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Design and implementation of a synchronization scheduler in a distributed multimedia presentation system

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Design and implementation of a synchronization scheduler in a distributed multimedia presentation system

Xu, Shiyan (1999) Design and implementation of a synchronization scheduler in a distributed multimedia presentation system. Masters thesis, Concordia University.

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Abstract

A distributed multimedia document presentation involves retrieval of objects from one or more servers and their presentations at a client system. The retrieval and presentation of media objects have to be carried out in accordance with some temporal specification, i.e. temporal synchronization. In this thesis, we design and implement a synchronization scheduler in a distributed multimedia presentation system. First, we develop an interval constraint graph model to describe the temporal relationships among media objects. Second, based on the model, we give a way to produce an optimal schedule from a set of constraints using a linear programming solver. Third, we develop a run time rescheduling strategy to correct dynamic synchronization errors by means of a retiming method. Finally, we implement the scheduler in a simulated distributed environment to demonstrate its usefulness and effectiveness. The interval constraint graph model we developed takes into account the QoS of temporal constraints of a multimedia document. Our flexible temporal model can help to derive an optimal schedule and carry out run time rescheduling. Then, a multimedia document can be presented with better qualities of temporal constraints, or leading to a better presentation.

Divisions:Concordia University > Faculty of Engineering and Computer Science > Computer Science and Software Engineering
Item Type:Thesis (Masters)
Authors:Xu, Shiyan
Pagination:x, 130 leaves : ill. ; 29 cm.
Institution:Concordia University
Degree Name:Theses (M.Comp.Sc.)
Program:Computer Science and Software Engineering
Date:1999
Thesis Supervisor(s):Li, H. F
ID Code:876
Deposited By:Concordia University Libraries
Deposited On:27 Aug 2009 13:15
Last Modified:08 Dec 2010 10:17
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