基于伪随机算法的有线电视加解扰系统设计

Design of CATV Scrambling and Descrambling System Based on Pseudo-random Algorithm

提出了利用伪随机线性叠加算法产生多种码组合加扰射频电视信号的设计方案,给出了加解扰机的软硬件设计与实现,通过上位机管理软件设计,完成了对解扰机的控制和管理,解决了目前有线电视加解扰系统成本高,安全性差的问题。目前系统已在国内许多地区得到成功应用,具有实际应用的价值。

The method based on pseudo-random linear superposition algorithm produce a variety of code for scrambling RF of CATV which is presented in this paper. Design and realization of hardware and software of scrambler and descrambler are described in detail, control and management of descrambler are completed through the host computer management system, the problem of high cost and poor security in scrambling system of CATV at present is solved. This system is successfully applied in many regions, and it has good practical value.