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Proceedings Paper

Novel dynamic caching for hierarchically distributed video-on-demand systems
Author(s): Kenta Ogo; Chikashi Matsuda; Kazutoshi Nishimura
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Paper Abstract

It is difficult to simultaneously serve the millions of video streams that will be needed in the age of 'Mega-Media' networks by using only one high-performance server. To distribute the service load, caching servers should be location near users. However, in previously proposed caching mechanisms, the grade of service depends on whether the data is already cached at a caching server. To make the caching servers transparent to the users, the ability to randomly access the large volume of data stored in the central server should be supported, and the operational functions of the provided service should not be narrowly restricted. We propose a mechanism for constructing a video-stream-caching server that is transparent to the users and that will always support all special playback functions for all available programs to all the contents with a latency of only 1 or 2 seconds. This mechanism uses Variable-sized-quantum-segment- caching technique derived from an analysis of the historical usage log data generated by a line-on-demand-type service experiment and based on the basic techniques used by a time- slot-based multiple-stream video-on-demand server.

Paper Details

Date Published: 1 February 1998
PDF: 12 pages
Proc. SPIE 3228, Multimedia Networks: Security, Displays, Terminals, and Gateways, (1 February 1998); doi: 10.1117/12.300884
Show Author Affiliations
Kenta Ogo, NTT Human Interface Labs. (Japan)
Chikashi Matsuda, NTT Human Interface Labs. (Japan)
Kazutoshi Nishimura, NTT Human Interface Labs. (Japan)


Published in SPIE Proceedings Vol. 3228:
Multimedia Networks: Security, Displays, Terminals, and Gateways
Louis S. Lome; V. Michael Bove; Barbara Derryberry; Clifford R. Holliday; Louis S. Lome; Vishal Markandey; Andrew G. Tescher; Bhaskaran Vasudev, Editor(s)

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