基于Irdeto的两级CA系统

The Two-stage CAS Base on Irdeto

简要介绍设置省市两级CA需要考虑的问题和相应的解决方法,并且结合本地省市两地的Irde-to CAS,验证两级CA方案。

This article introduces how to transmit the scrambled programs to Set-TOP-Box（STB） through twostage CAS without deseramble on Head-end. Base on the Irdeto CAS of GDCATV and ZHCATV, we make a test.