Class of hierarchical store/forward interactive television systems with an approach to the development of their analytical performance models

George J. Rebane

doi:10.1117/12.229196

3 January 1996 Class of hierarchical store/forward interactive television systems with an approach to the development of their analytical performance models

George J. Rebane

Author Affiliations +

Proceedings Volume 2615, Integration Issues in Large Commercial Media Delivery Systems; (1996) https://doi.org/10.1117/12.229196
Event: Photonics East '95, 1995, Philadelphia, PA, United States

Abstract

This paper presents a view of a large scale interactive television system (ITVS) based on an hierarchical architecture of intelligent store/forward nodes. The described ITVS functions within the purview of local knowledge and distributed control which the author argues is the reasonable approach to managing the complexity of such systems. The major data handling themes are outlined and a case is made for the use of segmented burst transmissions. A feature of such an ITVS is the asymmetrical bandwidth requirements for upstream demand (`the back channel') and downstream fulfillment flows. This leads to the identification of an important operational characteristic of such systems which is summarized as the Demand Conservation Principle. The application of this conservation principle is shown to support the development of analytical performance models under an achievable set of assumptions for practical systems. An approach to the development of such models is presented using the ability to collapse large vertical partitions of such systems into a generalized demand cascade. This material is based on Intergraphics Associates TN-94031, an unpublished technical note with the same title, that is one of a series of technical notes on the design, performance analysis, and modeling of interactive television systems.

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George J. Rebane "Class of hierarchical store/forward interactive television systems with an approach to the development of their analytical performance models", Proc. SPIE 2615, Integration Issues in Large Commercial Media Delivery Systems, (3 January 1996); https://doi.org/10.1117/12.229196

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KEYWORDS

Systems modeling

Receivers

Televisions

Performance modeling

Computer architecture

Multimedia

Telecommunications

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