Modelling Synchronized Hypermedia Presentations

  • Authors:
  • Ombretta Gaggi;Augusto Celentano

  • Affiliations:
  • Dipartimento di Informatica, Università Ca' Foscari di Venezia, Via Torino, Italia 30172;Dipartimento di Informatica, Università Ca' Foscari di Venezia, Via Torino, Italia 30172

  • Venue:
  • Multimedia Tools and Applications
  • Year:
  • 2005

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Abstract

This paper presents a synchronization model for hypermedia presentations. Several media, continuous, like video and audio files, and non-continuous, like text pages and images, are delivered separately in a distributed environment like the World Wide Web, and presented to the user in a coordinated way.The model is based on a set of synchronization relationships which define media behavior during presentation playback, channels in which to play them, and the effects of user interaction. The model is suited for a wide range of applications, among which self and distance education, professional training, Web advertising, cultural heritage promotion and news-on-demand are good representatives. The model is formally described in terms of changes in the presentation state due to media-related events. A virtual exhibition is analyzed as a test bed to validate the model.