| Summary: | 碩士 === 淡江大學 === 資訊工程學系 === 90 === Lecture-on-Demand (LOD) multimedia presentation technologies among the network are most often used in many communication services. Examples of those applications include video-on demand, interactive TV and the communication tools on a distance learning system and so on. In this paper, we describe how to present different multimedia objects on a web-based presentation system. The distributed approach is based on an extended timed Petri net model. Using characterization of extended media streaming technologies, we developed a Web-based Multimedia Presentation System. For a real-world example, suppose a well-known teacher is giving a lecture/presentation to his student. Because of time constraints and other commitments, many students cannot attend the presentation. The main goal of our system is to provide a feasible method to record and represent a lecture/presentation in the air. Using the browser with the windows media services allows those students to view live video of the teacher giving his speech, along with synchronized images of his presentation slides and all the annotations/comments. In our experience, this very approach is sufficient to the use of distance learning environment.
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