The Research And Implementation Of Multimedia Communication Software Based

Multimedia transportation has been playing a increasingly important role in our work and life . With the rapid progress of computer hardware technique , it is a trend to software-realize the data processing of multimedia . Generally , there are three kind of method to transport data . Namely , point-to-point, broadcasting and multicasting . Considering the technique limitation of broadcasting and the practical limitation of multicasting , the point-to-point method is adopted in the applications of this paper . This paper involves three software applications , the software in the duplex transmission system of video and audio based on satellite channel , multimedia conference software based on peer-to-peer network topology and multimedia conference software based on client-server network topology . The object-oriented design method is adopted in the first application , which can send and receive video and audio data on satellite channel . The ITU-T recommendation of H.263 is improved and accepted as the video compression standard . G.711 is selected as the audio standard . After the inherent limitation of OOD is analysed , the component object module is introduced and applied to design and develop the second and the third applications ,which have some obvious advantages in the aspects of function extension , code maintenance and structure flexibility .In the last chapter , a neural computing algorithm for bit rate control is designed.