• Title/Summary/Keyword: Distance Educatoin

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A Study on Effective Lecture Presentation System in Distributed Multimedia Environments (분산 멀티미디어 환경에서 효율적인 교재 제시 시스템에 관한 연구)

  • Seo, Jung-Hee;Park, Hung-Bog
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.9 no.1
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    • pp.108-116
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    • 2005
  • Synchronizations of intra${\cdot}$intermedia for the lecture presentation in distributed multimedia environments are difficult to guarantee accurate temporal relationship between media, due to the asynchronous errors such as the delay or loss of transferred data or the transmission characteristics of each media. The jitter phenomenon occurs when the network delay has the media arrival rate abnormal because the intra-media synchronization reflects the presentation rate. And the cumulative effective of jitters on a per media stream basis results in a skew. This phenomenon cause confusion to contents recognition of learners due to network delay and can not provide effective interaction of sender and receiver in the distance education. Therefore, this paper can be solution to problems due to network delay by maintaining the requirements of temporal relationship between more than one media. And this paper enables to suggest the inter-media synchronization method that is subject to be influenced by presentation rate, and to implement lecture presentation system for distance education.