• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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• pp.773-775
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• 2004

For high end, large area displays, all current LC modes require some degree of optical compensation to improve the front of screen viewing experience. Currently most optical films are laminated to the outside of the LCD cell, between the glass and polariser. In this paper we wish to show how it is possible to integrate the compensating optical film within a VA mode LCD cell. The paper will describe the process of making the biaxial film through the process of in-situ photopolymerisation of an aligned film of reactive mesogens in the cholesteric phase using polarised UV light. The film can be made on the colour filter array side of the LCD panel. In addition the process of fabricating a VA mode LCD containing this film will be described and the performance of this module will be presented

• 한국재료학회지
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• 제14권9호
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• pp.670-675
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• 2004

Glasses in the $Bi_{2}O_3-SiO_2-ZnO$ glasses system were examined as a potential replacement for lead-oxide glass frits with low firing temperature ($500\sim600^{\circ}C$) for the dielectric layer of a plasma display panel (PDP). The glasses were evaluated for glass transition temperature($T_{g}$) and thermal expansion coefficient(${\alpha}$). After forming transparent thick films by a screen-printing method, it was evaluated for the optical properties. The transmittance of thick films fired at $500-600^{\circ}C$ showed above $80\%$, which was not dependent on the firing temperature. As a result, many pores were observed at samples fired at low temperature, while the number of pores from samples prepared at high temperature decreased and the pores size increased.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 1994년도 춘계공동학술대회논문집; 창원대학교; 08월 09일 Apr. 1994
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• pp.375-384
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• 1994

Depending upon the eye and head movement, the visual field is often classified into three categories; stationary field, eye field and head field. To investigate the effect of background condition on the size of stationary field, an experiment was conducted, in which the subject was instructed to search a target with distinct orientations. In each trial, a single target was presented on the rear-view screen projected by the two-field tachistoscope, with the visual angle subtended 4.3.deg. vertically and horizontally. Density, meridian and subject showed a significant effect on stationary field at .alpha.=0.01, where density was inversely proportional to the size of stationary field. The size of the stationary field on horizontal axis was larger than that on vertical axis, and that on right and below meridian also larger than on left and lower meridian. The shape was found to be horizontally oriented oval and statistically asymmetric with respect to horizontal and vertical axes. The regression equation to predict stationary field on the given background condition was suggested. These results were expected to be used as a designing guideline when arranging displays and controls on panels such as automobile display panels, cockpits, etc. In addition, it can be inferred from the results that eye field and head field are also subjected to the influence of background condition.

• Journal of Biosystems Engineering
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• 제33권3호
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• pp.196-203
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• 2008

Hybrid robust image processing algorithm to extract visual features of melon during the cultivation was developed based on a wireless tele-operative interface. Features of a melon such as size and shape including position were crucial to successful task automation and future development of cultivation data base. An algorithm was developed based on the concept of hybrid decision-making which shares a task between the computer and the operator utilizing man-computer interactive interface. A hybrid decision-making system was composed of three modules such as wireless image transmission, task specification and identification, and man-computer interface modules. Computing burden and the instability of the image processing results caused by the variation of illumination and the complexity of the environment caused by the irregular stem and shapes of leaves and shades were overcome using the proposed algorithm. With utilizing operator's teaching via LCD touch screen of the display monitor, the complexity and instability of the melon identification process has been avoided. Hough transform was modified for the image obtained from the locally specified window to extract the geometric shape and position of the melon. It took less than 200 milliseconds processing time.

• 대한의용생체공학회:의공학회지
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• 제29권2호
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• pp.164-171
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• 2008

Recently, many of hospitals have hurried to computerize the resulting data from medical devices, in order to introduce Electric Medical Record(EMR). In terms of the linkage between medical devices and hospital information systems, however, many difficulties have arisen due to some reasons such as the variety of prescription input, the format difference of the resulting data sheet, and the interface difference between medical devices from different companies. To solve these problems, many researches on standardization of the resulting data of medical devices have been performed. In this study, the linkage between hospital information systems and resulting datum in Electrocardiogram(ECG) generating biosignal waveform was tested by applying Medical waveform Format Encoding Rules(MFER) Version 1.02, which has more advantages than existing global standard. MFER viewer, in addition, was made to display the resulting data on a screen. The MFER viewer was tested and compared to the existing Scalable Vector Graphics (SVG) Viewer. The results showed that this method is more effective in the interface the data storage and application, because of simplicity and easiness in data applications. And the results show that the MFER is convenience and effective for physician. It is considered that the role of MFER as the interface in biosignal waveform including Electrocardiogram medical devices would expand in the near future.

