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    • 9. 发明申请
    • METHODS AND APPARATUS FOR CONDITIONAL ACCESS OF NON REAL-TIME CONTENT IN A DISTRIBUTION SYSTEM
    • 用于分配系统中非实时内容的条件访问的方法和装置
    • WO2009102923A2
    • 2009-08-20
    • PCT/US2009/034010
    • 2009-02-13
    • QUALCOMM INCORPORATEDKANNAN, PrasannaCHEN, An MeiNAGARAJ, Thadi M.
    • KANNAN, PrasannaCHEN, An MeiNAGARAJ, Thadi M.
    • H04L29/06H04L12/22
    • H04L63/062H04L63/10H04N7/1675H04N21/26606H04N21/63345
    • Methods and apparatus for conditional access of non real-time (NRT) content in a distribution system. A method includes encrypting NRT content with a control word (CW) to generate encrypted NRT content, providing the CW to entitlement control message (ECM) generators, receiving ECMs from the ECM generators, wherein each ECM comprises a unique encryption of the CW to provide conditional access to the CW, and providing the encrypted NRT content and the ECMs for transmission over a distribution network. An apparatus includes a synchronizer configured to provide a CW to ECM generators and receive ECMs from the ECM generators, wherein each ECM comprises a unique encryption of the CW to provide conditional access to the CW, and a management module configured to encrypt the NRT content with the CW to generate encrypted NRT content and provide the encrypted NRT content and the ECMs for transmission over the distribution network.
    • 用于分发系统中非实时(NRT)内容条件访问的方法和装置。 一种方法包括用控制字(CW)对NRT内容进行加密以产生加密的NRT内容,向CW授权控制消息(ECM)生成器提供CW,从ECM生成器接收ECM,其中每个ECM包括CW的唯一加密以提供 对CW进行条件访问,以及提供加密的NRT内容和ECM,用于通过分发网络进行传输。 一种装置,包括配置成向ECM发生器提供CW并从ECM发生器接收ECM的同步器,其中每个ECM包括CW的唯一加密以提供对CW的条件访问,以及管理模块,其被配置为用 CW产生加密的NRT内容,并提供经加密的NRT内容和ECM,用于通过分发网络进行传输。