The Distributed Multimedia Presentation System Based on Extended Timed Petri Nets
نویسندگان
چکیده
urrently, multimedia presentation technologies among the network are most often used in munication services. Examples of those applications include video-on demand, interactive he communication tools on a distance learning system and so on. In this paper, we describe esent different multimedia objects on a web presentation system. The distributed approach is an extended timed Petri net model. Using characterization of extended time Petri net, we e temporal behavior of multimedia objects; on the other hand, we introduce the concepts of action. The main goal of our system is to provide a feasible method to represent a schedule gation of different multimedia objects with user interaction. In addition, users can lly modify and verify different kinds of conditions during the presentation. To verify the l mechanism, we implement an algorithm using the Petri net diagram, analyzing the model chedule of multimedia objects, and produce a synchronous set of multimedia objects with time duration. Another, we also proposed a communication tool that follows a floor control ich provides four types of control (free access, equal control, group discussion, and direct These control mechanisms are sufficient to the use of virtual university environment. ore, we discussed our web presentation based on software metrics. words: Petri Net, Distributed Multimedia Presentation, Distance Learning, Floor Control 88 資管評論 第十期 民國八十九年十二月
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