| Summary: | 碩士 === 國立高雄師範大學 === 工業科技教育學系 === 93 === In order to embrace the tendency of digitized and web-based multimedia instruction, to provide an intact web-based video on demand (VOD) system, and to enhance teaching efficacy, this thesis was intended to conduct a case study of a web-based multimedia VOD system constructed by the Tainan Industrial Vocational High School, and to elucidate the application and development of this system in education through exploring the new teaching environment created by the cyber instruction system.
In the case study, the web-based multimedia VOD system had been analyzed in depth on aspects of multimedia streaming technology, video and audio compression technology, and system management, in hopes of promoting the application and development of this new teaching technology in school education.
Through analyses of the web-based multimedia VOD system, the utilization and achievement of this system in school education could be summarized into the following points:
1. Teachers could store instruction programs constructed previously into the VOD system via the function of two-way video communication.
2. Teachers or students could select and display a corresponding instruction program in the classroom by using an interactive set-top box connected to a TV set or a projector for the purpose of auxiliary, expanding, and compensatory education.
3. Instructors or learners could play, pause, fast-forward, and rewind an instruction program anytime according to their demands.
4. Digitization of instruction materials displayed by conventional media could effectively reduce the storage space for instruction materials and equipments, enhance the durability of instruction materials, and facilitate the distribution and backup of instruction programs. The tasks for management and maintenance of video and audio equipments were no longer necessary.
5. Teachers could conveniently apply the web-based VOD system to classroom instruction without taking extra equipments with them to the classes. Therefore, teachers’ willingness and preference to use the system more frequently could be enhanced.
6. A web-based multimedia VOD system could be constructed with a VOD server with necessary software and a station installed with a video capture card in the equipment room. In each classroom, the required equipments included a digital set-top box and a TV set or a projector accessing to the system via the existing campus networks.
7. An online roll book system, an online discipline scoring system, an asset management system, and notice and message bulletins could be well
accomplished through the functions of immediate statistics and two-way declaration. This could enhance the time efficiency of school management.
8. In the future, a laptop computer accessing to the web, a video capture card, and a digital video (DV) camera can be used together as a mobile TV station to provide live transmission service for school-wide instruction activities, lectures, and student performances. The activities will be also recorded and stored as video programs in the VOD system.
9. In the future, teachers and students can query online desired information and enrich instruction resource in this VOD system through the displaying of 15" LCD installed in each classroom to increase the diversity and immediacy of instruction materials stored in the system. The LCD monitors can be also tuned in a live channel by default and serve to broadcast non-audio information.
10. In the future, each classroom can be further equipped with a set of webcam transmitting images of learning activities in the classroom to authorized users.
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