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    • 1. 发明申请
    • NATIVE SCRAMBLING SYSTEM
    • 本体扫描系统
    • WO2006117775A2
    • 2006-11-09
    • PCT/IL2006000367
    • 2006-03-22
    • NDS LTDSHEN-ORR CHAIMHIBSHOOSH ELIPHAZBELENKY YAACOVLEVY JORDAN
    • SHEN-ORR CHAIMHIBSHOOSH ELIPHAZBELENKY YAACOVLEVY JORDAN
    • G06F21/22
    • H04L63/0428H04N21/23476H04N21/434H04N21/44055
    • ABSTRACT A system for scrambling / descrambling packets of a stream of content, each packet having a must stay clear (MSC) section, the system including an input handler including a receiving module to receive the stream, a characteristic analyzer to analyze the stream in order to determine a data independent characteristic of each packet, and a scrambling / descrambling device operationally associated with the input handler, the scrambling / descrambling device including a receiving module to receive the data independent characteristic for each packet from the input handler, and an Initial Value module to determine an Initial Value for each packet as a function of the data independent characteristic of one of the packets being processed, wherein the scrambling / descrambling device is adapted to scramble and/or descramble the packets based on the Initial Value and a Control Word. Related apparatus and methods are included.
    • 摘要一种用于对内容流进行加扰/解扰分组的系统,每个分组必须保持清晰(MSC)部分,该系统包括一个输入处理器,包括接收模块以接收流,特征分析器按顺序分析流 确定每个分组的独立于数据的特性,以及与输入处理器操作地相关联的加扰/解扰设备,加扰/解扰设备包括接收模块,用于从输入处理器接收每个分组的独立于数据的特性,以及初始值 模块,用于根据所处理的一个数据包的数据独立特性来确定每个分组的初始值,其中所述加扰/解扰设备适于基于初始值和控制字来加扰和/或解扰分组 。 包括相关的装置和方法。
    • 3. 发明专利
    • Native scrambling system
    • AU2006242833A1
    • 2006-11-09
    • AU2006242833
    • 2006-03-22
    • NDS LTD
    • SHEN-ORR CHAIMHIBSHOOSH ELIPHAZBELENKY YAACOVLEVY JORDAN
    • G06F21/22
    • A system (10) for scrambling / descrambling packets (20,22) of a stream of content (16) is disclosed, each of the packets (20,22) having a must stay clear (MSC) section (24) which is always kept in the clear, the system (10) comprising: an input handler (12) including: a receiving module (34) to receive the stream (16); and a mask module (46) to create, for each of the packets (20,22), a data mask (48) which includes all data of the MSC section except for at least one bit of data of the MSC section; and a scrambling / descrambling device (14) operationally associated with the input handler (12), the scrambling / descrambling device (14) including: a receiving module (50) to receive the data mask (48) for each of the packets (20,22) from the input handler (12); and an Initial Value module (52) to determine an Initial Value (70) for each of the packets (20,22) as a function of the data mask (48) of one of the packets (20,22) being processed such that the Initial Value (70) is not a function of the at least one bit of data of the MSC section (24) of the one packet (20,22) being processed, the scrambling /descrambling device (14) being adapted to at least one of scramble and descramble the packets (20,22) based on the Initial Value (70) and a Control Word (62).