Interactive Electronic Whiteboard System Designed Base On Java

With the rapid development of Computer Network Technology, electronic whiteboard system is being used more and more widely, but the traditional electronic whiteboard system has been unable to meet the requirements of users for different places. Interactive electronic whiteboard system has been used widely in the fields of education, commerce and so on because of its better network interactivity. And a number of domestic and foreign manufacturers also have launched a variety of interactive electronic whiteboard systems.Today, the hardware of interactive electronic whiteboard is developing rapidly, however, the development of accessory software is pretty slow, software systems on the market just have a single function, which are completely unable to meet the user’s demands. The software system of the interactive whiteboard is not only to match with the hardware, but also to meet the needs of users. So the software system is very important in the interactive whiteboard system. Thus, in this paper, the software part for interactive electronic whiteboard system was studied and an interactive electronic white board system based on Java was designed.In this paper, the current research status and development trend of the interactive electronic whiteboard were analyzed. Combined with the advantages of Java language, it was used as the development language of the system.Considering the network model, C/S- master slave mode was applied in the interactive electronic whiteboard system to satisfy the user’s interactive performance.Firstly, the overall system design was done. Then the three main function modules of the system:the graphic image system module, recording and playback module and the network transmission module were designed in detail. The graphic and image system module is the core of this paper, which was divided into drawing function module, graphics and image editing function module and graphics and image management function module. In the drawing function module, the double buffering technology was used to eliminate the frequent flicker of the screen. In the editing module, the matrix of the graphic image and the erase operation were introduced. In the management module, arrays and linked lists were used to store the index information of the graphics image. The above three function modules completed a complete set of graphics and image rendering and management system. In the recording, and playback function module, the functions of recording and management and playback of multimedia files could be realized. The network transmission module supported the interactive of electronic whiteboard system. At the same time, an adaptive Hoffman algorithm was discussed, which could improve the efficiency of data compression and help for transferring file. Finally, the interactive electronic whiteboard system was tested. The results showed that the interactive whiteboard system designed in this paper could achieve the expected design requirement.