• Title/Summary/Keyword: IR touch

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Multi-touch Detection Technology Using a Divergence IR Beam Profile for Large LCD Touch Solutions

  • Lee, Young-Joon;Lee, Won-Suk;Pushchin, Victor;Song, Moon-Bong
    • Journal of Information Display
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    • v.11 no.4
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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.

Large-size LCD with touch-sensing capability

  • Zhu, X.L.;Sit, Cass K.M.;Ma, Mark W.;Feng, Y.J.;Ng, K.W.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2009.10a
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    • pp.1519-1522
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    • 2009
  • We describe a 32" liquid-crystal display (LCD) with multi-touch sensing capability by integrating IR detector arrays onto the LED backlight plate. A transparent light guide is placed in front of the display screen, with IR LEDs disposed at its edges and emitting IR light into the light guide, the light is trapped by total internal reflection within the light guide to be as touch-sensing light. A physical contact with the acrylic plate surface will stimulate some trapped light to be escaped from the light guide and pass through LCD panel to be detected by the IR detectors. The touch-sensing LCD with this configuration can locate simultaneous multiple touche points on the touchable surface.

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A Study on Touchless Panel based Interactive Contents Service using IrDA Matrix

  • Lee, Minwoo;Lee, Dongwoo;Kim, Daehyeon;Ann, Myungsuk;Lee, Junghoon;Lee, Seungyoun;Cho, Juphil;Shin, Jaekwon;Cha, Jaesang
    • International Journal of Internet, Broadcasting and Communication
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    • v.7 no.2
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    • pp.73-78
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    • 2015
  • Touch panel is mainly applied to pressure type touch panel but it occur a low recognition rate and error during long-term use. So, it is partly applied to capacitive touch panel to compensate for these problems but it also can occur a same problems via pollutions. Touch technology has developed a various method but it is not used because of high costs and difficult installation process. So, in this paper, we proposed an input method of touchless panel using IrDA matrix. This method is conducted using an IrDA Matrix composed of depth sensor. It is possible to offer a various contents for multi user. The proposed technology need a development of a high sensitivity sensing method and high-speed processing method of position information for Seamless operation control. And, it is required high-precision drive technology. Also, we proposed a Seamless user recognition for interactive contents service through a touchless panel using IrDA matrix.

Large scale interactive display system for touch interaction in stereopsis (입체 영상에서 터치 인터랙션을 위한 대규모 인터랙티브 디스플레이 시스템)

  • Kang, Maeng-Kwan;Kim, Jung-Hoon;Jo, Sung-Hyun;Joo, Woo-Suck;Yoon, Tae-Soo;Lee, Dong-Hoon
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2010.10a
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    • pp.252-255
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    • 2010
  • In this thesis, it suggests large scale interactive display system which is able to various touch interaction and bases on infrared LED BAR and using 3D. Interaction layer formed on space from screen which is able to feel 3D using suggested IR LED BAR. It gets the image in real time what is composed in interaction section using infrared camera with band pass filter. The image finds touch interaction coordinate through image processing module and saves as packet. It send packet to server through network data communication. It analyze packet by metaphor analysis module and save as metaphor event and send it to contents. On contents, it practices to metaphor event result in real time so it makes use touch interaction in stereopsis. According to this process, it does not need touch the screen at firsthand but it is possible system and touch interaction so touch interaction is possible while use 3D.

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A Study on Smart Touch Projector System Technology Using Infrared (IR) Imaging Sensor (적외선 영상센서를 이용한 스마트 터치 프로젝터 시스템 기술 연구)

  • Lee, Kuk-Seon;Oh, Sang-Heon;Jeon, Kuk-Hui;Kang, Seong-Soo;Ryu, Dong-Hee;Kim, Byung-Gyu
    • Journal of Korea Multimedia Society
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    • v.15 no.7
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    • pp.870-878
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    • 2012
  • Recently, very rapid development of computer and sensor technologies induces various kinds of user interface (UI) technologies based on user experience (UX). In this study, we investigate and develop a smart touch projector system technology on the basis of IR sensor and image processing. In the proposed system, a user can control computer by understanding the control events based on gesture of IR pen as an input device. In the IR image, we extract the movement (or gesture) of the devised pen and track it for recognizing gesture pattern. Also, to correct the error between the coordinate of input image sensor and display device (projector), we propose a coordinate correction algorithm to improve the accuracy of operation. Through this system technology as the next generation human-computer interaction, we can control the events of the equipped computer on the projected image screen without manipulating the computer directly.

Implementation of Multi-Touch System using FTIR (전반사 장애를 이용한 멀티터치 시스템의 구현)

  • Cha, Soo-Jung;Lee, Goo-Yeon
    • Journal of Industrial Technology
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    • v.30 no.A
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    • pp.25-29
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    • 2010
  • In this paper, we implement a multi-touch system using FIDR. The implementation consists of hardware manufacture and development of image processing system. In the hardware system, touch screen, infrared LED placements and infrared camera are made. The image processing procedure is to extract each pointer's coordinates from image data and includes binary-coding, noise-elimination, labeling and calculation of mass center. From the implementation, we are able to make a multi-touch system with considerably lower cost than the existing ones.

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A Study on Air Interface System (AIS) Using Infrared Ray (IR) Camera (적외선 카메라를 이용한 에어 인터페이스 시스템(AIS) 연구)

  • Kim, Hyo-Sung;Jung, Hyun-Ki;Kim, Byung-Gyu
    • The KIPS Transactions:PartB
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    • v.18B no.3
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    • pp.109-116
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    • 2011
  • In this paper, we introduce non-touch style interface system technology without any touch style controlling mechanism, which is called as "Air-interface". To develop this system, we used the full reflection principle of infrared (IR) light and then user's hand is separated from the background with the obtained image at every frame. The segmented hand region at every frame is used as input data for an hand-motion recognition module, and the hand-motion recognition module performs a suitable control event that has been mapped into the specified hand-motion through verifying the hand-motion. In this paper, we introduce some developed and suggested methods for image processing and hand-motion recognition. The developed air-touch technology will be very useful for advertizement panel, entertainment presentation system, kiosk system and so many applications.

