Based On The Design And Realization Of Iptv Video Intercom System

With the development of network technology and multimedia technolog,multimedia communications products based IP network are emerging.With videophone products based VOIP technology low price and rich multimedia services are popular for more and more people,and it gradually becomes one of the popular development direction of the communications industry.This article describes a IPTV call termianl,its processor platform are HI3716 IPTV,and it uses Linux for its operating system environment.the terminal supports G.729 audiao formas and H.264 video formatsFirstly,this paper introduces relevant knowledge of VOIP,including the development status and trends of video telephone,and then describes the hardware platform and software platform used in this terminal,the overall architecture of the system software,and builds the embedded software development environment.According to system requirements analysis,system is divided to system control signaling protocol module,an qudio processing module,the video processing module and the media transmission module.The paper elaborated on the idea of the various modules of the system development,realized software design of each module.Using PEG technology to write the application interface,allowing users to control the set-top box terminal during a video call through the operating system interface. Finally,the system accieved a test,the test prove the original design.