• The KIPS Transactions:PartD
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• v.17D no.6
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• pp.453-462
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• 2010

The switch from analog to digital broadcast television is extended rapidly. The DTV can offer multiple programming choices, interactive capabilities and so on. Moreover, with the spread of Internet, the information exchange between the communities is increasing, too. These facts lead to the new TV service environment which can offer customized TV programs to personal/community users. This paper proposes a 'Customized Digital TV System for Individuals/Communities based on Data Stream Mining' which can analyze user's pattern of TV watching behavior. Due to the characteristics of TV program data stream and EPG(electronic program guide), the data stream mining methods are employed in the proposed system. When a user is watching DTV, the proposed system can control the surrounding circumstances as using the user behavior profiles. Furthermore, the channel recommendation system on the smart phone environment is proposed to utilize the profiles widely.

• Journal of Advanced Navigation Technology
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• v.11 no.3
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• pp.319-328
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• 2007

In this paper we implemented the Real Time Contrast Enhancer for image quality enhancement of moving picture. Also we proposed adaptive contrast control method that use mean and variance of input video signal. The Designed the contrast Enhancer is measured in comparison with conventional pictures and interfaced to 30inch TFT LCD TV.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2013.06a
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• pp.313-314
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• 2013

최근 TV 와 같은 디스플레이들은 비접촉식 인터랙션에 의해 제어되는 방법을 많이 사용하고 있다. 이를 위한 다양한 방법들 중에서 풀 비전 기반 인터랙션 방법이 사용자에게 가장 자연스러운 접근을 유도한다. 본 논문에서는 이러한 풀 비전 기반 방법으로 같은 시점의 컬러 영상과 적외선 영상을 이용하여 사용자를 인식하고 손 동작을 이용하여 TV 를 제어하는 어플리케이션을 보인다. 이를 위해 적외선 영상과 거리의 관계를 도출하여 어플리케이션에 적용하고 제스쳐 기반으로 TV 를 제어하였다.

• Proceedings of the KIEE Conference
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• 2005.10b
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• pp.210-212
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• 2005

The personal video recorder is a consumer electronics device that records television shows to a hard disk in digital format. In this paper, we propose an implementation method of personal video recorder for digital TV. The proposed personal video recorder includes cpu and system control modules, graphics and display module, audio DSP module, digital I/O module, NIM module, graphic software library, and embedded software modules for providing a lot of PVR functions such as live or reserved recordings, browsing of recorded content list, trick play and time shifting. Especially, combining trick play with time shifting makes much more convenient functions such as pausing live TV, instant replay of interesting scenes, and skipping advertising.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.05a
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• pp.125-128
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• 2013

The reason why visual fatigue occurs while watching 3D TV is because the left/right images of the fixed disparity are played. This paper proposes a measuring method of pupil distance and the 3D location of a viewer using stereo camera modules, and a reflection method of the data into 3D TV.

• Proceedings of the KAIS Fall Conference
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• 2009.05a
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• pp.649-652
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• 2009

본 논문에서는 LCD TV의 전력 소비를 절감하기 위해 백라이트 유닛을 다분할하여 디밍 제어를 수행하는 알고리즘을 제안한다. 최근 LED 백라이트 유닛을 채용한 대형 LCD TV가 출시됨에 따라서, 백라이트 유닛의 디밍 제어를 통해 LCD TV에서 전체 전력 소비를 절감하고자 하는 기술이 활발히 연구되어 왔다. 기존의 방식은 전체 화면을 MxN개의 분할로 나누어, 각 분할 영역마다 화면의 최대 밝기 정보를 추출하여 디밍 제어를 수행했지만, 본 논문에서는 각 분할영역마다 인접한 영역으로부터 간섭받는 빛의 양을 반영하여, 실제 디밍 제어 값을 다시 계산함으로써, 추가적인 전력 절감 효과를 얻을 수 있는 방식을 제안하고 성능 평가를 하였다.

• Journal of Korea Society of Industrial Information Systems
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• v.18 no.5
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• pp.45-50
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• 2013

Recently, as the market for SMART TV expands, the camera is embedded for providing various user experience. However, this leads to occurrence of camera failure due to TV power up sequence problem, which are usually not detectable in conventional test equipments. Although the failure-detection can be possible by re-generating control signals for audio interface with new equipment, it is expensive and also requires much time to test. In this paper, for SMART TV, FPGA(Field Programmable Gate Array)-based failure-detection system is proposed which can lead to reduction of both cost and time for test.

• Child Health Nursing Research
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• v.19 no.4
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• pp.270-281
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• 2013

Purpose: This study was done to develop a prevention program for media addiction in elementary school students, and to examine its effects on television addiction, internet addiction, cellular phone addiction, and impulsiveness. Methods: The study was designed using a nonequivalent control group pretest-posttest design. The participants were 58 elementary school students (29 in the experimental group and 29 in the control group). Students in the experimental group were given the prevention program for media addiction. The data were analyzed using the SPSS/WIN 19.0 program. Results: Students in the experimental group reported a significant decrease in television addiction compared to students in the control group. Conclusion: The results of the study indicate that the prevention program for media addiction was effective in decreasing television addiction in elementary school students.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2003.10a
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• pp.201-206
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• 2003

Plastic injection mould have two kinds of trouble, one is in mould another in injection parts. Most of defects of the former take the cause in a design like in structure and working, the later weld line, transforming, sink mark, burning, flow mark, scratching, shading, black hole and so on. Most of problems of the later is difficult for making a clear definitely the reason of defects because of complexible. The purpose of this paper is to improve the quality of plastic injection mould and parts with inquiring the counter plan and rouble of the part of Flat TV Front Cover by flow control method and gas- assisted injection moulding. For minimizing defects from injection moulding parts, this paper was investigated with using computer aided injection mold filling simulations. Based on these numerical results, I established guidelines mould design and injection processing condition. As a results I got the improve of quality, minimizing surface defects moulded parts and troubles in mould.

• Journal of IKEEE
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• v.11 no.4
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• pp.307-314
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• 2007

In this paper, we propose an image contrast enhancement algorithm for an LCD TV. The proposed algorithm consists of two processes: the image segmentation process and the tone curve control process. The first process uses an automatic threshold technique to decompose an input image into two regions and then utilizes a hierarchical structure for real-time processing. The second process generates a gray level tone curve for contrast enhancement using a weighted sum of average tone curves for two segmented regions. Experimental result shows that the proposed algorithm outperforms the conventional contrast enhancement methods for an LCD TV.