• 감성과학
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• 제18권4호
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• pp.119-128
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• 2015

전자책이 널리 보급됨에 따라 반사형 디스플레이 기반인 단말기의 수요도 증가하고 있다. 본 연구에서는 책을 읽을 수 있는 종이책, E-ink 전자책, LCD 태블릿의 감성과 독서 상태를 비교했다. E-ink 전자책에 대한 소비자의 감성반응을 알아보기 위해 감성평가 후 독서 장치의 종류에 따른 가독성, 선호도 실험을 수행하였다. 실험은 화면으로만 판단할 수 있도록 마스크를 제작했으며 컨텐츠의 내용만 다르게 설정하고 모든 조건과 환경을 동일하게 하였다. 감성반응 파악을 위한 감성어휘 실험에서는 의미분별법을 활용한 결과 LCD보다 E-ink 전자책을 종이와 가깝게 느끼는 것으로 나타났다. 가독성에 대한 선호도를 알아보기 위한 실험에서는 자기보고식 설문을 한 결과 LCD보다는 E-ink 전자책을 선호하였으며 E-ink 전자책보다는 종이를 선호하거나 비슷하게 선호하는 것으로 나타났다. 사용자들이 E-ink 전자책을 종이와 비슷한 감성을 갖고 있으므로 E-ink 전자책이 종이책을 대체할 수 있을 것으로 기대한다.

• 한국전자통신학회논문지
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• 제7권5호
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• pp.1011-1016
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• 2012

최근 이동통신의 발전으로 스마트폰 및 테블릿 PC 같은 이동 단말기들이 활발하게 보급되고 있다. 이러한 모바일 기기를 이용하여 다양한 증강현실이 구현되고 있다. 본 논문에서는 모바일 증강현실을 이용한 3D 선박 디스플레이 시스템을 설계하고, 도면 매칭 알고리즘을 구현하였다. 본 시스템을 이용하여 선박수주 활성화에 도움을 주고자 한다.

• Journal of Multimedia Information System
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• 제1권2호
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• pp.95-100
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• 2014

Variable message signs (VMS) have the different sizes and a specific type according to the city scene and it has to be displayed by different message on the display panel in real-time. And VMS manufacturers must produce the different products in order to give a customized product to each order. In addition that, they should test and check the correct operation to each VMS product using the different message frame. That is very time and workers consuming and VMS emulator with an automatic variable message generator system is necessary. Also, the automatic message generator system is needed to real-time scheduling in order to display the message on the VMS panel like real world. In this paper, we design and implement the VMS emulator embedded the automatic message frame generator system with real-time scheduling which can set several parameters easily on the windows dialog.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 신호처리소사이어티 추계학술대회 논문집
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• pp.15-18
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• 2003

This paper proposes a color matching 3D look-up table simplifying the complex color matching procedure between a monitor and a mobile display device. In order to perform color matching, it is necessary to process color of image in the device independent color space like CIEXYZ or CIELAB. We improved the S-curve model to have smaller characterization error than tolerance error. Also, as a result of the experiments, we concluded that the color matching look-up table with 64(4$\times$4$\times$4) is the smallest size allowing characterization error to be acceptable.

• Journal of Advanced Marine Engineering and Technology
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• 제33권4호
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• pp.569-577
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• 2009

Mobile information retrieval is an evolving branch of information retrieval that is centered on mobile and ubiquitous environments. In general, mobile devices are characterized by lightweight, low power, small memory, small display, limited input/output, low bandwidth, and so on. Some of these characteristics make it impossible to apply general information retrieval to mobile environments without any modification. In order to relieve this problem, we design and implement an information retrieval system for mobile devices like wireless phones, PDA and handheld devices. We use document summarization techniques to alleviate the limitation of small display and user profiles to retrieve the most proper documents for each individual user for personalized search. Futhermore we use meta-search to lighten some burdens visiting several portal sites. In this paper, we have implemented and demonstrated the proposed mobile information retrieval system on the domain of travel and received good evaluation from users subjectively.

