Content reproduction apparatus, program, and content reproduction control method
    1.
    发明申请
    Content reproduction apparatus, program, and content reproduction control method 审中-公开
    内容再现装置,程序和内容再现控制方法

    公开(公告)号:US20050238325A1

    公开(公告)日:2005-10-27

    申请号:US11096127

    申请日:2005-04-01

    CPC分类号: G06F21/10 G06F2221/2137

    摘要: A copyright management system that manages the time limits of the reproduction of a plurality of pieces of content in a batch manner. A content reproduction apparatus has a storage unit storing a reproduction permission ID list and the valid period information of each group ID and a reproduction control block for controlling the reproduction of content data attached with the group ID. The reproduction control block reads the group ID from content data and, if the read group ID is contained in the reproduction permission ID list and the current time is not in excess of the valid period of this group ID, permits the reproduction of the content data; if the read group ID is not contained in the reproduction permission ID list or the current time is in excess of the valid period of this group ID, the reproduction control block restricts the reproduction of the content data.

    摘要翻译: 一种版权管理系统,其以分批的方式管理多条内容的再现的时间限制。 内容再现装置具有:存储单元,存储复制许可ID列表和每个组ID的有效期间信息;以及再现控制块,用于控制附加有组ID的内容数据的再现。 再现控制块从内容数据中读取组ID,如果读取组ID包含在再现许可ID列表中,当前时间不超过该组ID的有效期限,则允许内容数据的再现 ; 如果读取组ID不包含在再现许可ID列表中或当前时间超过该组ID的有效期限,则再现控制块限制内容数据的再现。

    Information processing device, information processing method, and program
    8.
    发明授权
    Information processing device, information processing method, and program 有权
    信息处理装置,信息处理方法和程序

    公开(公告)号:US08819406B2

    公开(公告)日:2014-08-26

    申请号:US13208391

    申请日:2011-08-12

    IPC分类号: H04L29/06

    摘要: An information processing device including: a data processing unit that generates content for transmitting to a client; and a communication unit that transmits the generated content of the data processing unit, wherein the data processing unit generates, based on basic encrypted content having a plurality of units that each includes a SEED that is data for encryption key generation and a block that is encrypted data that is encrypted by an encryption key generated using the SEED, each data of (a) converted encrypted content on which conversion processing to replace the SEED with dummy data or to delete the SEED is performed, and (b) encrypted SEED that is the SEED encrypted by content transmission processing or by individual keys that are different by units of users at a transmission destination, and transmits the generated converted encrypted content and encrypted SEED as data provided to the client via the communication unit.

    摘要翻译: 一种信息处理设备,包括:数据处理单元,生成用于发送给客户端的内容; 以及通信单元,其发送所述数据处理单元的所生成的内容,其中,所述数据处理单元基于具有多个单元的基本加密内容生成,所述多个单元包括作为用于加密密钥生成的数据的SEED和被加密的块 通过使用SEED生成的加密密钥进行加密的数据,(a)转换后的加密内容的数据被执行,所述转换加密内容在其上进行用虚拟数据替换SEED的转换处理或删除SEED,以及(b)加密的SEED, 通过内容发送处理或由发送目的地的用户单位不同的各个密钥加密的SEED,并且经由通信单元将生成的转换加密内容和加密SEED作为提供给客户端的数据发送。

    Information recording medium, information processing device and method
    10.
    发明申请
    Information recording medium, information processing device and method 审中-公开
    信息记录介质,信息处理装置及方法

    公开(公告)号:US20060178993A1

    公开(公告)日:2006-08-10

    申请号:US10549293

    申请日:2004-05-14

    IPC分类号: G06Q99/00

    摘要: There is provided the present invention to prevent illegal copying of recorded information and enable flexible management of contents, and further facilitate improvement of copy protection technology and the like. A key obtaining module (2) is recorded on a read-only information recording medium (1) to which a copy protection technology is applied. A reproducing module (3) safely obtains a media key unique to the key obtaining module (2) from the key obtaining module (2), generates a content key from the media key, and decrypts an encrypted content (4) using the content key and reproduces the content. In this case, while the key obtaining module (2) needs to be present on the information recording medium (1), the reproducing module (3) and the encrypted content (4) do not need to be present on the information recording medium (1) and may be present outside the information recording medium (1).

    摘要翻译: 提供了本发明以防止记录信息的非法复制并且能够灵活地管理内容,并且进一步便于改进复制保护技术等。 密钥获取模块(2)被记录在应用了复制保护技术的只读信息记录介质(1)上。 再现模块(3)从密钥获取模块(2)安全地获得密钥获取模块(2)唯一的媒体密钥,从媒体密钥生成内容密钥,并使用内容密钥解密加密的内容(4) 并再现内容。 在这种情况下,当密钥获取模块(2)需要存在于信息记录介质(1)上时,再现模块(3)和加密内容(4)不需要存在于信息记录介质上 1),并且可以存在于信息记录介质(1)的外部。