【作者】 陈哲；

【导师】 张永林；

【作者基本信息】 暨南大学 ， 光学， 2005， 硕士

【摘要】 随着网络技术和多媒体技术的迅速发展,视频会议系统的研究和应用已经成为一个世界性的热点。当前,视频会议系统呈现出两个主要的发展趋势:一是由传统基于专用网的视频会议模式向基于Internet的视频会议模式发展;二是由硬件的视频会议解决方案向纯软件的视频会议解决方案发展。另外,IP组播技术的不断成熟,组播应用的范围越来越广泛,开发基于组播的应用也就显得日益重要。国内对于采用Microsoft TAPI3.0构建视频会议系统的研究不多见,并且没有针对于IE浏览器的实现方案。在这种背景下,本论文以Microsoft TAPI3.0作为核心组件,构建了一套基于IE浏览器的纯软件实现的组播视频会议系统。 本论文详细介绍了微软TAPI3.0的体系结构和对象模型、TAPI3.0中的H.323通信和IP组播会议服务体系。还有Windows 2000活动目录、DirectShow、Site Server ILS服务等实现系统所用到的技术。在此基础上,根据项目要求,详细描述了系统功能、系统网络结构和系统部署情况。 文章最重要的部分是详细阐述了如何利用TAPI3.0 API COM组件提供的丰富接口函数,实现了会议管理、组播视频会议和点对点会议三个模块。最后,经过对系统在安全性、通信能力和通信效果三方面的测试,给出了实验结果,并且在“系统对Mbone的依靠性”和“系统展望”方面进行了探讨。 本文提供了一种基于IE浏览器实现中小型视频会议的解决方案,并且按照设计要求进行了系统的开发。鉴于当前多媒体的组播通信方兴未艾,基于IP网的视频会议系统更是研究中的热点,因此开展该方面的实验研究具有较高的研究和应用价值。更多还原

【Abstract】 With the rapid development of the network technology and multimedia technology, study and application of video conferencing system have become one of the world focuses. At present, the video conferencing system demonstrates two main development trends. First, the mode of video conferencing based on private Network is developing into that based on Internet. Second, the solution of video conferencing is developing from hardware towards software. In addition, IP multicast technology is ripe, and the range of application based on multicast is more and more extensive. So it is increasingly importance for the development of the application based on multicast. The study of video conferencing system adopting Microsoft TAPI3.0 is seldom inside. And there is not a solution which aims at IE Browser. Under the background, this paper discusses how to adopt the TAPI3.0 of Microsoft to construct a set of multicast videoconferencing system based on IE Browser.This paper introduces the system construction and TAPI3.0 (Telephony Application Program Interface) Object Model of Microsoft, communication of H.323 and the service system of IP multicast conferencing in detail. And the technologies used for implementing the system are introduced, such as Windows 2000 Active Directory, DirectShow, Site Server ILS Service, etc. On these foundations, according to the project request, it describes the functions of system, network structure and the setting-up of system.The most important part of the article is to explain in detail how to utilize abundant interface functions of TAPI3.0 API COM components. With the help of them, we have realized three important modules, which are conferencing management, multicast conferencing and peer-to-peer conferencing. Finally, we provide the experimental result after finishing the test of the system. The test includes the security of system, communication capabilities and communication results. And "the attribute of depending on Mbone" and "prospect of the system" are discussed.This paper aims to provide a kind of solution to the small or middle videoconferencing system based on IE Browser, and precede the development of the application according to the desired design. Nowadays the multicast communication is in the ascendant and the study of video conferencing system based on IP is hot. So the present research work has both practical and investigative values.更多还原