• Korean Journal of Remote Sensing
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• v.23 no.5
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• pp.375-383
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• 2007

This paper presents the method to provide a fast service for user in image manipulation such as zooming and panning of huge size high resolution satellite image(e.g. Giga bytes per scene). The proposed technique is based on the hierarchical structure that has 3D-Tiling in horizontal and vertical direction to provide the image service more effectively than 2D-Tiling technique in the past does. The essence of the proposed technique is to create tiles of optimum level in real time on the basis of current displaying area, which change as user manipulates huge image. Consequently, this technique provides seamless service, and will be very powerful and useful for manipulation of images of huge size without data conversion.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.443-448
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• 2006

본 논문에서는 고화질 협업 환경에서 다수의 고화질 영상들을 처리하기 위한 타일드 디스플레이(tiled display)기반의 확장성있는 디스플레이 구조를 제안한다. 제안하는 구조는 대형 고화질 디스플레이를 제어하기 위한 기술과 다수의 고화질 영상을 제한된 시스템 자원을 이용하여 효율적으로 디스플레이 하기위한 기술을 다룬다. 제안된 시스템은 영상의 획득/디코딩/디스플레이와 같은 가시화를 담당하는 Scalable Visualization Consumer 로 명명된 확장형 가시화 응용을 포함한다. 제안된 기법들을 토대로 구현된 확장형 가시화 시스템의 성능을 평가하고자 한다.

• 제어로봇시스템학회:학술대회논문집
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• 2005.06a
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• pp.1802-1807
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• 2005

Tangible interface can be understood as a newly defined concept, which can provide an effective and seamless interaction between the human as a subjective existence and the cyberspace as an objective existence. Tactile sensation is essential for many exploration and manipulation tasks in the tangible space. In this paper, we suggest the design of an integrated tactile sensor-display system that provides both of sensing and feedback with kinesthetic force, pressure distribution, vibration and slip/stretch. A new tactile sensor with PDVF strips and display system with bimorph actuators has been developed and integrated by developed signal processing algorithm. In the scenario of haptic navigation in the tangible space, tactile feedback system is successfully experimented.

• Korean Journal of Computational Design and Engineering
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• v.7 no.1
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• pp.18-26
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• 2002

The suggested modular projection system can have flexible arrangements of screens. Modular and continuous arrangements of the display system enable us to modify the screen configuration easily, so that the system can be used in various applications. The image of each screen is calculated automatically by using window projection and the tracked position of the viewer. This system also uses the off-axis stereoscopic projection for the seamless stereoscopic edge blending of multiple connections of screens. The system has been successfully tested for the general navigation model and the CAU driving simulator with motion platform.

• The Journal of the Korea Contents Association
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• v.15 no.9
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• pp.37-46
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• 2015

Nowadays, given the popularity of wearable devices, The smartwatch is considered as the leading product category and taking the main share of wearable device market. So far smartwatch is only used as an accessorial device of smart phones due to its screen size. The objective of this study is to review literatures and find solutions to overcome the screen limitations. In the literature review, several methods are introduced including using other devices as output devices, other object as screens by projecting technologies, and enlarging screen size by flexible display. Based on that, possible solutions including seamless display and user-centered interaction methods were investigated. Future research directions were also introduced at the end of this study.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.1859-1860
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• 2008

본 연구에서는 여러 대의 저해상도 프로젝터 영상을 결합하여 인간의 시야각을 채울 수 있는 하나의 고해상도 영상처럼 보이게 만드는 타일드 디스플레이(tiled display) 기법을 활용하여 가상 현실 기반 몰입형 시스템을 제작한다. 제안된 시스템은 총 8대의 프로젝터를 이용해 4096 x 1536의 고해상도 화면을 구현하며 유효 해상도는 3200 x 1200을 구현하였다. 각 프로젝터 출력 영상간의 연결 이음매가 두드러지지 않는 심리스(seamless) 기법을 활용해 관찰자의 높은 몰입감을 획득할 수 있었다. 제안된 시스템에서는 반도체 CMOS 공정을 가상 현실 공간에 구현하여 다수의 학습자들에게 기존의 정적인 이미지로 전달되던 반도체 제조 공정을 보다 효율적으로 학습하도록 돕고 있다. 구성된 시스템은 일반 개인용 PC 시스템 한 대로 구현이 가능하여 상대적으로 저렴한 가격으로 시스템을 구성할 수 있어 가상 현실 기반 몰입형 기술 교육 시스템의 대중화에 기여할 것으로 기대된다.

