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Proceedings Paper

Toward enhanced data consistency in distributed virtual environments
Author(s): Sung-Jin Kim; Falko Kuester; K. H. Kim
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Paper Abstract

Distributed virtual environments are rapidly gaining in popularity for the implementation of intuitive and collaborative workspaces. In distributed virtual environments, geographically dispersed user sites possess considerable capabilities for computing and cooperation with other user sites. Primary challenges that have to be addressed by these systems are compensating network latency jitters, keeping system-wide data consistent, enabling fair resource sharing and interaction between the users. This paper reviews a global time-stamp based approach, which is developed by authors to enhance the fairness and consistency across the distributed virtual environments. The approach is described in combination with three different implementation philosophies, a centralized approach similar to client-server model, a decentralized approach similar to peer-to-peer model, and a combined approach consisting of hierarchical layers of centralized and decentralized approaches. Based on a new object-oriented real-time programming methodology called the time-triggered message-triggered object (TMO) programming scheme, two different implementations were tested and compared.

Paper Details

Date Published: 30 May 2003
PDF: 9 pages
Proc. SPIE 5006, Stereoscopic Displays and Virtual Reality Systems X, (30 May 2003); doi: 10.1117/12.477349
Show Author Affiliations
Sung-Jin Kim, Univ. of California/Irvine (United States)
Falko Kuester, Univ. of California/Irvine (United States)
K. H. Kim, Univ. of California/Irvine (United States)


Published in SPIE Proceedings Vol. 5006:
Stereoscopic Displays and Virtual Reality Systems X
Andrew J. Woods; John O. Merritt; Stephen A. Benton; Mark T. Bolas, Editor(s)

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