DMTS : Distributed Multimedia Teleworking System

• Main Authors: Jeng-Guo Liu, 劉正國
• Other Authors: Maria C. Yuang
• Format: Others
• Language: en_US
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/97619706950900154428

碩士 === 國立交通大學 === 資訊工程研究所 === 82 === Multimedia systems combine a variety of information sources, such as voice, graphics, animation, images, music, and full- motion video, into a wide range of applications. The thesis initially categorizes existing multimedia applications into three classes: Non-Interactive-oriented, Interactive-oriented Client-Server-based, and Interactive-oriented Peer-Party-based applications. In particular, the thesis looks into the second and third class applications and gives an in-deth survey on the media synchronization problem for the design of those applications. This thesis then presents a prototype of a Distributed Multimedia Teleworking System(DMTS), which allows two or more remote systems to collaboratively access and modify multimedia data through network in a fully synchronous fashion. The system is developed over TCP/IP on an FDDI network, using an XVideo D/A card. The media supported in DMTS includes text, graph, voice, and video. For text and graph, to maintain the coherence of the data being simultaneously modified, DMTS employs a master-slave collaboration model between the two remote systems. Moreover, effective mechanisms of reducing skew (asynchrony) and jitter delays between video and voice data streams have also been designed and prototyped in DMTS. Finally, the thesis demonstrates experimental results to indicate that the maximum throughput is 13 frames per second and the throughput bottleneck is on the capture and D/A processing of video frames.