一种适用于多种多媒体广播标准的CA系统

Conditional Access System Applied for Multiple Multimedia Broadcasting Standard

首先论述了传统条件接收系统(CAS)的原理,分析其缺陷,提出一种适用于多种多媒体广播标准的CAS设计方案,改进了传统CA的缺陷,提高安全性和灵活性,并具备了多制式移动机卡分离和移动支付等新特点。

The principle of traditional Conditional Access System （CAS） is firstly introduced, and their defects are discussed. Then, a conditional access system which applied for multiple multimedia broadcasting standard is designed. The design improves the security and flexibility of CAS, and also has features such as multiple standards applied mobile CA separation and mobile payment.