基于rtp的远程教育同步超媒体直播讲座系统

Herng-Yow Chen, Y. Chia, Gin-Yi Chen, Jen-Shin Hong
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引用次数: 8

摘要

在本文中,我们介绍了一个“实时同步超媒体实时讲座(SHLL)系统”,该系统使用RTP同步流媒体视频讲座的实时呈现、基于HTML的课堂笔记和HTML页面导航事件。SHLL框架包括三个主要模块:(1)SHLL记录器——用于记录AV讲座的时间信息和基于html的课堂笔记导航过程。(2) SHLL事件服务器——用于接收、存储和播报SHLL事件。(3) SHLL浏览器-用于同步AV讲座的呈现和基于html的讲义导航。为了管理不同媒体的同步呈现,我们提出了一种考虑人的感知因素的基于rtp的多同步同步模型。为了评估所提出的SHLL框架和同步模型的性能,使用Java/JavaScript和c语言实现了一个基于realsystem的同步HTML-AV远程演讲系统原型。原型系统验证了所提出的框架用于同步超媒体直播的可行性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An RTP-based synchronized hypermedia live lecture system for distance education
In this article, we have introduced a “Live Synchronized Hypermedia Live Lecture (SHLL) System” using RTP to synchronize the live presentation of streaming video lecture, HTML-based lecture notes, and HTML page Navigation Events. The SHLL framework consists of three major modules: (1) SHLL Recorder- for recording the temporal information of the AV lecture and the HTML-based lecture notes navigation processes. (2) SHLL Event Server- for receiving, depositing, and multicasting SHLL events. (3) SHLL Browser- for presentation of the synchronized AV lecture and HTML-based lecture notes navigation. To manage the synchronization presentation of different media, we have proposed an RTP-based Multi-Sync synchronization model, which account for the human perception factors. To evaluate the performance of the proposed SHLL framework and synchronization model, a RealSystem-based prototype Synchronized HTML-AV Distance Lecture System has been implemented using Java/JavaScript and C. The prototype system certifies the feasibility of the proposed framework for synchronized hypermedia live multicasting.
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