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在数字电视系统中,条件接收系统(ConditionalAccesssystems,CA)是核心组成部分,它完成对系统用户的认证、授权和节目加扰工作,因此,CA系统的性能和安全性是整个数字电视系统尤为关键的问题。经过认真论证,并结合运营的实际需要,泰州有线数字电视平台选用了爱迪德和永新同方两个CA系统搭建了同密CA平台(同密技术是指将两个或两个以上的条件接收系统应用于同一网络平台之中的技术)。在此基础上开发了二级CA等新功能并成功投入应用,收到了很好的效果。
In digital television systems, Conditional Access Systems (CA) is a core component that performs authentication, authorization, and program scrambling of system users. Therefore, the performance and security of the CA system are of particular importance to the entire digital television system The problem. After careful demonstration, combined with the actual operation needs, Taizhou cable digital TV platform selected Irdeto and Yongxin Tongfang two CA system to build the same secret CA platform (with dense technology refers to the two or more conditions Receiving system applied to the same network platform technology). On this basis, the development of two new functions such as CA and successfully put into use, received good results.