• 제어로봇시스템학회논문지
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• 제8권10호
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• pp.874-880
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• 2002

A number of techniques have been proposed for 3D display using view-difference of two eyes. These methods do not express enough reality like real world. The display images have to change according to the position of a viewer to improve reality. In this paper, we present an approach for generating intermediate image between two different view images by applying new image interpolation algorithm The interpolation algorithm is designed to cope with complex shapes. The proposed image interpolation algorithm generates rotated image about vertical axes by any angle from base images. Each base image that was obtained from CCD camera has an view-angle difference of $3^{\circ}C$, $5.5^{\circ}C$, $^{\circ}C$, $22^{\circ}C$, and $45^{\circ}C$. The proposed into mediate image generation method uses the geometric analysis of image and depth information through the block-based matching method.

• 한국컴퓨터산업학회논문지
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• 제10권3호
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• pp.93-98
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• 2009

본 논문에서는 단순한 형태의 그림이나 이미지, 도형의 변화만을 동적으로 표현하는 스크린 세이버가 아닌 웹과 스크린세이버를 접목시킴으로서 컴퓨터를 사용하지 않는 시간에 스크린세이버로 간단한 정보들을 제공해줌으로서 작업을 진행하지 않는 시간을 조금이라도 활용 할 수 있도록 유도하는 스크린세이버 프로그램을 개발하였다. 본 논문에서 제안하는 스크린 세이버는 사용자가 미리 정의한 뉴스 기사나 날씨, 동영상등의 정보를 화면에 출력하여 줌으로써 사용자의 필요에 따른 유용한 정보를 제공하여 줄 수 있으며 스크린 세이버의 기본 개념을 최대한 유지할 수 있도록 하였다.

• 반도체디스플레이기술학회지
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• 제11권1호
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• pp.49-54
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• 2012

There have been plenty of difficulties because properties of Alq3 are unable to acquire in a process of manufacture of OLED. In this paper it will predict a viscosity of Alq3 through DSMC technique and suggest the way regarding a study to estimate properties of material through the computer simulation. There could generate errors of a simulation process in a vacuum deposition process since the properties of material that is used in a high-degree vacuum environment are not secured. Therefore, we would like to propose the new methods that can not only predict properties of a molecular unit but also raise an accuracy of simulation process by forecasting properties of Alq3.

• 반도체디스플레이기술학회지
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• 제15권3호
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• pp.40-45
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• 2016

In this paper, the fire engine pump is controlled and monitored by the AJAX (Asynchronous Javascript and Xml) in the web server. The embedded system with built-in system having a processor and a memory of high performance occurs many problems in transmitting the large amount of data in real time through the web server. The AJAX is different from HTML (Hyper Text Makeup Language) with java script technology and can make RIA (Rich Internet Application). It process the necessary data by using asynchronous and it take advantage of usefulness, accessibility, a fast response time. Using AJAX can build up web server with real time and monitoring that fire engine pump status, check processing pump memory in the event of fire, also remotely monitors can do. The web server system can control the fire engine pump as like the black box. The experimental results show the effectiveness and commercialize possibility.

• 반도체디스플레이기술학회지
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• 제13권4호
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• pp.43-48
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• 2014

Two-level inverter has some disadvantages like high harmonics contained in the output current, efficiency limit and stress to switching device as IGBT and FET. Many researches have reported multi-level inverter to complement two-level inverter of problems. In this paper, we suggest MPPT algorithm of multi-string three-level solar inverter that considered nowadays. We added midpoint controller in order to implement the MPPT algorithm because the three-level inverter has to need midpoint controller and procured the stability of direct current link. We verify the superiority of multi-string T-Type inverter and the algorithm we suggested with solar irradiance variation experiment and MPPT efficiency measurement. The MPPT efficiency was confirmed with a high efficiency more than 99.97%.