• Journal of information and communication convergence engineering
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• v.10 no.2
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• pp.205-209
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• 2012

To manufacture a real time digital holographic display system capable of being applied to next-generation television, it is important to rapidly generate a digital hologram. In this paper, we analyze digital hologram rendering based on a computer computation scheme. We analyze previous recursive methods to identify regularity between the depth-map image and the digital hologram.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.57 no.10
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• pp.1883-1887
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• 2008

Most of digital media contents are composed with video and audio, picture and animation informations. Sometime, there is some deviation of information recognition quality for the video and audio information according to information receiver's characteristics or the understanding. But visual information using the text provide most clear and accurate ways for information recognition to human being. In this paper, we propose a new broadcasting system(BSDMC) to transmit clear and accurate meaning of the digital media contents. We implement general-purpose components to display the video, picture, text and symbol simultaneously. Only plug-in and call these components with proper parameters on the application developing tool, we can easily develop the multimedia contents broadcasting system. These components are implemented based on the object-oriented framework and modular structure so that increase the reusability and can be develop other applications quick and reliable.

• Proceedings of the KIEE Conference
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• 1998.11a
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• pp.67-69
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• 1998

The cogging torque in the small BLDC motors used in the DVD driving system or HDD driving system can cause some serious vibration problem. In this paper, some core shapes that reduce cogging torque are found by using reluctance network method(RNM) for magnetic field analysis and genetic algorithm(GA) for optimization. The outer rotor type BLDC motor for the DVD ROM driving system has been optimized as an sample model.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2003.11a
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• pp.261-264
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• 2003

기존치 임베디드 시스템 환경에서 대용량의 멀티미디어 컨텐츠를 검색, 전송 및 재생하는데는 제한된 리소스로 인해 한계전이 있었다. 압축률이 좋고, 전송 및 재생에 효과적인 MPEG-4 시스템의 표준을 따르며. 다양한 대화형 멀티미디어를 프리젠테이션 할 수 있는 기법이 요구된다. 본 논문은 임베디드 시스템에서 DM과 연동하여 비디오/오디오의 재생 제어를 효율적으로 하고, 모듈을 동적으로 로드/언로드하여 저용량의 메모리를 사용하는 MPEG-4 미디어 프리젠테이션 기법을 제안한다.

• Journal of the Korean Magnetics Society
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• v.5 no.5
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• pp.650-654
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• 1995

In digital video recording, higher areal density is strongly required for realizing digital VCRs. In order to accomplish higher areal density. we have implemented a system that has a narrow track pitch and can record data of about 30 Mbps(15 Mbps per channel) with the conventional S-VHS tapes. After computer simulation using the characteristics of the experimental system, we have selected appropriate equalizer and detection method by taking into account performance and cost (including hardware complexity). As a result, the selected equalizer and detection schemes are cosine equalizer and integrated de tection, respectively. The implemented system confirms reliable operation with a symbol error rate of less than $1{\times}10^{-4}$. In this paper, We will show the performance of the implemented system together with simulation results.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2006.11a
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• pp.269-272
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• 2006

홈 엔터테인먼트 서비스는 홈 네트워크 서비스의 하나로서 홈 네트워크를 통해 제공되는 TV, 영화, 게임과 같은 다양한 디지털 콘텐츠를 TV라는 매체를 통해 PC와 같은 TV와는 다른 디바이스에 존재하는 다양한 콘텐츠를 손쉽게 즐길 수 있는 콘텐츠 서비스의 형태라고 할 수 있다. 이러한 다양한 기기에 존재하는 콘텐츠를 손쉽게 이용할 수 있는 허브 장치로서 STB(Set-top Box)가 대두되고 있다. STB가 허브 장치로서의 기능을 하기 위해서는 서로 다른 기기들과의 연계시 발생하는 여러 문제점들(예 : 조작의 불편)을 해결하고 이를 통합 조정할 수 있는 어플리케이션이 필요하다. 본 논문에서는 STB와 멀티미디어 기기 중의 하나인 HTPC(Home Theater PC)를 예를 들어 두 기기간의 연동 환경에서 STB 리모컨을 통해 HTPC를 제어할 수 있는 어플리케이션에 대해 연구한다. 이를 위해 이종 단말기 간의 연동을 위해 RMI(Remote Method Invocation)의 클라이언트/서버 통신 메커니즘을 응용하였다. 이를 통해 HTPC 뿐만이 아닌 다양한 디바이스를 STB에 연결하여 활용할 수 있는 좋은 예가 될 수 있을 것이다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.2B
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• pp.59-68
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• 2008

In order to activate the digital broadcasting in Korea, the analog broadcasting will have been closed down until 2012. Recently IPTV(Internet Protocol TV) thorough internet has been regarded as the fourth media following the terrestrial, satellite, and cable for the digital broad casting. And it has been the important medium for the communication and broadcasting system. However IP is not easy to replace the entire broadcasting system with the digital - type broadcasting system. For the digital broadcasting, we should replace all TV sets, install the settop-boxes to receive the various IP media, solve problems about time delaying when changing channels, and support communication and broadcasting consolidation service for such as PVR and Network CCTV. IPMG is the digital converter that is able to solve these problems. In this paper, I'll develop and analyze IPMG converter's performance which sends and receives both the analogue and digital broadcasting signals through various media gives the Network PVR service.

• 한국정보디스플레이학회:학술대회논문집
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• 2002.08a
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• pp.887-890
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• 2002

In this paper, a new 3D robot vision system using the hierarchical opto-digital algorithm is proposed and implemented. From some experimental results with the 20 frames of the stereo input image pairs, the proposed system is found to be able to effectively extract the area where the target object is located from the stereo input image regardless of the background noises.

• 한국정보디스플레이학회:학술대회논문집
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• 2005.07a
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• pp.41-45
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• 2005

A new algorithm of the image mapping which is a technique of the elemental image generation is proposed. The proposed method is based on the characteristics of the lens array such as the number, the size and the focal length of the elemental lens. The 3D image generated by 3D graphic API such as OpenGL can be directly adopted without the complex adaptation. Since the image mapping using the proposed method can enhance the speed of the elemental image generation, the computer- generated integral imaging system can be applied to virtual reality system.

• Journal of the Korean Society of Clothing and Textiles
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• v.40 no.3
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• pp.506-515
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• 2016

This study examines the digital era's fashion system and defines fashion leaders in the system. The study was based on a theoretical review and a research survey to verify the theoretical findings. The results are follows. The critical changes in the fashion system are expansion, cyclical direction and closer distance between producer and consumer. By inflow of media to a new channel, a layer of consumers was extended and the range of celebrities participating in the fashion industry has expanded dramatically. Simultaneously with the change from vertical communication to cyclical and interactive, the direction of communication was re-routed through diverse media. Crowd sourcing activated through two-way communication service has increased consumer opportunities to participate in production and consumption. Fashion leaders have changed significantly under this new system. The range of celebrities participating in the fashion system has increased and different fashion leaders have appeared. An interactive and cyclical fashion system has been established through media innovation; consequently, the influential power of celebrities and individuals for direct participation in the fashion system directly has increased significantly.