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김성기;홍건호;송하윤;한상영
- Proceedings of the Korean Information Science Society Conference
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- 2003.04d
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- pp.518-520
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- 2003
데이터 방송을 셋톱 박스에서 시청하기 위해서 여러 가지 표준적인 플랫폼들이 존재하는데, 각 플랫폼마다 컨텐츠 표현 언어가 존재한다. 이러한 각 컨텐츠 표현 언어를 처리해주기 위해서는 데이터 방송 용 브라우저가 필수적인데, 본 논문에서는 DVB-MHP 플랫폼에서 DVB-HTML 어플리케이션의 처리가 가능한 내장형 브라우저를 설계하고 구현하였다.
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Lee, Si-Hwa;Hwang, Dae-Hoon
- Journal of Korea Multimedia Society
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- v.12 no.2
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- pp.219-230
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- 2009
With the development of broadcasting technology from analogue to interactive digital, the number of TV channels and TV contents provided to audiences is increasing in a rapid speed. In this multi-channel world, it is difficult to adapt to the increase of the TV channel numbers and their contents merely using remote controller to search channels. For these reasons, the EPG system, one of the essential services providing convenience to audiences, is proposed in this paper. Collaborative filtering method with multi-step filtering is used in EPG to recommend contents according to the preference of audience groups with similar preference. To implement our designed TV contents recommendation EPG, we prefer DiTV and use JavaXlet programming based on MHP. The European DVB-MHP specification will be also our domestic standard in DiTV. Finally, the result is verified by OpenMHP emulator.
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Lee, Si-Hwa;Hwang, Dae-Hoon
- Journal of Korea Multimedia Society
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- v.10 no.1
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- pp.128-138
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- 2007
With the development of broadcasting technology from analogue to interactive digital, the number of TV channels and contents provided to audience is increasing in a rapid speed. In this multi-media and multi-channel world, it is difficult to adapt to the increase of TV channel numbers and their contents merely using remote controller to search channels. Due to this reason, EPG (Electronic Program Guide) has been one of the essential services providing convenience to audience. So EPG complying with European DVB-MHP specifications, which will be also our domestic standard, is proposed in this paper. In order to provide audiences with DiTV contents they preferred, we apply collaborative filtering algorithm to recommend contents according to preference value of audience group with similar preference. And we use JavaXlet application which is based on MHP to implement this EPG, while the result can be verified by OpenMHP emulator.
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정문열;백두원
- Journal of Broadcast Engineering
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- v.9 no.1
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- pp.74-82
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- 2004
In digital broadcasting, applications are computer programs executed by the set-top box(TV receiver) , and synchronized applications are those that perform tasks at the specified moments in the underlying video. This paper describes important concepts, standards, and skills needed to implement synchronized applications and explains how to integrate them to implement these applications. This Paper assumes the European data broadcasting standard, DVB-MHP. In DVB-MHP, scheduled stream events are recommended as a means of synchronizing applications with video streams. In this method, the application receives each stream event, and executes the action associated with the stream event at the time specified in the stream event. Commercially available stream generators, i.e., multiplexers, do not generate transport streams that support scheduled stream events. So we used a stream generator implemented in our lab. We implemented a synchronized application where the actions triggered by stream events are to display graphic images. We found that our synchronized application processes scheduled stream events successfully. In our experimentation, the stream events were synchronized with the video and the deviation from the intended time was within 240 ㎳, which is a tolerance for synchronization skew between graphic images and video.
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