公开(公告)号：US07693795B2

公开(公告)日：2010-04-06

申请号：US10655129

申请日：2003-09-05

申请人： Masato Yamamichi ,  Natsume Matsuzaki ,  Toshihisa Abe ,  Toshihisa Nakano ,  Masaya Miyazaki

发明人： Masato Yamamichi ,  Natsume Matsuzaki ,  Toshihisa Abe ,  Toshihisa Nakano ,  Masaya Miyazaki

IPC分类号： G06F21/00

CPC分类号： G06F21/10 ,  G11B20/00086 ,  G11B20/00115 ,  G11B20/00144 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00347 ,  G11B20/00492 ,  G11B20/0071 ,  G11B20/0084

摘要： Disclosed is a digital work protection system enabling a content distributor to flexibly define usage patterns of content permitted for users. The system is composed of a recording device and a playback device. The recording device acquires a digital work, range information showing a permission range within which the digital work is permitted to be used, and a subrange key for each subrange, generates an encryption key using all the acquired subrange keys, encrypts the digital work based on the encryption key to generate encryption information, and writes the encryption information and the range information to a recording medium. The playback device reads the range information and the encrypted information from the recording medium, acquires a subrange key for each subrange, generates a decryption key using all the acquired subrange keys, decrypts the encrypted information based on the decryption key to generate a digital work, and plays the digital work.

摘要翻译： 公开了一种数字作业保护系统，使得内容分发者能够灵活地定义允许用户使用的内容的使用模式。 该系统由记录装置和播放装置组成。 记录装置获取数字作品，示出允许使用数字作品的许可范围的范围信息和每个子范围的子类别密钥，使用所有获取的子分类密钥生成加密密钥，基于 用于生成加密信息的加密密钥，并将加密信息和范围信息写入记录介质。 播放装置从记录介质读取范围信息和加密信息，获取每个子范围的子范围密钥，使用所有获取的子范围密钥生成解密密钥，基于解密密钥解密加密信息以产生数字作业， 并播放数字作品。

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。

公开(公告)号：US20080275991A1

公开(公告)日：2008-11-06

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。

公开(公告)号：US07441117B2

公开(公告)日：2008-10-21

申请号：US10649678

申请日：2003-08-28

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： H04L9/32

CPC分类号： G06F21/10 ,  G06F2221/0706 ,  G06F2221/2103 ,  G06F2221/2117

摘要： A group formation/management system rigidly sets a group range, allows contents to be used freely among member devices in the group, and includes one or more registered member devices for holding common secret information unique to the group, a new member device for transmitting a request for registration in the group and receiving and holding common secret information, and a group management device for receiving the registration request from the new member device and, when the number of registered member devices is less than the maximum number of registerable member devices, outputting the common secret information to the new member device. Furthermore, because member devices are authenticated using the common secret information when contents are to be used, and contents are only delivered if the authentication is successful, member devices that do not hold the common secret information (i.e. unregistered member devices) can be prevented from using contents.

摘要翻译： 群组形成/管理系统刚性地设置组范围，允许组内的成员设备之间自由使用内容，并且包括用于保存该组唯一的公用秘密信息的一个或多个注册成员设备，用于发送组 请求在组中注册并接收和保存公用秘密信息;以及组管理装置，用于从新成员设备接收注册请求，并且当注册成员设备的数量小于可注册成员设备的最大数量时，输出 向新成员设备的通用秘密信息。 此外，由于当使用内容时会使用公用秘密信息来认证成员设备，如果认证成功，则仅传送内容，因此可以防止不保存公用秘密信息的成员设备（即，未注册的成员设备） 使用内容。

公开(公告)号：US20080196109A1

公开(公告)日：2008-08-14

申请号：US11631798

申请日：2005-07-14

申请人： Natsume Matsuzaki ,  Masaya Miyazaki ,  Yuichi Futa ,  Toshihisa Nakano ,  Hiroki Yamauchi ,  Soichiro Fujioka ,  Yuko Tsusaka

发明人： Natsume Matsuzaki ,  Masaya Miyazaki ,  Yuichi Futa ,  Toshihisa Nakano ,  Hiroki Yamauchi ,  Soichiro Fujioka ,  Yuko Tsusaka

IPC分类号： G06F21/00

CPC分类号： G06F21/10

摘要： When a PC 20 transmits a content request to a device registration apparatus 10 in which a permitted number of devices have already been registered, an expiration time management unit 105 judges whether any registration information registered in a registration list management unit 102 has an exceeded registration expiration time. If registration information with an exceeded registration expiration time is registered in the registration list management unit 102, the registration list management unit 102 deletes this registration information, and newly registers registration information of the PC 20.

