by Lek Heng Ngoh, Huanxu Pan, Venugopal Reddy
http://www.krdl.org.sg/People/lhn/papers/mmm95.ps.gz
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Abstract:
In this paper, the various research and design issues of a storage server in the context of a multimedia-ondemand (MOD) system are explored. Using the research prototype currently being developed by the authors as an example, we first examine the data throughputs of various disk systems which can be used to form the basis of the storage server. Next we present a producer-consumer based dynamic disk scheduling scheme to retrieve multiple data streams simultaneously and deposit the data in the buffer memory of the MOD server for delivery to the respective clients. We show experimentally that the dynamic nature of the algorithm is more efficient and robust than the static disk scheduling algorithms which have been proposed elsewhere. We further demonstrate how by using the concepts of "multimedia capacity region " (MCR) the QoS-guaranteed service "capacity " of the storage server can be determined for admission control purposes. Finally the overall design of a typical MOD storage server and the various multimedia information browsing techniques are discussed. The potential usages of a Multimedia-On-Demand system (MOD) are boundless. For examples, besides providing the much-talked-about movies-on-demand and music-ondemand
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