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    • 9. 发明授权
    • System and method for bit stream compatible local link encryption
    • 用于比特流兼容的本地链路加密的系统和方法
    • US08879730B2
    • 2014-11-04
    • US11221247
    • 2005-09-06
    • Bradley William WalkerMatthew John FritzReiner Michael Doetzkies
    • Bradley William WalkerMatthew John FritzReiner Michael Doetzkies
    • H04N7/167H04N21/41H04N21/4367
    • H04N21/4122H04N7/1675H04N21/4367
    • 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.
    • 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。
    • 10. 发明授权
    • System and method for transporting an ancillary data packet in the active area of a video stream
    • 用于在视频流的活动区域中传送辅助数据分组的系统和方法
    • US08724023B2
    • 2014-05-13
    • US11221086
    • 2005-09-06
    • Bradley William WalkerMatthew John Fritz
    • Bradley William WalkerMatthew John Fritz
    • H04N7/167H04N7/00
    • H04N21/4122H04N7/1675H04N21/4367H04N21/4405H04N21/4408
    • In accordance with the teachings of the present invention, a system and method for transporting an ancillary data packet in the active area of a video stream are provided. In particular embodiments of the present invention, the method includes coupling a playback server and a digital video projector with a DVI link; placing an ancillary data packet of link encryption metadata in a false line of video in an active area of a frame of video at the playback server, a remainder of the active area comprising true lines of video; transmitting the ancillary data packet from the playback server to a digital video projector through the DVI link; extracting the ancillary data packet from the frame of video at the digital video projector; and displaying the remainder of the active area of the frame of video at the digital video projector.
    • 根据本发明的教导,提供了一种用于在视频流的有效区域中传送辅助数据分组的系统和方法。 在本发明的特定实施例中,该方法包括:使用DVI链接耦合回放服务器和数字视频投影仪; 将链路加密元数据的辅助数据分组放置在重放服务器上的视频帧的活动区域中的虚拟视频行中,其余的有效区域包括真实的视频行; 通过DVI链路将辅助数据包从播放服务器发送到数字视频投影仪; 从数字视频投影机的视频帧中提取辅助数据包; 并且在数字视频投影仪上显示视频帧的有效区域的剩余部分。