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    Content distribution system
    1.
    发明授权
    Content distribution system 有权
    内容分发系统

    公开(公告)号：US08601590B2

    公开(公告)日：2013-12-03

    申请号：US11790609

    申请日：2007-04-26

    申请人： Toshihisa Nakano ,  Masao Nonaka ,  Yuichi Futa ,  Motoji Ohmori ,  Ryo Nojima ,  Kazukuni Kobara ,  Hideki Imai

    发明人： Toshihisa Nakano ,  Masao Nonaka ,  Yuichi Futa ,  Motoji Ohmori ,  Ryo Nojima ,  Kazukuni Kobara ,  Hideki Imai

    IPC分类号： G06F21/00 ,  G06F21/16 ,  G06F21/10

    CPC分类号： G06F21/16 ,  G06F21/10 ,  H04L9/14 ,  H04L9/3247 ,  H04L9/3263 ,  H04L2209/608

    摘要： A content distribution system for transferring contents between transmission device and reception device. The transmission device includes: key obtaining unit that obtains, from reception device, public keys and public key identifiers; watermark embedding unit that embeds a different public key identifier, as electronic watermark, into each of contents that are identical in substance; an encryption unit that encrypts contents using public keys to generate encrypted contents; and transmission unit that transmits encrypted contents to reception device. The reception device includes: key storage unit storing public keys, public key identifiers, and a private key that makes a pair with one of the public keys; key transmission unit that transmits public keys and public key identifiers to the transmission device; content receiving unit that receives encrypted contents from transmission device; and decryption unit that obtains a content from the received encrypted contents, using the private key.

    摘要翻译： 一种用于在传输设备和接收设备之间传送内容的内容分发系统。 传输设备包括：密钥获取单元，从接收设备获取公钥和公开密钥标识符; 水印嵌入单元将不同的公钥标识符作为电子水印嵌入到实质上相同的每个内容中; 加密单元，其使用公共密钥对内容进行加密以生成加密内容; 以及将加密内容发送到接收装置的发送单元。 接收装置包括：存储公共密钥的密钥存储单元，公开密钥标识符和与公钥之一成对的专用密钥; 密钥发送单元，向发送装置发送公开密钥和公开密钥标识符; 从发送装置接收加密内容的内容接收单元; 以及使用私钥从所接收的加密内容中获取内容的解密单元。

    Content distribution system
    4.
    发明申请
    Content distribution system 有权
    内容分发系统

    公开(公告)号：US20070256141A1

    公开(公告)日：2007-11-01

    申请号：US11790609

    申请日：2007-04-26

    申请人： Toshihisa Nakano ,  Masao Nonaka ,  Yuichi Futa ,  Motoji Ohmori ,  Ryo Nojima ,  Kazukuni Kobara ,  Hideki Imai

    发明人： Toshihisa Nakano ,  Masao Nonaka ,  Yuichi Futa ,  Motoji Ohmori ,  Ryo Nojima ,  Kazukuni Kobara ,  Hideki Imai

    IPC分类号： H04L9/32

    CPC分类号： G06F21/16 ,  G06F21/10 ,  H04L9/14 ,  H04L9/3247 ,  H04L9/3263 ,  H04L2209/608

    摘要： A content distribution system for transferring contents between transmission device and reception device. The transmission device includes: key obtaining unit that obtains, from reception device, public keys and public key identifiers; watermark embedding unit that embeds a different public key identifier, as electronic watermark, into each of contents that are identical in substance; an encryption unit that encrypts contents using public keys to generate encrypted contents; and transmission unit that transmits encrypted contents to reception device. The reception device includes: key storage unit storing public keys, public key identifiers, and a private key that makes a pair with one of the public keys; key transmission unit that transmits public keys and public key identifiers to the transmission device; content receiving unit that receives encrypted contents from transmission device; and decryption unit that obtains a content from the received encrypted contents, using the private key.

