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    Content transmission apparatus, content reception apparatus, content transmission program, and content reception program
    2.
    发明授权
    Content transmission apparatus, content reception apparatus, content transmission program, and content reception program 失效
    内容发送装置，内容接收装置，内容发送程序和内容接收程序

    公开(公告)号：US07567674B2

    公开(公告)日：2009-07-28

    申请号：US10433068

    申请日：2002-10-03

    申请人： Yusei Nishimoto ,  Tatsuya Kurioka ,  Toshihiro Uehara ,  Seiichi Namba

    发明人： Yusei Nishimoto ,  Tatsuya Kurioka ,  Toshihiro Uehara ,  Seiichi Namba

    IPC分类号： H04L9/00

    CPC分类号： H04N21/2347 ,  H04N7/1675 ,  H04N21/4405 ,  H04N21/4408 ,  H04N21/835

    摘要： A content transmission method, a content reception method, an apparatus and a computer program using same, that improve the efficiency of descrambling a scrambled content, make the management of cryptography keys for descrambling easy, and protect the copyright of contents, are provided. A content transmission apparatus 3 that encrypts and transmits contents and a content reception apparatus 5 that receives the encrypted contents are provided. The content transmission apparatus 3 includes a content scrambling unit 7 that encrypts contents using a scrambling key Ks, a content key , a work key Kw, a master key Km, and a multiplexing unit 9 that transmits multiplexed contents. The content reception apparatus 5 includes a separating unit 13 that receives and separates the multiplexed encrypted content, and a content descrambling unit 15 that obtains the contents by descrambling encrypted information separated by the separating unit 13.

    摘要翻译： 提供对加密内容进行解扰的效率的内容发送方法，内容接收方法，装置和计算机程序，提供对解密的密码密钥的管理容易，保护内容的版权。 提供加密发送内容的内容发送装置3和接收加密内容的内容接收装置5。 内容发送装置3包括使用加密密钥Ks，内容密钥，工作密钥Kw，主密钥Km和发送多路复用内容的复用单元9对内容进行加密的内容加扰单元7。 内容接收装置5包括分离单元13，其分离多路复用的加密内容，以及内容解扰单元15，其通过对由分离单元13分离的加密信息进行解扰来获得内容。

    Diligent control of preview of stored contents
    3.
    发明申请
    Diligent control of preview of stored contents 失效
    对存储内容的预览的有效控制

    公开(公告)号：US20060155989A1

    公开(公告)日：2006-07-13

    申请号：US10524601

    申请日：2003-08-15

    申请人： Yusei Nishimoto ,  Tatsuya Kurioka ,  Seiichi Namba

    发明人： Yusei Nishimoto ,  Tatsuya Kurioka ,  Seiichi Namba

    IPC分类号： H04L9/00

    CPC分类号： H04N21/44204 ,  H04N5/913 ,  H04N7/1675 ,  H04N21/2347 ,  H04N21/26606 ,  H04N21/4325 ,  H04N21/4405 ,  H04N21/4627 ,  H04N21/47211 ,  H04N21/63345 ,  H04N21/8355 ,  H04N21/8549 ,  H04N2005/91364

    摘要： A method of transmitting contents, which are to be received at a reception side where a portion of the contents is previewed while the contents are not accessible for playing other than for a preview purpose, includes the steps of encrypting the contents by a first encryption key, generating information indicative of an elapsed time of the contents that indicates a relationship between positions on a time axis of the contents representing an amount of time that passes as the contents are played and a time count that accrues as a preview time when the contents are previewed, encrypting the first encryption key and the information indicative of an elapsed time of the contents by a second encryption key, thereby generating first encrypted information, encrypting the second encryption key and content-usage control information by a third encryption key, thereby generating second encrypted information, the content-usage control information indicating usage of the contents on the reception side, and transmitting the encrypted contents, the first encrypted information, and the second encrypted information to the reception side.

    摘要翻译： 一种发送内容的方法，其中，在内容不能访问内容不能预览的情况下，在内容的一部分被预览的接收侧被接收的内容包括以下步骤：通过第一加密密钥对内容进行加密 生成指示内容的经过时间的信息，该内容指示表示作为播放内容的通过的时间量的内容的时间轴上的位置与当内容为期间的预览时间之间的时间计数之间的关系 通过第二加密密钥加密第一加密密钥和指示内容的经过时间的信息，从而生成第一加密信息，通过第三加密密钥加密第二加密密钥和内容使用控制信息，从而产生第二加密密钥 加密信息，指示在接收si上内容的使用的内容使用控制信息 de，并且将加密内容，第一加密信息和第二加密信息发送到接收方。

