
标题翻译：数字工作保护系统，记录装置，再现装置和记录介质
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。

7. 发明授权

US07949703B2 Group admission system and server and client therefor 有权
标题翻译：集体录取系统及服务器及客户端
公开(公告)号：US07949703B2
公开(公告)日：2011-05-24
申请号：US10751964
申请日：2004-01-07
申请人： Natsume Matsuzaki , Toshihisa Nakano , Yuichi Futa
发明人： Natsume Matsuzaki , Toshihisa Nakano , Yuichi Futa
IPC分类号： G06F15/16
CPC分类号： H04L29/06 , G06F21/10 , G06F2209/505 , G06F2221/0706 , H04L67/1002 , H04L67/1008 , H04L67/101 , H04L67/1021 , H04L67/125 , H04L67/2814
摘要： Disclosed is a group admission system having a client and a server that belongs to a closed group within which contents are available. The client determines whether it is permissible to request to join the group to be a member device thereof based on the number of groups that the client is in and the maximum number of groups that the client is permitted to be in. If permissible, the client transmits a registration request to the server with information unique to the client. The server determines whether to permit the client to join the group by registering with the server based on the number of member devices registered with the server and the maximum number of member devices registerable with the server. If it is permitted, the server registers the unique information, and transmits group identification information to the client. The client receives and stores the group identification information.
摘要翻译：公开了具有客户端和属于内容可用的封闭组的服务器的组准许系统。客户端根据客户端所在的组数和允许客户端的最大组数确定是否允许请求加入组成为其成员设备。如果允许，客户端使用客户端唯一的信息向服务器发送注册请求。服务器根据登录服务器的成员设备号和服务器可登录的成员设备的最大数量，确定是否允许客户端通过向服务器注册来加入组。如果允许，则服务器注册唯一信息，并将组标识信息发送给客户端。客户端接收并存储组标识信息。

8. 发明授权

US07900062B2 Unauthorized contents detection system 有权
标题翻译：未经授权的内容检测系统
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。

9. 发明授权

US07617536B2 Unauthorized device detection device, unauthorized device detection system, unauthorized device detection method, program, recording medium, and device information update method 有权
标题翻译：未经授权的设备检测设备，未授权设备检测系统，未经授权的设备检测方法，程序，记录介质和设备信息更新方法
公开(公告)号：US07617536B2
公开(公告)日：2009-11-10
申请号：US10589288
申请日：2005-12-12
申请人： Masao Nonaka , Toshihisa Nakano , Yuichi Futa , Motoji Ohmori , Takeshi Gomi , Kazukuni Kobara , Hideki Imai
发明人： Masao Nonaka , Toshihisa Nakano , Yuichi Futa , Motoji Ohmori , Takeshi Gomi , Kazukuni Kobara , Hideki Imai
IPC分类号： G06F17/30
CPC分类号： H04L9/083 , G06F21/10 , G06F2221/0764 , G11B20/00086 , G11B20/00195 , G11B20/0021 , G11B20/00528 , G11B20/00688 , G11B20/00862 , G11B2220/2562 , H04L9/0822 , H04L2209/60
摘要： An unauthorized apparatus detection device detecting clones of a playback device. In a management server, a reception processing unit acquires a user terminal identifier and a first random number of a user terminal, judges whether a second management server random number, which is stored in a storage unit in correspondence with the user terminal identifier, matches the first user terminal random number. If the two fail to match, a display unit displays a message indicating that a clone exists. If the two match, a terminal information generation unit generates a new random number, and writes the generated random number as the second random number in the storage unit. A transmission processing unit transmits the generated random number to the user terminal via a transmission/reception unit and the user terminal updates the first user terminal random number to the generated random number.
摘要翻译：检测回放装置的克隆的未经授权的装置检测装置。在管理服务器中，接收处理单元获取用户终端标识符和用户终端的第一随机数，判断与用户终端标识符对应地存储在存储单元中的第二管理服务器随机数是否与第一个用户终端随机数。如果两者不匹配，显示单元将显示一条消息，指示克隆存在。如果两者匹配，则终端信息生成单元生成新的随机数，并将生成的随机数作为第二随机数写入存储单元。发送处理单元经由发送/接收单元向用户终端发送生成的随机数，并且用户终端将第一用户终端随机数更新为所生成的随机数。

10. 发明申请

US20080022416A1 Content Management System and Content Management Unit 有权
标题翻译：内容管理系统和内容管理单元
公开(公告)号：US20080022416A1
公开(公告)日：2008-01-24
申请号：US11632863
申请日：2005-07-13
申请人： Hiroki Yamauchi , Natsume Matsuzaki , Yuichi Futa , Toshihisa Nakano
发明人： Hiroki Yamauchi , Natsume Matsuzaki , Yuichi Futa , Toshihisa Nakano
IPC分类号： G06F21/22
CPC分类号： G06F21/10 , G06F2221/2137
摘要： A content management system which can prevent a content from being copied exceeding the limited number of copies for the content. The content management system includes a first content management device and a second content management device. The first content management device stores period information that indicates an available period during which a first external device is permitted to use a copied content which has been copied from the content, and outputs the period information to the second content management device when the content is moved. Upon receiving the period information from the first content management device, the second content management device judges whether the available period of the copied content has expired, using the received period information, and if it is judges that the available period has not expired, it inhibits the content from being copied to the second external device.
摘要翻译：一种内容管理系统，其可以防止内容被复制超过该内容的有限数量的副本。内容管理系统包括第一内容管理装置和第二内容管理装置。第一内容管理装置存储指示允许第一外部装置使用从内容复制的复制内容的可用期间的周期信息，并且当内容移动时将该周期信息输出到第二内容管理装置。在从第一内容管理装置接收到期间信息的情况下，第二内容管理装置使用接收到的周期信息来判断复制内容的可用期间是否到期，如果判断为可用期间未到期，则抑制将内容从复制到第二个外部设备。

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