DVB-C机顶盒无卡CA系统的设计与实现  

Design and Implementation of CA without Card System in DVB-C STB

作　　者：李洋[1] 林东[1] 

机构地区：[1]福州大学物理与信息工程学院,福建福州350108

出　　处：《电视技术》2013年第18期30-33,共4页Video Engineering

摘　　要：介绍了条件接收系统框架和基本工作原理,对无卡CA和有卡CA进行比较。在此基础上提出了一种无卡CA设计方案及其在数字电视机顶盒中的实现方法,并给出相关流程。机顶盒HI2016主芯片作为主设备,解密芯片PIC16F690作为从设备,实现接收端解密解扰功能,提供了一种DVB-C机顶盒中条件接收模块的解决方案。The framework of the conditional access system and its basic working principle are introduced in this paper, and CA without card is contrased to smart card CA. On this basis, a design of CA without card STB is proposed, and its related flow chart is given. The main chip HI2016 works as the master device, while the decryption chip works as the slave device. The decryption and deserambling functions are achieved, and the solutions of CAS in STB on DVB-C are provided.

关 键 词：条件接收 无卡CA 数字电视 DVB—C机顶盒 

分 类 号：TN949.197[电子电信—信号与信息处理]