• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 1998년도 Proceedings of International Workshop on Advanced Image Technology
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• pp.51-54
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• 1998

This paper describes the development of the 3DDAC mk.4 system, which is a brand new implementation on the research program. The 3DDAC is a fatigue-less stereoscopic display system that is provided with a compensating function of accommodation for binocular disparity 3D image representation. The mk.4 system also features a light-weight HMD style.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2006년도 한국컴퓨터종합학술대회 논문집 Vol.33 No.1 (B)
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• pp.373-375
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• 2006

본 논문에서는 한국의 전통문양을 이용하여 이미지 코드를 구성하고 문양 내부에 데이터를 저장 할 수 있도록 구조를 설계하였다. 인코딩과 디코딩 알고리즘은 일반 사용자 컴퓨터 환경에 적용 할 수 있도록 제안하였다. 기존의 이미지 기반 코드들과는 다르게 데이터 구조를 유지하면서도 디자인 적인 측면을 살려 이미지 코드에 한국의 문화적인 요소를 표현할 수 있게 되었고 문화 코드로서 역할을 수행하게 되었다. 처음 설계 단계에서부터 전통문양을 이용한 한국의 문화를 표현찬 수 있는 코드의 개발을 목표로 접근하였고 이를 유비쿼터스 시대의 문화코드로 사용함으로서 한국의 전통문화와 멋을 세계에 널리 알리고 감성을 자극하는 코드역할을 할 것으로 기대된다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 하계학술대회 논문집 D
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• pp.2008-2010
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• 2001

최근에 광 디스크 기기의 고배속화에 따라서 디스크의 재생 속도는 점차로 증가하고 있다. 이러한 경향에 따라 트랙킹 제어 루프에서 나타나는 디스크의 편심에 의한 외란의 영향은 더욱 커지게 되므로 기존의 선형 제어기만으로는 디스크의 편심량이 큰 경우에 고배속에서 원하는 트랙 추종 성능을 얻을 수가 없다. 본 논문에서는 이러한 문제점을 해결하기 위해서 반복 학습 제어 알고리즘과 드라이브 시스템의 액츄에이터의 주파수 응답 특성을 이용한 새로운 트랙 추종 제어 방법을 제안한다. 또한, 제안된 트랙 추종 제어 시스템의 제어 성능을 실험을 통하여 검증하여 본다.

• 한국정보과학회논문지:소프트웨어및응용
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• 제31권10호
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• pp.1356-1363
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• 2004

본 논문에서는 미디어 컨텐츠를 직관적으로 조작할 수 있는 새로운 형태의 감각형 미디어 제어 시스템(TMCS: Tangible Media Control System)을 제안한다. 현재 대부분의 사용자들은 키보드와 마우스를 사용하여 디지털 미디어 컨텐츠를 접하고 있으나 이는 사용자가 미디어 컨텐츠를 조작하는 데 있어서 직관적이지 못한 단점을 가진다. 제안된 시스템은 키보드와 마우스를 대신하여 일상 생활의 오브젝트에 RFID 태그와 트래커를 내장시킨 감각형 오브젝트를 이용하여 사용자가 직관적으로 미디어 컨텐츠를 접근하고 제어할 수 있는 감각적인 인터페이스를 제공한다. 그리고 사용자의 기호에 따라 미디어 컨텐츠들을 합성하거나 조작할 수 있는 기능을 제공함으로써 미디어 컨텐츠와 다양한 상호 작용을 지원한다. 또한 사용자 및 상황 정보를 이용하여 사용자의 기호에 따른 개인화 된 미디어 컨텐츠를 제공함으로서 사용자의 욕구를 충족 시켜 줄 수 있는 환경을 제공한다. 더 나아가 이러한 장점을 기반으로 하여 인터렉티브 멀티미디어 재생기 및 제작기, 그리고 멀티미디어 기반의 교육 및 오락 프로그램 등 다양한 분야에 적용할 수 있다.

• ETRI Journal
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• 제38권5호
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• pp.799-806
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• 2016

In this paper, we propose an emergency wake-up alert system (EWAS) for providing accurate and rapid emergency information. The proposed system can provide an emergency wake-up alert service without an additional frequency allotment by utilizing the guard band of the Advanced Television Systems Committee (ATSC) Terrestrial Digital Television (DTV) system. The design target of the proposed system is to match the indoor reception coverage of EWAS with the outdoor reception coverage of the ATSC DTV system. To achieve this, the proposed system should be about 35.65 dB more robust than the ATSC DTV system. The simulation results show that the proposed system offers an emergency wake-up alert service supporting a data rate of up to 23 bps.