• 한국콘텐츠학회논문지
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• 제1권1호
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• pp.59-67
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• 2001

컴퓨터를 비롯한 통신의 영역과 가전제품의 영역이 교차되면서 새로운 차원의 정보가전제품들이 등장하고 있으며 이들 제품들에게 있어 사용자 인터페이스는 매우 중요한 요소라 할 수 있다. 특히 영상기기류에 장착되는 OSD와 리모컨은 사용자 인터페이스의 핵심적인 요소로서 본체의 매력적인 스타일링 못지않게 심도깊은 연구가 필요한 부분이다. 그럼에도 불구하고 OSD 디자인에 대한 담당자나 영역이 불명확하여 회로기술자들이 단순기능의 이전모델부터 해온 경험과 단순한 직관을 바탕으로 사용자의 시각이 아닌 엔지니어의 시각에서 설계하여 왔다. 이에 본 연구에서는 기업에서의 개발사례를 바탕으로 인터페이스 디자이너에 의한 사용자 중심의 OSD 개발 프로세스를 규명하고 OSD의 특수성 즉 OSD가 제한된 용량의 마이컴과 메모리에 저장되어 제품에 내장되고 디스플레이되는 매체도 해상도에 제약이 있는 TV화면으로 하드웨어적인 사양에 많은 영향을 받으며, 입력장치가 리모컨으로 제한된 수의 입력버튼을 가지고 모든 조작이 가능해야 한다는 점 등 을 고려한 실행단계별 가이드라인을 제시한다.

• 한국콘텐츠학회논문지
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• 제7권8호
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• pp.109-116
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• 2007

가상세계의 멀티미디어 콘텐츠에 있어 모션캡처는 게임, 영화, TV등 다양한 분야에서 활용되고 있다. 게임의 대부분은 모션캡처 기술이 활용되고 있다. 모션 캡처를 이용하면 보다 사실적이고 다이나믹한 화면을 나타낼 수 있을 뿐만 아니라 이전의 키 프레임(Key-Framing)방식보다 시간과 금전적 측면에서 우수할 뿐만 아니라 질적인 면에서도 훨씬 뛰어난 이점이 있다. 그러나 몇몇 전문 업체에서 활용하고 있으며 학계에서는 아직 사용 예가 매우 부족하며, 활용 시 문제점에 대해서도 많이 알려지지 않았다. 본 논문에서는 모션 캡처 장비 중 광학식 모션캡처를 이용하여 다양한 동작의 모션 데이터를 발췌하고, 사람과 다른 캐릭터에 적용할 시 나타나는 문제점에 대해 고찰해 보았다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년 학술대회 논문집 정보 및 제어부문
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• pp.391-393
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• 2006

In this paper, we develop a portable game device with uncompressed HD video and high quality sound output. Portable game devices support not only game function but also various complex functions recently. It especially supports TV-Out port to play realistic game, connecting a large screen display device. But the video and audio output signals of conventional TV-out port have the low performance and these signals are analog output. So, it is difficult that the users enjoy realistic game with benefit of high resolution digital TV. We propose the game device output with uncompressed digital signal, which has no delay of video/audio signal, also has strong immunity to external noise. Since it supports a high resolution video and high quality sound, users can playa realistic game. First, we implement the HDMI to the game device and we test reliability with the various resolutions video inputs and audio inputs. The proposed method can be applied multimedia devices requiring high performance output function as well as portable devices.

• 응용통계연구
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• 제30권3호
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• pp.345-362
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• 2017

자료 분석가가 대용량 데이터를 분석할 때 이해하기 쉽고 효과적으로 전달하기 위하여 다양한 데이터 시각화 방법들을 사용하고 있다. 그 중 3차원 그림은 2차원 화면상에서 입체로 표현하기 위하여 그림을 회전시켜야 한다. 이러한 단점을 보완하기 위하여 본 연구에서는 3차원 시각화 자료를 입체적으로 살펴보는 방법으로 가상현실을 이용한 두 가지 방식인 Batch method와 Real-time method를 제안하였다. 이 방법들을 통하여 3차원 시각화 자료를 입체적으로 살펴볼 때 3차원 구조를 좀 더 명확하게 확인할 수 있을 것이다.

• 방송공학회논문지
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• 제9권2호
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• pp.119-130
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• 2004

We have developed a prototype super-high-definition (SHD) digital cinema distribution system that can store, transmit, and display eight-million-pixel motion pictures that have the image quality of a 35-mm film movie. The system contains a movie server, a real-time decoder, and an SHB projector. Using a Gigabit Ethernet link and TCP/IP, the server transmits JPEG2000 compressed motion picture data streams to the decoder at transmission speeds as high as 300 Mbps. The received data streams are decompressed by the decoder, and then projected onto a screen via the projector. By using an enlarged TCP window, multiple TCP streams, and a shaping function to control the data transmission quantity, we achieved real-time streaming of SHD movie data at about 300 Mbps between Chicago and Los Angeles, a distance of more than 3000 km. We also improved the decoder performance to show movies with Image qualities of 450 Mbps or higher. Since UDP is more suitable than TCP for fast long-distance streaming, we have developed an SHD digital cinema UDP relay system, in which UDP is used for transmission over a fast long-distance network. By using four pairs of server-side-proxy and decoder-side-proxy, 450-Mbps movie data streams could be transmitted.