• Journal of the Korea Society of Computer and Information
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• v.16 no.2
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• pp.71-81
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• 2011

In order to easily create video tutorials, the algorithm is needed that video camera recording, white board images, video attachments, and document data are combined in real-time. In this study, we implemented the video lecture content creation system using wavelet-based lossless compression to composite multimedia objects in real-time and reproduce the images. Using commercially available PC can be useful when lecturers want to make video institutional contents, it can be operated easily and fastly. Therefore, it can be very efficient system for e-Learning and m-Learning. In addition, the proposed system including multimedia synthesis technology and real-time lossless compression technology can be applied to various fields, different kinds of multimedia creation, remote conferencing, and e-commerce so there are highly significant.

• Journal of the Korea Society of Computer and Information
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• v.11 no.1 s.39
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• pp.55-61
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• 2006

Multimedia title needs player that depends upon operate system. This raises problems of data compatibility and resource consumption by overlapping development of player. To solve problems, we propose a method which produce multimedia title contents to internet document and then display on internet browser. Contents in multimedia title are transcoded to internet pages, having greate quality, based on CSS Layer for spatial synchronization of multimedia data. This method converts existing DB into XML for multimedia title including personal information. Therefore, XML data and resource information is playable by private multimedia player. Consequently, user can display multimedia content without player using internet browser in anytime.

• The Journal of the Korea Contents Association
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• v.11 no.1
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• pp.302-316
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• 2011

Despite steady economic growth of e-learning industry, manpower is lacking in e-learning industry. In this study, We developed a new e-learning business model including open market portal system to solve this problem. The existing e-learning business models required complicated procedure for creating contents. Therefore it took long time and great expense. But in this study we developed the business model with open market portal system, it can support to make easily for e-learning contents. We analysed usefulness our program and other popular programs with thirty lecturers. As a result of survey, usefulness of our system is presented. The study suggests differently the student-centered business model and the lecturer-centered business model than existing e-learning business model had the manufacturing company-centered business model and the services-centered business model. We anticipate the new business model invigorate the e-learning industry.

• Journal of the Korea Society of Computer and Information
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• v.11 no.1 s.39
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• pp.251-258
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• 2006

When producing a wireless web contents by using wire web contents for PC environment, we should consider how to represent lots of information being suitable with PC environment to wireless devices having narrow performance. Therefore, we propose mobile page editor for manager to select and modify specific contents with the existing wire web page. Also, we try to define an intermediate language based on DID(Digital Item Declaration) of MPEG-21 multimedia framework which defines source of converting information and wireless web contents generating at mobile editor in considering real time service problem when transcoding multimedia information in a web server into wireless device having low resolution, narrow performance of media process, memory, and so on.