• Title/Summary/Keyword: display controller

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A Multi-Application Controller for SAGE-enabled Tiled Display Wall in Wide-area Distributed Computing Environments

  • Fujiwara, Yuki;Date, Susumu;Ichikawa, Kohei;Takemura, Haruo
    • Journal of Information Processing Systems
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    • v.7 no.4
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    • pp.581-594
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    • 2011
  • Due to the recent advancement of networking and high-performance computing technologies, scientists can easily access large-scale data captured by scientific measurement devices through a network, and use huge computational power harnessed on the Internet for their analyses of scientific data. However, visualization technology, which plays a role of great importance for scientists to intuitively understand the analysis results of such scientific data, is not fully utilized so that it can seamlessly benefit from recent high-performance and networking technologies. One of such visualization technologies is SAGE (Scalable Adaptive Graphics Environment), which allows people to build an arbitrarily sized tiled display wall and is expected to be applied to scientific research. In this paper, we present a multi-application controller for SAGE, which we have developed, in the hope that it will help scientists efficiently perform scientific research requiring high-performance computing and visualization. The evaluation in this paper indicates that the efficiency of completing a comparison task among multiple data is increased by our system.

A Study on the Active Vibration Isolator PID Auto-tuning Using PSO Algorithm (PSO알고리즘을 활용한 능동 제진 시스템 PID 오토 튜닝에 관한 연구)

  • An, Il Kyun;Huh, Heon;Kim, Hyo-Young;Kim, Kihyun
    • Journal of the Semiconductor & Display Technology
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    • v.21 no.4
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    • pp.59-64
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    • 2022
  • Vibration is one of the factors that degrades the performance of equipment and measurement equipment used in high-tech industries such as semiconductors and display. The vibration isolator is classified into passive type and active type. The passive vibration isolator has the weakness of insufficient vibration isolation performance in the low frequency band, so an active vibration control system that can overcome these problems is used recently. In this paper, PID controller is used to control the active vibration isolator. Methods for setting the gain of the PID controller include the Zeigler-Nichols method, the pole placement method. These methods have the disadvantage of requiring a lot of time or knowing the system model accurately. This paper proposes the gain auto tuning method of the active vibration isolator applied with the PSO algorithm, which is an optimization algorithm that is easy to implement and has stable convergence performance with low calculations. It is expected that it will be possible to improve vibration isolation performance and reduce the time required for gain tuning by applying the proposed PSO algorithm to the active vibration isolator.

Using a high-resolution LED display Dual Scanning Image Control System Design (듀얼 스캐닝을 이용한 고해상 LED 전광판 영상제어장치설계)

  • Ha, Young-Jea;Kim, In-Jea;Kim, Sun-Hyung
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.15 no.7
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    • pp.1415-1422
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    • 2011
  • In this paper, full color billboards for the efficient expression of the resolution to offer dual-scanning control method, using the LED display it on a fixed pixel video signal to the pixel dot pattern was changed. And DICT(Dynamic Image Correction Technology) using the main controller in accordance with video information, histogram equalization of image gray scale values to be uniformly distributed, and dynamically improves image quality by converting the area, and a dual auto-scan input video switching controller board as the pixels in the LED Module by controlling the physical manifestation of the existing board LED pixel dots than 4 times the resolution proposes a technique that can be expressed and made it through testing verified the performance.

A Design of Over-driving Controller to Reduce Motion Blur (Motion Blur를 줄이기 위한 Over-driving Controller 설계)

  • Nam, Ki-Hun;Shin, Yong-Seb
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.47 no.4
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    • pp.1-6
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    • 2010
  • We can see the motion blur phenomenon on theedge of the moving picture when it moves in the LCDs. To reduce this phenomenon, we suggested a new over-deriving method, implemented on the board XUP Virtex-2 Pro Development System by using Virtex-2 Pro XUP XC2VP30 and improved the Motion Blur. In this method, we did not use additional parts except for a SDRAM. Hardware implementation for IP and data interface were handled in software. In this paper, we used the moving bar and the moving video image as a design model. We also showed that the afterimage was reduced and the vivid moving images was displayed. through this method.

The Haptic Display Model Development with the Karnopp Friction Model and the Proxy Concept (카르노프 마찰모델과 탐촉구 개념을 이용한 햅틱 디스플레이 모델 개발)

  • Kwon, Hyo-Jo;Kim, Ki-Ho;Oh, Chae-Youn
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.28 no.9
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    • pp.1344-1351
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    • 2004
  • This study develops a haptic display model which is an indispensable for the force generation in the virtual environment. In developing the haptic display model, a Proxy concept and a Karnopp friction model are utilized to generate the reaction force and the friction force. Also this study develops a 2 D.O.F. remote wiping system. This system is composed of a 2 D.O.F. master manipulator, a force sensor equipped 2 D.O.F. slave manipulator and a real time controller. With the developed remote wiping system, this study identifies the friction characteristic of the aluminum, acryl and rubber plate. The results are used as the dynamic friction coefficient of the haptic display model. This study shows the efficiency of the developed haptic display model by the comparison between the friction characteristic of the haptic display with the developed haptic display model and the friction characteristic of the real aluminum, acryl and rubber plate.

