Design And Realization Of Support Platform Of Distance Education System

On the basis of distance learning of the communication network technology being with the development of network, especially the development and producing of the multimedia technology, its concept is very extensive, it is varied too to realize the way, but it is most general to use at present, the ripest distance education system is WEB-based distance education system, VOD-based distance education system and real-time interactive distance education system.This thesis has comparatively analyzed the function structure of the distance education system systematically, on the basis of the thing that technology that systematic to the existing distance education system structure are studied, probe into the technological main point of streaming-media technology, network teaching supports the systematic system structure and realizes concretely especially, provide student studying procedure , teacher teaching procedure, examination procedure and teaching procedure while recording. And develop a WEB-based teaching system support platform from this.The result of study of the software structure to the distance education system shows: It is made up of the network course developing instrument, the network teaching support system, the network educational administration administrative system and the teaching resource administrative system, four systems. Teaching support system among them can subdivide into adaptability hypermedia study subsystem, the multimedia teaching subsystem, teachers and students mutual tool, examination and appraise subsystem, answer questions subsystem, study administrative subsystem, homework read over subsystem, WEB- based fictitious laboratory subsystem, etc.In multimedia teaching subsystem, streaming-media technology are adapt to trend at present. Realize streaming are two kinds of methods: Real time streaming and progressive streaming. That is streaming with the order as a stream in real time. Streaming and generally adopt HTTP/TCP protocol to transmit the information of controlling, and transmit the real-time sound data in RTP/UDP protocol.