摘要
简要介绍了机顶盒和条件接收系统的工作原理,针对如何在家庭中实现多台电视接收不同节目信号,提出了一种基于STi5518双解码数字电视机顶盒的设计。系统采用TDA8004作为智能卡与TMS320VC5410DSP通信的接口芯片,DSP通过缓冲串口与STi5518交换数据。实现了基于TMS320VC5410DSP芯片的2路数字电视条件接收系统的核心算法。
In this paper, the working principle of set-top box and conditional access system are introduced briefly. In order to realize multiple signals receiving for different televisions in the family, a design of dual-decoder set-top box based on STi5518 is proposed. TDA8004 is used as a communication interface chip between the DSP and smart card. And the DSP buffer serial port is used to exchange data with the STi5518. The core algorithm of two-channel digital TV conditional access system is realized based on TMS320VC5410DSP chip.
出处
《电视技术》
北大核心
2010年第2期40-42,45,共4页
Video Engineering
基金
国家自然科学基金项目(60862001)
