Research And Implementation Of The Network Video Conference System Based On JAVA

With the rapid development of the information technology, the traditional communication system cannot meet our actual demands. The communication system named network video conference system (NVCS) has progressively become the most important bridge to the modern information society. Meanwhile, NVCS can reduce the strong dependence on traditional special network by utilizing software instead of hardware. It makes a great sense on how to use the software to realize the media data processing and deal with the conferencing process.In this paper, some basic knowledge about NVCS is introduced, such as the development and its tendency, the construction of NVCS and common protocol. Then the main technology of NVCS is analyzed and based on this technology, a new scheme is proposed. In order to run independent platform, Java is adopted. By the tools provided by JMF, such as capture,playback,encoding,decoding and so on, audio and video was taken into the Java application. And then media data process of NVCS is done. Due to the comparison between other network communication technologies exsiting, Multicast is adopted to be used in media data transmission. Due to the asynchronous communication of Java to solve the text transmission.The function of the meeting is implemented preferable.In addition, user-defined signaling and the construction of C/S (Client/Server) are adopted for the scheme. In this scheme, JMF and multicast realizes the capture,process,transmission and acception of the audio and video data and the technology of Java Swing components and provides better support for developing graphic system interface. With a simple structure at low price, this system is considerably useful for the media and small users.