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1. 发明授权

US08879730B2 System and method for bit stream compatible local link encryption 有权
标题翻译：用于比特流兼容的本地链路加密的系统和方法
公开(公告)号：US08879730B2
公开(公告)日：2014-11-04
申请号：US11221247
申请日：2005-09-06
申请人： Bradley William Walker , Matthew John Fritz , Reiner Michael Doetzkies
发明人： Bradley William Walker , Matthew John Fritz , Reiner Michael Doetzkies
IPC分类号： H04N7/167 , H04N21/41 , H04N21/4367
CPC分类号： H04N21/4122 , H04N7/1675 , H04N21/4367
摘要： In accordance with the teachings of the present invention, a system and method for bit stream compatible local link encryption are provided. In particular embodiments of the present invention, the method includes generating a random number stream using an active line count of a frame of video as an input to a first random number generator in a playback server; encrypting data at the playback server based upon a first deterministic mapping between the first random number stream and the data, wherein the first deterministic mapping prevents the generation of prohibited codes; transporting the encrypted data from the playback server to a digital video projector; generating a second random number stream using the active line count of the frame of video as an input to a second random number generator in the digital video projector; and decrypting the encrypted data at the digital video projector based upon a second deterministic mapping between the second random number stream and the encrypted data.
摘要翻译：根据本发明的教导，提供了一种用于比特流兼容的本地链路加密的系统和方法。在本发明的特定实施例中，该方法包括使用视频帧的有效行计数作为播放服务器中的第一随机数发生器的输入来生成随机数流; 基于所述第一随机数字流和所述数据之间的第一确定性映射，在所述播放服务器处加密数据，其中所述第一确定性映射防止产生被禁止的代码; 将加密数据从播放服务器传送到数字视频投影仪; 使用所述视频帧的有效行数作为数字视频投影仪中的第二随机数发生器的输入产生第二随机数流; 以及基于所述第二随机数字流和所述加密数据之间的第二确定性映射来在所述数字视频投影仪处解密所述加密数据。

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