摘要翻译： 当PC20向已注册了许可数量的设备的设备登记设备10发送内容请求时，期满时间管理单元105判断登记在注册表管理单元102中的任何注册信息是否具有超过的注册期满 时间。 如果在注册表管理单元102中登记了具有超过注册的期满时间的注册信息，则注册列表管理单元102删除该注册信息，并且新登记PC 20的注册信息。

公开(公告)号：US07984489B2

公开(公告)日：2011-07-19

申请号：US11631798

申请日：2005-07-14

申请人： Natsume Matsuzaki ,  Masaya Miyazaki ,  Yuichi Futa ,  Toshihisa Nakano ,  Hiroki Yamauchi ,  Soichiro Fujioka ,  Yuko Tsusaka

发明人： Natsume Matsuzaki ,  Masaya Miyazaki ,  Yuichi Futa ,  Toshihisa Nakano ,  Hiroki Yamauchi ,  Soichiro Fujioka ,  Yuko Tsusaka

IPC分类号： H04L9/00

CPC分类号： G06F21/10

摘要： When a PC transmits a content request to a device registration apparatus in which a permitted number of devices have already been registered, an expiration time management unit judges whether any registration information registered in a registration list management unit has an exceeded registration expiration time. If registration information with an exceeded registration expiration time is registered in the registration list management unit, the registration list management unit deletes this registration information, and newly registers registration information of the PC.

摘要翻译： 当PC向其中已经登记了许可数量的设备的设备注册设备发送内容请求时，期满时间管理单元判断登记在注册列表管理单元中的任何注册信息是否具有超过的注册期满时间。 如果在注册表管理单元中登记具有超过注册到期时间的注册信息，则注册列表管理单元删除该注册信息，并且新登记PC的注册信息。

公开(公告)号：US07752433B2

公开(公告)日：2010-07-06

申请号：US10649624

申请日：2003-08-28

申请人： Hiroki Yamauchi ,  Yuusaku Ohta ,  Masaya Miyazaki ,  Natsume Matsuzaki ,  Toshihisa Abe

发明人： Hiroki Yamauchi ,  Yuusaku Ohta ,  Masaya Miyazaki ,  Natsume Matsuzaki ,  Toshihisa Abe

IPC分类号： H04L29/06

CPC分类号： G11B20/0021 ,  G06F21/10 ,  G06F2221/0706 ,  G06F2221/2111 ,  G11B20/00086 ,  G11B20/00195 ,  G11B20/00224 ,  G11B20/00804 ,  G11B20/0084 ,  H04N21/43615

摘要： A content management system formed from a playback apparatus that requests and plays content, and a content management apparatus that manages duplication and deletion of content. The playback apparatus notifies group information of the playback apparatus to the content management apparatus, acquires information from the content management apparatus showing whether requests are permitted, and duplicates/deletes content. By judging whether the playback apparatus belongs to a group, and notifying whether a duplication request is permitted or rejected, based on in-group and out-group remaining numbers that show the remaining number of duplications permitted of apparatuses in-group and out-group, respectively, the content management apparatus relaxes restrictions on in-group content duplication as compared with out-group content duplication, and thus improves convenience for users in a home network, while protecting the rights of copyright holders, with respect to content duplication and usage.

摘要翻译： 由请求和播放内容的播放装置形成的内容管理系统以及管理内容的复制和删除的内容管理装置。 回放装置向内容管理装置通知播放装置的组信息，从内容管理装置获取表示是否允许请求的信息，并且复制/删除内容。 通过判断播放装置是否属于一个组，并且基于组内和组外剩余的数字来通知复制请求是否被允许或拒绝，所述剩余数字表示组内和组外的设备允许的剩余重复次数 内容管理装置与组外内容复制相比，放松了组内内容复制的限制，从而提高了家庭网络用户的便利性，同时在保护版权持有人的权利方面相对于内容复制和使用 。

公开(公告)号：US07539306B2

公开(公告)日：2009-05-26

申请号：US10649623

申请日：2003-08-28

申请人： Yuusaku Ohta ,  Hiroki Yamauchi ,  Masaya Miyazaki ,  Natsume Matsuzaki ,  Toshihisa Abe

发明人： Yuusaku Ohta ,  Hiroki Yamauchi ,  Masaya Miyazaki ,  Natsume Matsuzaki ,  Toshihisa Abe

IPC分类号： H04N7/167

CPC分类号： H04N21/43615 ,  G06F21/10 ,  G06F21/445 ,  G06F2221/2117 ,  G06F2221/2137 ,  G11B20/00086 ,  G11B20/00123 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00224 ,  G11B20/0084 ,  G11B20/00855

摘要： A key delivery apparatus that prevents improper use of contents, and manages a decryption key for decrypting encrypted content and a suppliable number showing how many times the decryption key is suppliable, with respect to one or more terminal apparatuses connected to a network. The key delivery apparatus receives a supply request for the decryption key from a terminal apparatus, and if the terminal apparatus is a legitimate supply target, judges whether the terminal apparatus is a first-type that manages a content-usage period or a second-type that does not manage the content-usage period, and if the suppliable number has a remaining number, supplies to the terminal apparatus, the decryption key and a key-usage period of the decryption key when judged that the terminal apparatus is the first-type and the decryption key when judged that the terminal apparatus is the second-type.

