一种基于多流合一的课件制作系统  

A Courseware Development System Based On Multi-Stream Integrated

作　　者：吴宗明[1] 申瑞民[1] 

机构地区：[1]上海交通大学计算机科学与工程系,上海200030

出　　处：《计算机仿真》2005年第3期243-245,249,共4页Computer Simulation

基　　金：国家自然科学基金(60372078);上海市科委资助项目(多媒体信息提取和融合技术研究及其在教学中的应用)

摘　　要：课件制作系统是远程教育的重要组成部分,但是现有的主流课件---流媒体课件存在着诸如容量过大、功能追加困难等一些不足。针对这些问题该文提出了一种基于多流合一的课件制作系统模型。首先介绍系统的制作、播放、点播服务器、点播客户端等功能模块的功能划分;然后详细介绍了多流合一的实现原理、合一后文件的数据结构;最后提出了在多路流同时回放时,如何保持同步的一种控制机制。系统在本校网络学院的实际使用中,取得了令人满意的结果。The courseware development is an important part of the distance learning system. But the main courseware based on media-stream has some limitations such as too large capacity and difficult of adding function. To solve this problem, the paper introduces a courseware development framework based on Multi-Stream Integrated. Firstly, the system is divided into four functional modules: recording, playback, on-demand server and on-demand client. Secondly, the algorithm of multi-stream integrated and the data structure of the integrated file are described in detail. Finally, the paper gives a control mechanism about how to keep synchronization when multi streams are in playback. The system gives us a satisfactory result when it is applied in the Network Education College of SJTU.

关 键 词：流媒体课件 多流合一 同步机制 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]