Research Of The System Of Network Video Conference Based On Embeded Linux&Design

The Video conferenceis a kind of modern communication way, and one of the important signs of a country or the regional communication development level, the domestic multimedia industry develops very fast. The market demand of the video-information business was expanded constantly at present, the video-information meeting has been applied to small and medium-sized enterprises and ordinary personal user more and more at present. Video communication has brought the enormous facility to people's production and life, have produced very good economic benefits and social benefit.With the development of the information technology and popularization of the digitized products, Internet gets extensive and profound application, the embedded system is applied to each field, at the same time it becomes a kind of trend that the multimedia of the network is used. In this way, the design and realizing of the network video conference system becomes popular in recent years.The international standard of the existing video conference includes H.320, H.323 agreement, SIP agreement has become a kind of developing direction too. Corresponding audio and video compress technology includes G.723.1 , H.261 , JPEG and MPEG mainly. A H.323 system is made of the terminal station, network floodgate (GK, GateKeeper), gateway (GW , Gate Ways) and control module MCU. With different network,the scheme is different. This text has proposed a scheme of network video conference terminal station based on IP network on the Motorola MC9328MX1ADS board. This terminal station adopts Linux,which is popular embedded operating system at present. Linux...