流媒体技术的研究及在网络教学中的应用

发布时间：2018-06-18 00:23

本文选题：流媒体 + 网络教学　；参考：《河北科技大学》2010年硕士论文

【摘要】：流媒体采用“边下载、边输出”的流方式传输,这不仅使启动延时大幅的缩短,而且对系统缓存的需求也大大降低,另外它还可以进行同步、标识、控制等。正由于流媒体技术具有这些优点,所以流媒体技术自真正诞生至今天不过短短几年时间就被广泛应用于互联网多媒体新闻发布、在线直播、网络广告、电子商务、视频点播、远程医疗、网络电台、远程教育、实时视频会议等互联网信息服务的方方面面。流媒体的应用系统、国际标准和基础研究正成为目前产业界和科研机构密切关注的焦点。通过设计一套流媒体应用系统,从理论和实践两个方面对流媒体技术进行研究具有重要的意义。本文在对流媒体技术的基本原理及其在多媒体网络教学中的应用方式、流式教学系统的组成特点和发展现状等几个方面进行阐述的基础上,根据教学构件划分的思想,设计出一个能够在现有低成本条件下使用的流式教学系统。该系统使用纯软件实现方式,以Windows Media流媒体技术为支撑,依据教学构件划分的思想对流式教学系统中的各个子系统进行了合理划分,并分析了将流媒体应用到该系统时,需要解决的几类技术问题,由各个教学子系统向用户提供服务。利用现有的校园网设施,使用纯软件的方式,为师生提供教学服务。在阐述系统软硬件结构、工作流程和功能模块划分、数据库表设计的基础上,重点介绍了在.NET平台下,教学管理子系统和教程点播子系统的实现过程。
[Abstract]:Streaming media uses the streaming mode of "download while output", which not only shortens the startup delay, but also reduces the requirement of system cache. In addition, it can also be synchronized, identified, controlled and so on. Because streaming media technology has these advantages, streaming media technology has been widely used in Internet multimedia news release, online live broadcast, online advertising, e-commerce, video-on-demand in a few short years. Telemedicine, network radio, distance education, real-time video conferencing and other aspects of Internet information services. The application system of streaming media, international standards and basic research are becoming the focus of attention of industry and scientific research institutions. By designing a streaming media application system, it is of great significance to study streaming media technology from two aspects: theory and practice. On the basis of expounding the basic principle of streaming media technology and its application in multimedia network teaching, the composing characteristics and development status of streaming teaching system, this paper introduces the idea of teaching component partition. Design a flow teaching system which can be used in the current low cost condition. This system uses the pure software realization way, takes the Windows Media streaming media technology as the support, according to the teaching component division thought, has carried on the reasonable division each subsystem in the flow teaching system, and has analyzed the streaming media application to this system. Several kinds of technical problems that need to be solved are served by each teaching subsystem. Using the existing campus network facilities, using pure software to provide teaching services for teachers and students. On the basis of describing the software and hardware structure of the system, the work flow and the partition of function modules, and the design of database table, the realization process of the teaching management subsystem and the tutorials on demand subsystem under the. Net platform is introduced emphatically.
【学位授予单位】：河北科技大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：TN919.8;TP391.6

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