The Design And Implementation Of Multimedia Teaching System

In the traditional multimedia classroom, generally by the projector etc to carry outmultimedia teaching. This form of multimedia classroom equipment loss, upgradingmore trouble, and hardware maintenance difficult, and the interactive multimediateaching system has to spend a screen, long delay, speech synchronization problem.Therefore, based on the multimedia teaching system research background, researchstatus and development trend on the basis of research, is a LAN based, interactivemultimedia network system.In the multimedia teaching system research, aiming at the existing multimediateaching system in the presence of flower screen, longer time delay, the voice is not insync with the picture as well as the student computer control when the mousemovements and incoherence problems, and obtained the following results and progress.First, in view of the multimedia teaching system spends a screen and longer timedelay problem, put forward the screen block and data compression and multicastsolutions. According to the characteristics of multimedia teaching system, typically insmaller intervals, the screen changes little, namely screen only a small part of regionalchange, so the screen block, can need to transmit only one or a few screen block can, atthe same time through the data compression and further reduce the network multicastvideo data transmission amount, thereby reducing the multimedia information networktransmission delay.Secondly, in view of the multimedia teaching system in speech is not in sync withthe picture of the problem, put forward the data buffer strategy. By the time stamp anddynamic buffer technology to synchronize multimedia teaching system of voice andvideo information, and aiming at the characteristics of multimedia teaching system,multimedia teaching system of voice information and video information buffer buffersize for research. By the time stamp and buffer technique can effectively solve themultimedia education system of the voice is not in sync with the picture problem.Finally, in view of multimedia teaching system of middle school students’ computer control when the mouse moves incoherence problems. Make use of Sockettechnology to control information transmission, combining the research of split screentechnology to complete the control information transmitting and student terminal screeninformation back to the solution. Through the Socket technology can realize teachersand students between the end terminal computer control information transfer, at thesame time through a split screen technique can reduce the volume of data transmissionin the network, so as to solve the students’ end control when the mouse actionincoherence problems.Through the study of network multimedia teaching system test, show that thedesign of multimedia system effectively solved the flower screen, longer time delay, thevoice is not in sync with the picture as well as the student computer control when themouse movements and incoherence problems, meet the needs of multi media teaching,has certain practical application value; at the same time in this thesis, the screen block,the compressed video data, buffer technology research, has made the study ofmultimedia teaching system has theoretical value.