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。

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：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.

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：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：US20080127279A1

公开(公告)日：2008-05-29

申请号：US11632349

申请日：2005-07-13

申请人： Yuichi Futa ,  Natsume Matsuzaki ,  Hiroki Yamauchi ,  Toshihisa Nakano

发明人： Yuichi Futa ,  Natsume Matsuzaki ,  Hiroki Yamauchi ,  Toshihisa Nakano

IPC分类号： H04N7/18

CPC分类号： H04L63/08 ,  H04L9/12 ,  H04L9/3297 ,  H04L2209/60 ,  H04L2463/121

摘要： The present invention aims to provide a time authentication device for distinguishing clocks that show a time falling within the predetermined permissible range as compared with a time shown by the time authentication device. In a time authentication device embodied as a distribution device 11, a time-relation information storage unit 104 stores a playback-device-time measured by a clock unit 203 of a playback device 12, and also stores a distribution-device-time measured by a clock unit 103 when the playback-device-time is acquired. The time authentication unit 107 acquires from the playback device 12 a target time measured by the clock unit 203, and also acquires an authentication time measured by the clock unit when the target time is received. The time authentication unit 107 then calculates a first difference (=Authentication Time−Distribution-Device-Time), a second difference (=Target Time−Playback-Device-Time), an authentication difference (=First Difference−Second Difference). If the authentication difference is smaller than or equal to a predetermined threshold, the time authentication unit 107 judges that the clock unit 203 of the playback device 12 is valid.

摘要翻译： 本发明的目的在于提供一种时间认证装置，用于与时间认证装置所示的时间相比，区分表示时间在预定容许范围内的时钟。 在实现为分发装置11的时间认证装置中，时间关系信息存储单元104存储由重放装置12的时钟单元203测量的重放装置时间，并且还存储由播放装置12的时间单元203测量的分发装置时间 当获取重放设备时间时的时钟单元103。 时间认证单元107从重放设备12获取由时钟单元203测量的目标时间，并且还在接收到目标时间时获取由时钟单元测量的认证时间。 时间认证单元107然后计算第一差值（=认证时间分配 - 设备时间），第二差值（=目标时间播放 - 设备时间），认证差异（=第一差异 - 第二差）。 如果认证差异小于或等于预定阈值，则时间认证单元107判断回放设备12的时钟单元203是有效的。

公开(公告)号：US08220064B2

公开(公告)日：2012-07-10

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： H04L9/00

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。

公开(公告)号：US07979731B2

公开(公告)日：2011-07-12

申请号：US11632349

申请日：2005-07-13

申请人： Yuichi Futa ,  Natsume Matsuzaki ,  Hiroki Yamauchi ,  Toshihisa Nakano

发明人： Yuichi Futa ,  Natsume Matsuzaki ,  Hiroki Yamauchi ,  Toshihisa Nakano

IPC分类号： G06F1/00 ,  G06F7/04 ,  G06F17/30 ,  H04L9/32 ,  H04N7/18 ,  H04N7/16

CPC分类号： H04L63/08 ,  H04L9/12 ,  H04L9/3297 ,  H04L2209/60 ,  H04L2463/121

摘要： A time authentication device identifies clocks that show a time falling within the predetermined permissible range as compared with a time shown by the time authentication device. In a time authentication device embodied as a distribution device, a time-relation information storage unit stores a playback-device-time measured by a clock unit of a playback device, and also stores a distribution-device-time measured by a clock unit when the playback-device-time is acquired. The time authentication unit acquires from the playback device a target time measured by the clock unit, and also acquires an authentication time measured by the clock unit when the target time is received. The time authentication unit then calculates a first difference, a second difference, an authentication difference. If the authentication difference is smaller than or equal to a predetermined threshold, the time authentication unit judges that the clock unit of the playback device is valid.

摘要翻译： 与时间认证装置所示的时间相比，时间认证装置识别出显示与预定允许范围内的时间的时钟。 在体现为分发装置的时间认证装置中，时间关系信息存储单元存储由重放装置的时钟单元测量的重放装置时间，并且还存储由时钟单元测量的分配装置时间 获取播放设备时间。 时间认证单元从重放设备获取由时钟单元测量的目标时间，并且还获取当接收到目标时间时由时钟单元测量的认证时间。 时间认证单元然后计算第一差异，第二差异，认证差异。 如果认证差异小于或等于预定阈值，则时间认证单元判断播放设备的时钟单元有效。

公开(公告)号：US08189773B2

公开(公告)日：2012-05-29

申请号：US11918628

申请日：2006-04-21

申请人： Toshihisa Nakano ,  Natsume Matsuzaki ,  Shinichi Marui

发明人： Toshihisa Nakano ,  Natsume Matsuzaki ,  Shinichi Marui

IPC分类号： H04L9/10

CPC分类号： H04L9/0894

摘要： An information processing apparatus includes a reconfigurable unit in which a circuit is reconfigured. A generation unit generates design data for the circuit configured by the reconfigurable unit and reduces the amount of design data to be held by a design data storage unit.

摘要翻译： 信息处理装置包括其中电路被重新配置的可重新配置单元。 生成单元生成由可重构单元配置的电路的设计数据，并且减少由设计数据存储单元保持的设计数据的数量。