Using Secondary Display in Interactive FPS Game and Its Availability (체감형 FPS 게임에서 보조 Display의 활용성)

  • Park, Chang-Bum;Park, Won-Bae;Paik, Doo-Won
    • Journal of Korea Game Society
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    • v.10 no.2
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    • pp.29-36
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    • 2010
  • As more and more advanced technology implemented in Computer Game, various of technical skill must be applied to satisfy the demand of the users specifically in the immersion and convenience of the games. As a result, The number of interactive games, which are controlled by user's physical action so that make the games more immersible, are increasing. In Addition, as the amount of information that happens in the games increases, many studies are going on to provide efficient user-interface. In this study, we develop an interactive game using a controller designed by us, which consist of Wii controller and an attached secondary display that provides game information to user. In addition, we conduct a survey with questions about immersion and convenience of the game to understand how users feel when doing the suggested game, and to compare our game environment with general FPS game environment that uses mouse and keyboard.

Study on Controller Design of AC Servo Permanent Magnet Synchronous Motor by Matrix Converter : Speed Controller (매트릭스 컨버터에 의한 AC 서보 영구자석형 동기전동기의 제어기 설계에 대한 고찰 : 속도제어기)

  • Jeong, Chung-Il;Lee, Sang-Cheol;Mo, Dong-Yeong;Choi, Chang-Young;Kim, Tae-Woong;Park, Gwi-Geun
    • Proceedings of the KIPE Conference
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    • 2008.06a
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    • pp.106-108
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    • 2008
  • This paper deals with the design for speed controller to drive PMSM by matrix converter without DC-link circuit as the power conversion system of AC servo motor drive. To design the speed controller of PMSM drive, the closed-loop transfer function of speed controller is calculated and then the frequency-domain response characteristics are analyzed by bode plot using Matlab. Based on the results by bode plot, the speed control gains are determined. As the real effects of controller designed in the frequency-domain display in the time-domain, the performance of speed controller is confirmed by the step response of speed controller. The design examples are shown and its validity of the design method mentioned in the paper is verified through PSIM simulation.

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The design and FPGA implementation of a general-purpose LDI controller for the portable small-medium sized TFT-LCD (중소형 TFT-LCD용 범용 LDI 제어기의 설계 및 FPGA 구현)

  • Lee, Si-Hyun
    • Journal of the Korea Society of Computer and Information
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    • v.12 no.4
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    • pp.249-256
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    • 2007
  • AIn this paper, a new desist of LDI controller IC for general purpose is proposed for driving the LDI(LCD Driver Interface) controller in $4{\sim}9$ inches sized portable small-medium TFT-LCD(Thin Film Transistor addressed -Liquid Crystal Display) panel module. The designed LDI controller was verified on the FPGA(Reld Programmable Gate Array) test board, and was made the interactive operation with the commercial TFT-LCD panel successfully. The purpose of design is that it is standardized the LDI controller's operation by one LDI controller for driving all TFT-LCD panel without classifying the panel vendor, and size. The main advantage for new general-purpose LDI controller is the usage for the desist of all panel's SoG(System on a Glass) module because of the design for the standard operation. And in the previous method, it used each LDI controller for every LCD vendor, and panel size, but because a new one can drive all portable small-medium sized panel, it results in reduction of LDI controller supply price, and manufacturing cost of AV(Audio Video) board and panel. In the near future, the development of SoG IC(Integrated Circuit) for manufacturing more excellent functional TFT-LCD panel module is necessary. As a result of this research, the TFT-LCD panel can make more small size, and light weight, and it results in an upturn of domestic company's share in the world market. With the suggested theory in this paper, it expects to be made use of a basic data for developing and manufacturing for the SoG chip of TFT-LCD panel module.

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3D LED display controlled by an Android remote controller (안드로이드 리모콘으로 제어하는 3차원 LED 디스플레이)

  • Heo, Gyeongyong;Jang, Joon-Ho
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2013.07a
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    • pp.421-422
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    • 2013
  • 본 논문에서는 기존 전광판의 문제점을 보안할 수 있는 방법의 하나로 3차원 LED 디스플레이와 이를 제어할 수 있는 안드로이드 앱을 제안하고 구현하였다. 2차원 매트릭스 방식을 사용하고 있는 현재의 전광판을 3차원으로 확장함으로써 다양한 정보 전달이 가능하며 제어를 위해 별도의 하드웨어를 사용하지 않고 안드로이드 앱으로 블루투스 통신을 통해 제어함으로써 간편하면서도 확장이 용이한 제어 구조를 가질 수 있다.

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Protection Circuits in Flat Fluorescent Lamp(FFL) Backlight Inverter (LCD 백라이트용 면광원 램프 구동용 인버터 보호회로에 관한 연구)

  • Hur, Jeong-Wook;Lim, Sung-Kyoo
    • Proceedings of the IEEK Conference
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    • 2008.06a
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    • pp.1067-1068
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    • 2008
  • An inverter for driving flat fluorescent lamp(FFL) with various protection circuits using micro controller(Micom) is proposed in this paper. The inverter will be shut down if the fault operating conditions such as open lamp, over current and over voltage are detected.

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