Chin-Yu Chen

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Chin-Yu Davis Chen originally gained interest in his project after attending a lecture on Advanced Computer Networks.  He values the uniqueness of this project as well as the quality of innovation demanded of him.  This project, which focuses on the control and concealment of error in video signals, has also been published in the Third Annual Multimedia Technology and Applications Conference (MTAC).  Davis suggests that finding a professor whom one likes is the key to a successful research project. triangle.gif (504 bytes)




Video On Demand (VOD) is one of the most promising future multimedia services that allow users to view video programs at a desired time.  VOD may be realized using emerging high-speed network infrastructures based on Asynchronous Transfer Mode (ATM) technology. However, due to the novelty of ATM, there is a lack of experience on transport of multimedia traffic. In this paper, ATM performance in transporting compressed video (MPEG) is evaluated through experiment and simulation.  A prototype VOD application is developed to investigate design issues such as rate control and error control.  Network errors causing data corruption may degrade the quality of the video severely.  This paper undertakes a comparison of the two error control schemes, Reed-Solomon Forward Error Correction (RS FEC) and Header Error Concealment (HEC).  The metric for the quality measure of the video is the comparison of the signal-to-noise ratio (SNR) of the resulting video to the original video.triangle.gif (504 bytes)

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Faculty Mentor                                                                                                                
Tatsuya Suda.GIF (25462 bytes)

Tatsuya Suda

Department of Information
and Computer Science

Working with Chin-Yu has been a very rewarding experience for me.  Chin-Yu attacked an important research topic of how to provide effective error control for video on demand (VOD) services on an ATM (Asynchronous Transfer Mode) high speed network.  In VOD services, it is critical to provide effective error control so that video streams are transmitted to a number of users on a real time basis.  Chin-Yu empirically evaluated various error control schemes. The research findings of the project will deepen our knowledge on multimedia high speed networks.triangle.gif (504 bytes)

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Chin-Yu Chen - Error Control For Video On Demand ... [1] [2] [3] [4] [5] [6]

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