    Diligent control of preview of stored contents
    4.
    发明授权
    Diligent control of preview of stored contents 失效
    对存储内容的预览的有效控制

    公开(公告)号：US07380135B2

    公开(公告)日：2008-05-27

    申请号：US10524601

    申请日：2003-08-15

    申请人： Yusei Nishimoto ,  Tatsuya Kurioka ,  Seiichi Namba

    发明人： Yusei Nishimoto ,  Tatsuya Kurioka ,  Seiichi Namba

    IPC分类号： G06F11/30 ,  H04L9/00 ,  H04N7/167

    CPC分类号： H04N21/44204 ,  H04N5/913 ,  H04N7/1675 ,  H04N21/2347 ,  H04N21/26606 ,  H04N21/4325 ,  H04N21/4405 ,  H04N21/4627 ,  H04N21/47211 ,  H04N21/63345 ,  H04N21/8355 ,  H04N21/8549 ,  H04N2005/91364

    摘要： A method of transmitting contents, which are to be received at a reception side where a portion of the contents is previewed while the contents are not accessible for playing other than for a preview purpose, includes the steps of encrypting the contents by a first encryption key, generating information indicative of an elapsed time of the contents that indicates a relationship between positions on a time axis of the contents representing an amount of time that passes as the contents are played and a time count that accrues as a preview time when the contents are previewed, encrypting the first encryption key and the information indicative of an elapsed time of the contents by a second encryption key, thereby generating first encrypted information, encrypting the second encryption key and content-usage control information by a third encryption key, thereby generating second encrypted information, the content-usage control information indicating usage of the contents on the reception side, and transmitting the encrypted contents, the first encrypted information, and the second encrypted information to the reception side.

    摘要翻译： 一种发送内容的方法，其中，在内容不能访问内容不能预览的情况下，在内容的一部分被预览的接收侧被接收的内容包括以下步骤：通过第一加密密钥对内容进行加密 生成指示内容的经过时间的信息，该内容指示表示作为播放内容的通过的时间量的内容的时间轴上的位置与当内容为期间的预览时间之间的时间计数之间的关系 通过第二加密密钥加密第一加密密钥和指示内容的经过时间的信息，从而生成第一加密信息，通过第三加密密钥加密第二加密密钥和内容使用控制信息，从而产生第二加密密钥 加密信息，指示在接收si上内容的使用的内容使用控制信息 de，并且将加密内容，第一加密信息和第二加密信息发送到接收方。

    Method for distributing contents
    5.
    发明申请
    Method for distributing contents 审中-公开
    分发内容的方法

    公开(公告)号：US20050004946A1

    公开(公告)日：2005-01-06

    申请号：US10847880

    申请日：2004-05-19

    申请人： Yasushi Kawamoto ,  Eriko Koda ,  Yasuyuki Ooki ,  Tatsuya Kurioka ,  Yusei Nishimoto ,  Akitsugu Baba

    发明人： Yasushi Kawamoto ,  Eriko Koda ,  Yasuyuki Ooki ,  Tatsuya Kurioka ,  Yusei Nishimoto ,  Akitsugu Baba

    IPC分类号： G06F13/00 ,  G06F17/30 ,  H04H1/00 ,  H04H60/54 ,  H04H60/73 ,  G06F7/00

    CPC分类号： H04H60/73 ,  G06F16/48 ,  H04H60/54

    摘要： A method of distributing contents in a system including a distribution station for distributing contents, a relay station for relaying the contents, a management apparatus for receiving the contents distributed from the distribution station or the relay station and managing the contents, and a plurality of terminal apparatuses for receiving the contents distributed from the management apparatus, the method comprising the steps of: attaching metadata to the contents distributed from the distribution station; and adding location information of the relay station, the management apparatus or each of the terminal apparatuses to the metadata of the contents when the contents are stored in the relay station, the management apparatus or the terminal apparatus. The contents can be displayed on the user side concentratedly regardless of locations of the contents so that the contents can be acquired or played back without user's consciousness of locations of the large number of contents.

    摘要翻译： 一种在包括用于分发内容的分发站的系统中分发内容的方法，用于中继内容的中继站，用于接收从分发站或中继站分发的内容并管理内容的管理装置，以及多个终端 用于接收从管理装置分发的内容的装置，所述方法包括以下步骤：将元数据附加到从分发站分配的内容; 以及当内容被存储在中继站，管理装置或终端装置中时，将中继站，管理装置或每个终端装置的位置信息添加到内容的元数据。 内容可以集中显示在用户侧，而不管内容的位置如何，以便在没有用户对大量内容的位置的意识的情况下可以获取或重放内容。