    摘要翻译： 一种用于在传输设备和接收设备之间传送内容的内容分发系统。 传输设备包括：密钥获取单元，从接收设备获取公钥和公开密钥标识符; 水印嵌入单元，将不同的公钥标识符作为电子水印嵌入到实质上相同的每个内容中; 加密单元，其使用公共密钥对内容进行加密以生成加密内容; 以及将加密内容发送到接收装置的发送单元。 接收装置包括：存储公共密钥的密钥存储单元，公开密钥标识符和与公钥之一成对的专用密钥; 密钥发送单元，向发送装置发送公开密钥和公开密钥标识符; 从发送装置接收加密内容的内容接收单元; 以及使用所述私钥从所接收的加密内容中获取内容的解密单元。

    Unauthorized Device Detection Device, Unauthorized Device Detection System, Unauthorized Device Detection Method, Program, Recording Medium, and Device Information Update Method
    5.
    发明申请
    Unauthorized Device Detection Device, Unauthorized Device Detection System, Unauthorized Device Detection Method, Program, Recording Medium, and Device Information Update Method 有权
    未经授权的设备检测设备，未经授权的设备检测系统，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：US20070283162A1

    公开(公告)日：2007-12-06

    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： H04L9/08 ,  G06F21/20 ,  H04N7/16 ,  H04N7/167 ,  G06F21/24

    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, playback device, unauthorized apparatus detection system, information collection device, unauthorized apparatus detection method, a program, recording medium, apparatus information update method, and integrated circuit can detect clones of a playback device. In a management server 2, a reception processing unit 241 acquires a user terminal identifier and a first random number from a user terminal targeted for unauthorized apparatus detection, judges whether a second management server random number, which is stored in a storage unit 23 in correspondence with the user terminal identifier, matches the first user terminal random number. If the two fail to match, a display unit 22 displays a message indicating that a clone exists. If the two match, a terminal information generation unit 243 generates a new random number, and writes the generated random number as the second random number in the storage unit 23. A transmission processing unit 246 transmits the generated random number to the user terminal via a transmission/reception unit 246 and the user terminal updates the first user terminal random number to the generated random number.

    摘要翻译： 未经授权的装置检测装置，回放装置，未经授权的装置检测系统，信息收集装置，未经授权的装置检测方法，程序，记录介质，装置信息更新方法和集成电路可以检测回放装置的克隆。 在管理服务器2中，接收处理单元241从针对未授权设备检测的用户终端获取用户终端标识符和第一随机数，判断存储在存储单元23中的第二管理服务器随机数是否对应 用户终端标识符与第一用户终端随机数匹配。 如果两者不匹配，则显示单元22显示指示克隆存在的消息。 如果两者匹配，终端信息生成单元243生成新的随机数，并将所生成的随机数作为第二随机数写入存储单元23。 发送处理单元246经由发送/接收单元246将生成的随机数发送给用户终端，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。

    Unauthorized Device Detection Device And Unauthorized Device Detection System
    7.
    发明申请
    Unauthorized Device Detection Device And Unauthorized Device Detection System 审中-公开
    未经授权的设备检测设备和未经授权的设备检测系统

    公开(公告)号：US20080016001A1

    公开(公告)日：2008-01-17

    申请号：US11791853

    申请日：2005-12-12

    申请人： Toshihisa Nakano ,  Masao Nonaka ,  Yuichi Futa ,  Motoji Ohmori ,  Takeshi Gomi ,  Kazukuni Kobara ,  Hideki Imai

    发明人： Toshihisa Nakano ,  Masao Nonaka ,  Yuichi Futa ,  Motoji Ohmori ,  Takeshi Gomi ,  Kazukuni Kobara ,  Hideki Imai

    IPC分类号： G06Q10/00 ,  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： To provide an unauthorized device detection system capable of finding and specifying a device that was manufactured or altered unauthorizedly. A DVD player 400a writes its own device ID to a memory card 200a. When a user purchases content, a register device 300 reads a media ID and the device ID from the memory card 200a, and transmits the media ID and the device ID to a management server device 100. The management server device 100 calculates, based on pairs of media IDs and device IDs stored beforehand and the received pair of media ID and device ID, a total number of media IDs corresponding to the received device ID, and compares the calculated total number with a threshold value. If the total number exceeds the threshold value, the management server device 100 judges that the DVD player identified by the received device ID is an unauthorized device.

    摘要翻译： 提供一种未经授权的设备检测系统，能够查找和指定未经授权制造或更改的设备。 DVD播放器400a将其自己的设备ID写入存储卡200a。 当用户购买内容时，注册设备300从存储卡200a读取媒体ID和设备ID，并将媒体ID和设备ID发送到管理服务器设备100。 管理服务器装置100基于预先存储的媒体ID和设备ID以及接收到的媒体ID和设备ID对，计算与所接收的设备ID相对应的媒体ID的总数，并将计算出的总数与 阈值。 如果总数超过阈值，则管理服务器装置100判断由接收到的设备ID识别的DVD播放机是未经授权的设备。