Development of Universal Remote Control System using TFT Color LCD (TFT Color LCD를 사용한 통합형 리모컨 개발)

  • Kim Yong-Pyo;Yoon Dong-Han;Choi Un-Ha
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.10 no.8
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    • pp.1495-1501
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    • 2006
  • In this paper, It is purposed to Develope Development of Home Automation Remote Control System using W Color touch LCD(liquid crystal display). This control remotely with remote control innovative and ergonomic design, right combination of LCD and hard buttons and its industry leading technology puts your customers at the cutting-edge of home entertainment. Remote Control for casual users is programmed automatically programmed with multiple free step macros and IR commands. Radio Frequency (RF) operation provides 50-100 inch range though walls and doors. Editor includes a vast library of IR codes for hundreds of brands and models of A/V components. This database is constantly growing with the inclusion of new devices every month. Keep your software up to date by using the Live Update feature. Rather than un-installing and re-installing the software, you download updates to the software from the internet.

Multi Spatial Interaction Interface in Large-scale Interactive Display Environment (대규모 인터랙티브 디스플레이 환경에서의 멀티 공간 인터랙션 인터페이스)

  • Yun, Chang-Ok;Park, Jung-Pil;Yun, Tae-Soo;Lee, Dong-Hoon
    • The Journal of the Korea Contents Association
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    • v.10 no.2
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    • pp.43-53
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    • 2010
  • The interactive display is providing various interaction modes to users through various ubiquitous computing technologies. These methods were studied for their interactions, but the limits that it is provided to only single user and the device usability were generated. In this paper, we propose a new type of spatial multi interaction interface that provide the various spatial touch interactive to multi users in the ambient display environment. Therefore, we generate the interaction surface so that a user can interact through the IR-LEDs Array Bar installed in the ceiling of the ambient display environment. At this time, a user can experience the various interactions through the spatial touch in an interaction surface. Consequently, this system offers the interactive display and interface method that the users can interact through natural hand movement without the portable devices.

INFRARED THERMOGRAPHIC ANALYSIS OF TEMPERATURE RISE ON THE SURFACE OF BUCHANAN PLUGGER (적외선열화상장치를 이용한 Buchanan plugger 표면의 온도상승 분석)

  • Choi, Sung-A;Kim, Sun-Ho;Hwang, Yun-Chan;Youn, Chang;Oh, Byung-Ju;Choi, Bo-Young;Juhng, Woo-Nam;Jeong, Sun-Wa;Hwang, In-Nam;Oh, Won-Mann
    • Restorative Dentistry and Endodontics
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    • v.27 no.4
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    • pp.370-381
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    • 2002
  • This study was performed to evaluate the temperature rise on various position of the Buchanan plugger, the peak temperature of plugger's type and the temperature change by its touching time of heat control spling. The heat carrier system 'System B' (Model 1005, Analytic Technologies, USA) and the Buchanan's plug-gers of F, FM, M and ML sizes are used for this study. The temperature was set to 20$0^{\circ}C$ which Dr. Buchanan's "continuous wave of condensation" technique recommended on digital display and the power level on it was set to 10. In order to apply heat on the Buchanan's pluggers, the heat control spring was touched for 1, 2, 3, 4 and 5 seconds respectively. The temperature rise on the surface of the pluggers were measured at 0.5 mm intervals from tip to 20 mm length of shank using the infrared thermography (Radiation Thermometer-IR Temper, NEC San-ei Instruments, Ltd, Japan) and TH31-702 Data capture software program (NEC San-ei Instruments, Ltd, Japan). Data were analyzed using a one way ANOVA followed by Duncan's multiple range test and linear regression test. The results as follows. 1. The position at which temperature peaked was approximately at 0.5 mm to 1.5 mm far from the tip of Buchanan's pluggers (p<0.001). The temperature was constantly decreased toward the shank from the tip of it (p<0.001). 2. When the pluggerss were heated over 5 seconds, the peak temperature by time of measurement revealed from 253.3$\pm$10.5$^{\circ}C$ to 192.1$\pm$3.3$^{\circ}C$ in a touch for 1 sec, from 218.6$\pm$5.$0^{\circ}C$ to 179.5$\pm$4.2$^{\circ}C$ in a touch for 2 sec, from 197.5$\pm$3.$0^{\circ}C$ to 167.5$\pm$3.7$^{\circ}C$ in a touch for 3 sec, from 183.7$\pm$2.5$^{\circ}C$ to 159.8$\pm$3.6$^{\circ}C$ in a touch for 4 sec and from 164.9$\pm$2.$0^{\circ}C$ to 158.4$\pm$1.8$^{\circ}C$ in a touch for 5 sec. A touch for 1 sec showed the highest peak temperature, followed by, in descending order, 2 sec, 3 sec, 4 sec. A touch for 5 sec showed the lowest peak temperature (p<0.001). 3. A each type of pluggers showed different peak temperatures. The peak temperature was the highest in F type and followed by, in descending order, M type, ML type. FM type revealed the lowest peak temperature (p<0.001). The results of this study indicated that pluggers are designed to concentrate heat at around its tip, its actual temperature does not correlate well with the temperature which Buchanan's "continuous wave of condensation" technique recommend, and finally a quick touch of heat control spring for 1sec reveals the highest temperature rise.