• Journal of Information Display
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• 제11권4호
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• pp.169-172
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• 2010

This paper proposes a multi-touch detection technology that can be applied to large LCDs. To achieve this goal, a set of IR LEDs and sensors was used to construct an IR matrix, and a new algorithm based on Hough transform was applied. This approach reduced the "Ghost" response of the multi-touch detection technology to make it better than other IR touch recognition technologies, and showed robust performance in terms of multi-touch recognition.

• 한국산업정보학회논문지
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• 제16권3호
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• pp.65-72
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• 2011

멀티터치 디스플레이 시스템은 참여자가 별도의 부가장치 없이 다양한 인터랙티브 미디어에 손쉽게 접근할 수 있는 기술로 최근 큰 각광을 받고 있다. 특히 마이크로소프트사의 서피스 (Microsoft Surface)와 같이 벽면형 디스플레이 이외에 원형의 디스플레이 상에서의 멀티터치 기술이 상용화됨에 따라 보다 다양한 형태의 탠저블 인터페이스로서의 가능성을 보였다. 본 논문 에서는 이를 확장하여 구형이 아닌 볼록형(Convex) 불규칙 표면을 대상으로 영상을 디스플레이 하고 디스플레이된 콘텐츠와 참여자의 상호작용이 가능한 멀티터치 인터랙션 시스템을 제안한다. 이러한 제안 방법은 각종 탠져블 인터페이스, 예를 들어 디오라마 기반의 전시 시스템이나 체감형 아케이드 게임에서 효율적으로 사용될 수 있다.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 2009년도 IWAIT
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• pp.755-759
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• 2009

This paper proposes an HDR display system using multi-projectors for presentation of HDR contents to multi-users. An HDR image is resolved by luminance and the resolved images are assigned to several projectors. The proposed system projects the HDR contents onto a large screen, and the system can display the HDR contents to multi-users. The proposed system realized to output the broad luminance by emitting the light of multi-projectors onto the same screen. In addition, tonal steps of the proposed system increase so that other projectors cover the tonal steps in the region where the dynamic range is expanded. In this paper, we indicate an effectiveness of the proposed system.

• 한국반도체및디스플레이장비학회:학술대회논문집
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• 한국반도체및디스플레이장비학회 2005년도 추계 학술대회
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• pp.151-154
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• 2005

In this paper, we present the enhanced performance of resistive RAM devices with multi-step deposited and annealed oxides. By using multi-step deposition and low temperature multi-step annealins, forming-free Re-RAM is achieved with lower operation voltages and larger resistive ratio than those of conventional Re-RAM with typical single deposited oxide.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2006년도 하계종합학술대회
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• pp.911-912
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• 2006

The recent growth in the portable display industry has been dominated by flexible display, moreover, several developing of using LCD technology has been in making the flexible display work effectively, however flexible device is not practical. Recently, the study on the multi-display screen has been published as the needs of larger screen in mobile device has been increased. The multi-display screen which is composed of two LCD panels, has the characteristics of the seamless gap between two panels. To meet the needs of this multi-display, in this paper, the study is performed to design the seamless device which consist of LCD panels, light film, back light and driver, and finally, we evaluated the effectiveness of seamless folding mechanism.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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• pp.787-790
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• 2009

High contrast red, green and blue organic light-emitting diodes were fabricated using inorganic metal multi layer composed of thin Al, KCl and thick Al and then were compared to optical and electrical characteristics with the attached polarizer and conventional OLEDs. Ambient light reflection of OLED using inorganic metal layer, polarizer and conventional metal layer were 29.2, 31.1 and 82.5% respectively. Optical characteristics of OLEDs using inorganic metal layer were max luminescence of 13040 cd/m2 and luminous efficiency of 2.12 cd/A at 8V whereas OLEDs using polarizer has 8456 cd/m2 and 1.43 cd/A at 8V each. OLEDs including inorganic metal multi layers show significant technical advantages in achieving high performance of OLED display with improved contrast ratio of 251:1, specifically in Red OLED.

• 반도체디스플레이기술학회지
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• 제18권3호
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• pp.42-46
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• 2019

In this paper, we introduce the novel idea to improve parallel test efficiency of semiconductor test. The idea includes the test interface card consisting of NoC structure able to transmitting test data regardless of ATE speed. We called the scheme "Multi-Clock" mode. In the proposed mode, because NoC can spread over the test data in various rates, many semiconductors are tested in the same time. We confirm the proposed idea will be promising through a FPGA board test and it is important to find a saturation point of the Multi-Clock mode due to the number of test chips and ATE channels.

• Journal of Information Display
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• 제5권4호
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• pp.38-44
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• 2004

In this paper, a server and client simulator for the web-based multi-view 3D image communication system is implemented by using the IEEE 1394 digital cameras, Intel Xeon server computer and Microsoft's DirectShow programming library. In the proposed system, two-view image is initially captured by using the IEEE 1394 stereo camera and then, this data is compressed through extraction of its disparity information in the Intel Xeon server computer and transmitted to the client system, in which multi-view images are generated through the intermediate views reconstruction method and finally display on the 3D display monitor. Through some experiments it is found that the proposed system can display 8-view image having a grey level of 8 bits with a frame rate of 15 fps.

• Journal of the Optical Society of Korea
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• 제19권5호
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• pp.477-486
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• 2015

We propose a novel calibration method which can be applied to all kinds of panel-type multi-view displays. We analyze how the angular, the axial, and the lateral misalignment affects the 3D image quality in a panel-type multi-view display. We demonstrate the ray optics simulation with a 3-view slanted parallax barrier system using pentile display for the quantitative calculation. Based on the analysis, we propose a new alignment pattern for all kinds of panel-type multi-view displays. The proposed pattern is sensitive to all of the angular, the axial, and the lateral misalignments. The high spatial frequency images and on and off alignment in the proposed pattern help observers to calibrate the system easily. We theoretically show the generality of the proposed alignment pattern and verify the pattern with image simulations and experiments.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 하계종합학술대회 논문집(4)
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• pp.351-354
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• 2002

DVR(Digital Video Recorder), a recently popular visual monitoring system, is required to support multi camera channel display(upto 16 channels) with various display modes in real-time. For such a multichannel display system, it is well known that tearing artifacts become more serious. Thus, one needs to design a display system for DVR so that it does not show tearing artifacts as much as possible, but keeps real-time display speed. In this paper, we present our efforts in designing and implementing a display system which rarely ever shows tearing artifacts, but without degradation of required real-time display speed, and which displays character information stably without blinking.