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    • 1. 发明授权
    • Rapid decryption of data by key synchronization and indexing
    • 通过密钥同步和索引快速解密数据
    • US07206411B2
    • 2007-04-17
    • US10640118
    • 2003-08-13
    • Steve OlivierGary L. PelkeyDavid M. PlacekKevin Kennedy
    • Steve OlivierGary L. PelkeyDavid M. PlacekKevin Kennedy
    • H04L9/00
    • H04L9/12H04H40/90H04H60/23H04L9/0662H04L2209/12H04L2209/601H04N7/1675H04N21/26606H04N21/26613H04N21/454H04N21/6143H04N21/63345
    • A satellite broadcast conditional access system with key synchronization uses indexing of an authorization stream to quickly restart the decrypting process after short carrier fades and after carrier switches. The authorization stream includes cyphered seeds and index numbers which are sequentially sent to a group of receivers. The same authorization stream can also be broadcast multiple times to the group of receivers. A conditional access server selects a starting index number and increments the index number by a predefined value. The receivers have a memory to save the current index number for the authorization stream. Any receiver that loses its connection to the broadcast and thereafter reestablishes its connection can retrieve the latest index number being issued in the authorization stream and compare it with the stored index number. When the index numbers match or are within a defined threshold, the receiver will continue to decypher the seeds and decrypt the transport stream.
    • 具有密钥同步的卫星广播条件接入系统使用授权流的索引,在短载波衰落之后和载波切换之后快速重启解密过程。 授权流包括顺序地发送到一组接收器的加密种子和索引号。 相同的授权流也可以多次广播到接收机组。 条件访问服务器选择起始索引号,并将索引号增加预定义值。 接收器具有用于保存授权流的当前索引号的存储器。 任何失去与广播连接并随后重新建立连接的接收方可以检索在授权流中发布的最新索引号码,并将其与存储的索引号进行比较。 当索引号匹配或处于定义的阈值内时,接收器将继续解密种子并解密传输流。
    • 3. 发明授权
    • Recasting DVB video system to recast digital broadcasts
    • 重新构建DVB视频系统来重现数字广播
    • US07032235B2
    • 2006-04-18
    • US10387976
    • 2003-03-12
    • Gary L. PelkeyDavid M. Placek
    • Gary L. PelkeyDavid M. Placek
    • H04N7/025H04N7/10
    • H04N21/23805G11B27/036H04N7/17309H04N21/2221H04N21/23424H04N21/235H04N21/435H04N21/44016H04N21/6118H04N21/6543
    • A central controller remotely controls and configures sets of receivers to receive programs in a broadcast signal and recast selected sets of programs to selected sets of media devices over a computer network. Each receiver has an input module that receives programs from the broadcast signal, a control module that receives a control stream from the central controller, and a recasting module that reformats and transmits selects programs over the computer network. The receivers use the control stream to configure the selected sets of programs and the selected sets of media devices. The recasting module is uncoupled from the control module so that the receiver's recasting of selected program content can be different for different sets of receivers, thereby allowing any combination of broadcast programs to be recast by any set of receivers to any set of media devices. The receiver also has a storage module and interrupts the live recasting of the broadcast signal to spool out a locally stored file.
    • 中央控制器远程控制和配置接收器组以接收广播信号中的节目,并通过计算机网络将所选择的节目集合重新选择到所选择的媒体设备集合。 每个接收机具有从广播信号接收节目的输入模块,从中央控制器接收控制流的控制模块,以及重新格式化并通过计算机网络选择节目的再造模块。 接收机使用控制流来配置所选择的节目集和所选择的媒体设备集合。 重新设计模块与控制模块分离,使得接收机对所选择的节目内容的再造可以对于不同的接收机集合是不同的,从而允许广播节目的任何组合由任何一组接收机重写到任何媒体设备集合。 接收机还具有一个存储模块,并且中断广播信号的现场再现,以排除本地存储的文件。
    • 4. 再颁专利
    • Rapid decryption of data by key synchronization and indexing
    • 通过密钥同步和索引快速解密数据
    • USRE41919E1
    • 2010-11-09
    • US12425314
    • 2009-04-16
    • Steve OlivierGary L. PelkeyDavid M. PlacekKevin Kennedy
    • Steve OlivierGary L. PelkeyDavid M. PlacekKevin Kennedy
    • H04L9/00
    • H04L9/12H04H40/90H04H60/23H04L9/0662H04L2209/12H04L2209/601H04N7/1675H04N21/26606H04N21/26613H04N21/454H04N21/6143H04N21/63345
    • A satellite broadcast conditional access system with key synchronization uses indexing of an authorization stream to quickly restart the decrypting process after short carrier fades and after carrier switches. The authorization stream includes cyphered seeds and index numbers which are sequentially sent to a group of receivers. The same authorization stream can also be broadcast multiple times to the group of receivers. A conditional access server selects a starting index number and increments the index number by a predefined value. The receivers have a memory to save the current index number for the authorization stream. Any receiver that loses its connection to the broadcast and thereafter reestablishes its connection can retrieve the latest index number being issued in the authorization stream and compare it with the stored index number. When the index numbers match or are within a defined threshold, the receiver will continue to decypher the seeds and decrypt the transport stream.
    • 具有密钥同步的卫星广播条件接入系统使用授权流的索引,在短载波衰落之后和载波切换之后快速重启解密过程。 授权流包括顺序地发送到一组接收器的加密种子和索引号。 相同的授权流也可以多次广播到接收机组。 条件访问服务器选择起始索引号,并将索引号增加预定义值。 接收器具有用于保存授权流的当前索引号的存储器。 任何失去与广播连接并随后重新建立连接的接收方可以检索在授权流中发布的最新索引号码,并将其与存储的索引号进行比较。 当索引号匹配或处于定义的阈值内时,接收器将继续解密种子并解密传输流。