Interactive Multimedia Network Education System

With the in-depth educational reform and the development of computer technology, the multimedia network education directs the traditional education. In recent years, a lot of multimedia education software appear in the world, and most have relatively similar characteristics, such as audio, video, whiteboard sharing, teaching broadcasting, the role and right control of a specific user, and so on.Aiming at the interactive feather of multimedia network education, this paper consults some system models, and introduces interactive multimedia network education system's structural models. This paper realizes the functions of multimedia network education system, and realizes the application platform of a interactive multimedia network education system, which defines the upper public services, the lower transmission interface, the message tranfer platform. This system successfully applies to the actual teaching and gets full certification by the utility.This paper has focus on some key technologys in three layers which include network transmission, application and application state control to provide a good technical support for this system. This paper brings forward mixed multicast to revolve the network transmission problem, and enhances the efficiency of the network transmission, reduce network load;This paper brings forward port mapping to cross through the NAT gateway, and resolves the problem that the internal users can't join the specialized interactive applications;This paper brings forward dynamic screen images capture rapid algorithm, and enhances screen images transmission efficiency, make teaching process more fluid;This paper uses DirectShow multimedia development kits to achieve real-time interactive audio and video;This paper brings forward floor control policy to protect the world of multimedia network teaching process orderly and reliability.Compared to the existing multimedia network teaching software, this system can achieve load balance and server more applications;and brings forward mixed multicast to enhance the efficiency of the network transmission;and brings forward dynamic screen images capture rapid algorithm to enhance screen images transmission efficiency.At last, by applying smart phone and wireless technology to multimedia teaching, the flexibility and expansibility of this system is embodied. This paper aims at the feather of development on isomerization unit equipment, and designs the mobile system with the MVCframework. The main achievement is realizing a player and recorder of audio and video in the smart phones based on Symbian OS.