公开(公告)号：US4547802A

公开(公告)日：1985-10-15

申请号：US490263

申请日：1983-04-29

申请人： John D. Fogarty ,  Gerald M. Borsuk

发明人： John D. Fogarty ,  Gerald M. Borsuk

IPC分类号： H04K1/06 ,  H04N7/08 ,  H04N7/081 ,  H04N7/169 ,  H04N7/16

CPC分类号： H04K1/06 ,  H04N7/1696

摘要： Apparatus for scrambling and descrambling the video portion of TV signals is disclosed. The video portion of the TV signal is stored in a serial memory such as a charge coupled device. Scrambling is accomplished by shifting the end portion of the lines of video to the beginning by recirculating the data stored in the charge coupled devices for a portion of a line of the video signal. Two charge coupled devices are provided so that when the data stored in one device is being recirculated for scrambling the subsequent line can be stored in a second device. Descrambling is an inverse operation and is accomplished in essentially identical hardware.

摘要翻译： 公开了用于对TV信号的视频部分进行加扰和解扰的装置。 TV信号的视频部分存储在诸如电荷耦合器件的串行存储器中。 通过将存储在电荷耦合器件中的数据再循环视频信号线的一部分，从而将视频行的末端部分移动到开头来完成加扰。 提供了两个电荷耦合器件，使得当存储在一个器件中的数据被再循环用于加扰后续的行时，可以存储在第二个器件中。 解扰是一个反向操作，并且在基本上相同的硬件中实现。