• Proceedings of the Korean Information Science Society Conference
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• 2006.10d
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• pp.140-145
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• 2006

유비쿼터스 컴퓨팅 환경에서 사용자는 언제 어디서나 서비스를 제공받기를 원한다. 특히 멀티미디어 서비스의 경우 사용자의 위치가 변함에 따라 사용자와 가장 가까운 디스플레이를 통한 끊김없는(seamless) 멀티미디어 서비스를 요구한다. 본 논문은 이와 같이 다양한 디스플레이 디바이스를 통한 끊김없는 멀티미디어 서비스를 지원하기 위한 ADDC (Active Display Device Change) 프레임워크를 제안한다. 우리가 제안하는 프레임워크는 사용자의 위치에 따라 더 좋은 성능을 가진 최적의 디스플레이 디바이스를 검색하기 위하여 시맨틱(semantic) 서비스 디스커버리 기법을 이용하였다. 또한, 디스플레이 변경 시 능동적인 멀티미디어 세션 이동을 지원하는 핸드오프 관리자를 각 디스플레이 디바이스에 둔다. 마지막으로 디스플레이 디바이스의 특성을 고려한 멀티미디어 품질 적응(adaptation)을 위하여 트랜스코딩 서버를 이용한다. 제안한 프레임워크는 ICU에서 개발한 유비쿼터스 컴퓨팅 환경을 위한 미들웨어인 Active Surroundings를 이용하여 구현하였다.

• Journal of Aerospace System Engineering
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• v.15 no.6
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• pp.50-58
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• 2021

Byteflight is developed based on RS-485 communication (an international standard), and it can be used as a data bus during the operation of an integrated avionics system in the latest aircraft. Therefore, the integrated avionics system can perform an effective and safe flight mission only when the accurate and seamless display of flight information, communication, and accurate functions of navigation are implemented. In this study, cause analysis and failure investigation were performed on screen abnormalities and communication interruptions due to signal interference in the Byteflight data bus of the integrated avionics system during aircraft operation. To improve signal interference between avionics units, the branch point and wiring path of the Byteflight data bus were changed, and the verification result of the improved method was also described.

• Journal of Advanced Information Technology and Convergence
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• v.9 no.2
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• pp.15-27
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• 2019

This paper deals with a web-based public address system for conveying information for different institutions. An architecture for a Short Messaging Service (SMS) based public address (PA) system that can be programmed by an authorized mobile phone or device is proposed. This PA system will facilitate information transfer from heads of offices, managers, directors, and deans of the institutions to its constituents or unit area as well as enable postings of information with proper authentication and validation remotely. The system supports high priority messaging, allowing the conveyance of critical and time sensitive information. The mobility management support for the PA system will be based on the Hierarchical Mobile Internet Protocol version 6 (HMIPv6), hence, allowing for a seamless connectivity to the system. The major advantage of this proposed PA system as compared with the traditional electronic displays and bulletin boards is seamless mobility wherein the display devices can be programmed remotely by heads of the institutions and business organization. It also allows faster communication and immediate actions concerning the different institutions, organizations, and businesses, thus, ensuring high productivity.

• Journal of Korea Multimedia Society
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• v.12 no.10
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• pp.1363-1373
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• 2009

In a ubiquitous computing environment, people more and more become to use multiple displays. When using such ubiquitous displays, it is needed for users to seamlessly interact with the displays for a certain content. In this paper, we propose a seamless interface that allows users to see photos across multiple displays. Many photos can be displayed on a screen at the same time because they are shown in 3D space. And a group of photos is represented using a cube metaphor. A user can manipulate photos directly using a touch screen and also see the photos continuously using PDAs when the user moves to other places. In addition, the user can interact with the photos seamlessly using another display. The developed system was designed to interact according to user's movements and not to draw user's attention too much as a kind of ambient display. Using RFID and ultrasonic sensors it recognizes a user and the user's proximity to the display, and then automatically determines the screen image and the user interface accordingly.