• Journal of information and communication convergence engineering
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• 제10권1호
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• pp.71-77
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• 2012

This study examines the factors influencing internet protocol television (IPTV) usage intention. Using Davis's technology acceptance model (TAM) and DeLone and McLean's model of information system success, this study investigates the effects of information system quality (information quality, system quality, and service quality) and media quality on IPTV use in terms of perceived usefulness, perceived ease of use, and usage intention. We examined the proposed model by employing structural equation modeling and survey data from 222 IPTV users. The results indicate that information quality, service quality, and media quality had significant effects on perceived usefulness and that information quality and media quality had significant effects on perceived ease of use. However, system quality had no effect on perceived usefulness or perceived ease of use. In addition, perceived ease of use influenced perceived usefulness, and perceived usefulness and perceived ease of use influenced IPTV usage intention. Further, the stability and reliability of IPTV services encouraged IPTV use, and successful IPTV services showed high media quality.

• 한국환경농학회지
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• 제19권2호
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• pp.122-127
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• 2000

A stream purification system was applied to the upper reaches of the Masan Reservoir to improve the water quality. This system consisted of two channels which were constructed on both sides of the stream, one side packed with crushed gravels and the other with plastic filter media. The system operated under low pollutant concentrations and high hydraulic loadings during a dry season to avoid clogging of the filter media. Removal rate and efficiency of chemical oxygen demand (COD) in the channel packed with crushed gravel were $14.8g/m^3/d$ and 11.5%, and for the channel with plastic filter media, $50.1g/m^3/d$ and 13.5%, respectively. Removal efficiencies of total phosphorus (T-P) were 6.6% (gravel) and 10.0% (plastic media). These results indicated plastic filter media having relatively high specific surface areas were more efficient than crushed gravels in removing pollutants. However, due to low influent water quality during dry season, the removal efficiencies were low. The proportion of nitrate nitrogen to total nitrogen (T-N) of the inflow was high but, as the system operated under aerobic condition, nitrate nitrogen could not denitrified. Accordingly, total nitrogen was not attenuated with this system. To improve the reservoir water quality effectively, this system should be able to treat the storm runoff containing higher pollutant loadings. When the filter materials are clogged by the storm runoff instead of backwashing, it would be more efficient to replace them, Therefore, the use of natural materials which are light, easily obtaining and replaceable, and have high specific surface areas is recommended.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2007년도 한국지능정보시스템학회
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• pp.208-217
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• 2007

The media industry influenced by digital convergence is developing in the direction which the media consumers change their passive attitudes for positive participation on the base of the interactivity of convergence media of telecommunication and broadcasting. And content is progressing toward on-demand service which is customer-oriented and open. In light of these findings, interactivity is the most important feature which is able to shift the paradigm of the media industry and critical success factors which should be considered in order to plan the media strategy. This study is aimed at shedding light on the effects of interactivity factors, which are main factors of ubiquitous environment, on consumer's acceptance intention and describing the role of perceived interactivity and awareness of media substitution in the process of formation of acceptance intention..

• International Journal of Contents
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• 제6권1호
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• pp.35-40
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• 2010

In recent years, China Digital Media Design related undergraduate education has developed into great dimensions while producing a lot of problems. Now cause of rapid development, Disciplinary Location, Training Objectives and Curriculum require study. Firstly, the paper points out the scope and general process of Digital Media Design through an analysis of properties of digital media industry. Secondly, the paper studies the current status of Digital Media Design-related undergraduate education from the policy of Chinese Ministry of Education and the practice of representative universities. Through questionnaire survey of Digital Media Designers from Beijing, Shanghai and Guangzhou, the paper points out the problems of China Digital Media Design related undergraduate education. Finally, paper brings forward the right direction of new system of China Digital Media Design related undergraduate education.

• 한국소음진동공학회논문집
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• 제16권4호
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• pp.366-371
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• 2006

As functional requirements of automatic office machines like printers, Automatic Tellex Machines(ATMs), copying machines are on a trend for the higher speed and precision, extensive technical advances are being developed and implemented in the industry. Media transport system is a device to convey a sheet of paper in ATMs and printers. The stability of media transport system is a matter of concern as their operating throughput rapidly increases. And defects of belts or rollers in a transport system directly affect the level of stability of the system. Therefore an automatic diagnostic system for predicting various defects is necessary for the stable operation of the media transport system. A simulation based on multi-body dynamics has been done for a feasibility study of a system design for the defect anticipation.