摘要
首先介绍了数字电视广播 (DVB)条件接收系统所涉及的技术和标准。DVB多密技术要求机顶盒采用公共接口实现同一机顶盒可接收由不同CA系统加密的节目 ,从用户和运营商角度实现技术的选择和竞争 ,针对DVB条件接收的多密技术 ,给出了一例实际的机顶盒公共接口的设计和实现。
This paper introduces the standards and mechanisms for a single DVB(Digital Video Broadcast)decoder to receive programs scrambled by different conditional access(CA)systems. It especially focuses on the DVB multicrypt solution for CA system. The DVB multicrypt solution allows broadcasters and customers to change CA system without replacing the DVB decoder device, i.e. the set top box. To implement the multicrypt solution, the so-called common interface is used. A design and implementation of DVB common interface within our decoder based on LSI SC2000 is described in this paper.
出处
《中国有线电视》
北大核心
2003年第6期12-16,共5页
China Digital Cable TV