摘要翻译： 关于连接到网络的一个或多个终端装置，防止不正当使用内容的密钥传送装置，并且管理用于解密加密内容的解密密钥和显示解密密钥可供应多少次的可供应数量。 密钥传送装置从终端装置接收对解密密钥的供给请求，如果终端装置是合法供给对象，则判断终端装置是管理内容使用期间的第一种还是第二类型 不管理内容使用期间，如果可提供的号码具有剩余号码，则在判断为终端装置为第一类型时向终端装置提供解密密钥和解密密钥的密钥使用期间 以及当判断为终端装置是第二类型时的解密密钥。

公开(公告)号：US07188224B2

公开(公告)日：2007-03-06

申请号：US10649890

申请日：2003-08-28

申请人： Yuusaku Ohta ,  Hiroki Yamauchi ,  Masaya Miyazaki ,  Natsume Matsuzaki ,  Toshihisa Abe

发明人： Yuusaku Ohta ,  Hiroki Yamauchi ,  Masaya Miyazaki ,  Natsume Matsuzaki ,  Toshihisa Abe

IPC分类号： G06F12/14

CPC分类号： G06F21/10 ,  G11B20/00086 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00224 ,  G11B20/00746 ,  G11B20/00804 ,  G11B20/0084 ,  G11B20/00855 ,  H04L29/06 ,  H04L67/306 ,  H04L69/329

摘要： A highly-convenient content duplication management system for allowing users to duplicate a content as long as the duplication is in compliance with a given usage right. In the system, a request destination device stores a content and a permitted number of duplications of the content. In response to a duplication request, the request destination device judges whether or not the request source device is an in-group device that belongs to the same group as the request destination device. When judging that the request source device is an in-group device, the request destination device transmits the content together with a permitted number that is equal to or smaller than the currently stored permitted number. The request destination device then updates the currently stored permitted number by subtracting the permitted number transmitted.

摘要翻译： 一种高度方便的内容复制管理系统，只要复制符合给定的使用权限，允许用户复制内容。 在系统中，请求目的地装置存储内容和允许的内容的重复次数。 响应于复制请求，请求目的地设备判断请求源设备是否属于与请求目的地设备相同组的组内设备。 当判断请求源设备是组内设备时，请求目的地设备与当前存储的允许号码等于或小于的允许号码一起发送内容。 然后，请求目的地装置通过减去发送的允许号码来更新当前存储的允许号码。

公开(公告)号：US08452985B2

公开(公告)日：2013-05-28

申请号：US11886712

申请日：2006-04-07

申请人： Natsume Matsuzaki ,  Toshihisa Nakano ,  Shinichi Marui

发明人： Natsume Matsuzaki ,  Toshihisa Nakano ,  Shinichi Marui

IPC分类号： G06F11/30 ,  G06F12/14

CPC分类号： H04L9/0891 ,  H04L2209/60

摘要： The present invention provides an apparatus for securely acquiring a circuit configuration information set corresponding to a new cryptosystem without increasing the number of reconfigurable circuits. A content playback apparatus includes an FPGA that is reconfigurable. The content playback apparatus stores a decryption circuit program that shows the structure of a decryption circuit that executes decryption in accordance with a prescribed cryptosystem. The FPGA is reconfigured in accordance with the program to configure the decryption circuit. The playback apparatus acquires, from outside, an encrypted file that has been generated by encrypting a file including a decryption circuit program corresponding to the new cryptosystem in accordance with the prescribed cryptosystem, and decrypts the encrypted file by the decryption circuit.

摘要翻译： 本发明提供一种用于安全地获取与新密码系统对应的电路配置信息集的装置，而不增加可重构电路的数量。 内容播放装置包括可重新配置的FPGA。 内容重放装置存储解密电路程序，其显示根据规定的密码系统执行解密的解密电路的结构。 根据程序重新配置FPGA以配置解密电路。 回放装置从外部获取通过根据规定的密码系统加密包含与新密码系统相对应的解密电路程序的文件而生成的加密文件，并且通过解密电路解密加密文件。