| With the continuous progress of the modernization and informationization construction, the interactive whiteboard is widely used in teaching, training, presentation and meeting. The software system is an extremely important part of the interactive whiteboard system. In this dissertation, on the basis of functional requirements of the high-quality interactive whiteboard system project, the whiteboard software program and main function modules have been designed and key technologies involved have been studied.The dissertation firstly introduces the basic operating principle of the whiteboard and the software system function requirements based on project background. Then select Visual C++2005as development platform and the master-slave structure for system network mode. The software system architecture is designed, including three functional modules:graphic and image system module, recording and playback module and network transimission module.The functional and structural scheme of the graphic and image system module is designed. Then three sub function modules are designed, including drawing, editing and management of graphics and images. The key technologies involved are studied, such as data structure and algorithm design.Based on the graphic and image system module, the recording and playback module is designed and the playback function is improved. The key technologies involved are studied, including data structure design, digital audio collection, thread synchronization.The real-time image transmission and file transmission function of the network transmission module are designed. The key technologies involved are studied, including image data extraction and compression, file compression, communication packet design, transport protocol selection and realization, data verification mechanism.In conclusion, by modules designing and key technologies researching, the interactive electronic whiteboard software has made good effect in the actual process. |
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