• Title/Summary/Keyword: CRTs

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CRT-02: Television Sets with Ultra-Slim Transposed Scan CRTs

  • Wesenbeeck, R.J. Van;Bosma, M.;Heynderickx, I.;Krijn, M.P.C.M.;Mastenbroek, E.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2002.08a
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    • pp.347-350
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    • 2002
  • Transposed scan is an innovation that paves the road to ultra-slim CRTs with deflection angles up to 135$^{\circ}C$ We discuss the integration of video transposition with the other video processing functions in the television set. An in-place transposition algorithm which minimizes the amount of frame memory is proposed as a low-cost solution for transposed scan conversion. The difference in visual perception of transposed scan and normal scan depends on the frame rate and the line density of the video format. We found that for high frame rates and high line densities, no difference was perceived for both scan modes.

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The Race for TVs with Higher Luminous Efficiency

  • Weber, Larry F.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2005.07a
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    • pp.3-10
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    • 2005
  • The major display contenders: LCDs, CRTs, PDPs, projection displays, FEDs, SEDs and OLEDs are each examined in terms of the most critical display characteristic, the luminous efficiency. Each technology has great opportunity for improvement, but which one will win the race?

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Using Magnetic Quadrupoles in Cathode-Ray Tubes

  • Sluyterman, A.A.S.
    • Journal of Information Display
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    • v.3 no.3
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    • pp.30-34
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    • 2002
  • CRTs can be improved by means of magnetic quadrupoles. Areas of improvement are convergence, spot shape, image-flatness and space charge compensation.

Mapped relationships between pier settlement and rail deformation of bridges with CRTS III SBT

  • Jiang, Lizhong;Liu, Lili;Zhou, Wangbao;Liu, Xiang;Liu, Chao;Xiang, Ping
    • Steel and Composite Structures
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    • v.36 no.4
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    • pp.481-492
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    • 2020
  • To study the rail mapped deformation caused by the pier settlement of simply - supported bridges with China Railway Track System III (CRTS III) slab ballastless track (SBT) system under the mode of non-longitudinal connection ballastless track slab, this study derived an analytical solution to the mapped relationships between pier settlement and rail deformation based on the interlayer interaction mechanism of rail-pier and principle of stationary potential energy. The analytical calculation results were compared with the numerical results obtained by ANSYS finite element calculation, thus verifying the accuracy of analytical method. A parameter analysis was conducted on the key factors in rail mapped deformation such as pier settlement, fastener stiffness, and self-compacting concrete (SCC) stiffness of filling layer. The results indicate that rail deformation is approximately proportional to pier settlement. The smaller the fastener stiffness, the smoother the rail deformation curve and the longer the rail deformation area is. With the increase in the stiffness of SCC filling layer, the maximum positive deformation of rail gradually decreases, and the maximum negative deformation gradually increases. The deformation of rail caused by the pier settlement of common-span bridge structures will generate low-frequency excitation on high-speed trains.

FIELD EMISSION DISPLAY TECHNOLOGY REVIEW (전계발광 디스플레이 기술 고찰)

  • 황운택;이헌택;이한영
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 1995.11a
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    • pp.257-260
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    • 1995
  • The Field Emission Display promises to improve upon the performance of the traditional CRT, while overcoming the CRTs disadvantages in size and weight which limit its use in portable applications. The technical feasibility of the FED has been reviewed and expeceted to move toward the product development.

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CRT competitive strategies towards flat panel displays

  • Sluyterman, A.A.S.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2003.07a
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    • pp.137-141
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    • 2003
  • CRTs can survive in the long run for TV applications, because of their realistic reproduction of live images. CRT technology development has to be directed towards form factor, but also attention has to be paid to the form design of sets. The CRT is the only technology allowing a doubly curved screen surface.

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Electron Beam Simulation Technology for CRTs

  • Shirai, Shoji;Oku, Kentarou
    • 한국정보디스플레이학회:학술대회논문집
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    • 2002.08a
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    • pp.385-387
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    • 2002
  • The electron beam simulation technology is indispensable for the recent electron gun design. The technology is becoming more and more important for deflection yoke (DY) design and investigation of the interference effects between gun and DY. Further, it may become vital even for shadow mask, glass funnel, exposure lens and magnetic shield.

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CRT Competitive Strategies Towards Flat Panel Displays

  • Sluyterman, A.A.S.
    • Journal of Information Display
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    • v.4 no.1
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    • pp.38-42
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    • 2003
  • CRTs can survive in the long run for TV applications, because of their realistic reproduction of live images. CRT technology development has to be directed towards form factor, but also attention has to be paid to the form design of sets. The CRT is the only technology allowing a doubly curved screen surface.

Carbon-Nanotube FED;Japanese National Project

  • Soichiro, Okuda
    • 한국정보디스플레이학회:학술대회논문집
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    • 2004.08a
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    • pp.855-859
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    • 2004
  • The Japanese National Project "Carbon Nanotube FED" is developing a high image-quality and low power-consumption field emission display (FED) by applying carbon nanotube (CNT) to the electron source. A uniform electron source with a flat-film CNTs and fine structure triodes Fir suppressing the deviation of emission is required. For realizing an FED panel, it is also necessary to develop the glass-bulb technologies for vacuum sealing, and display technologies for driving the panel by circuit electronic and for evaluating the picture quality by measuring. By achieving these technologies, an FED compatible with conventional Cathode Ray Tubes (CRTs) will be realized.

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Recent Developments in Reducing Bulkiness of CRT Glass Bulbs

  • Sugawara, Tsunehiko;Shimizu, Naoya;Murakami, Toshide
    • 한국정보디스플레이학회:학술대회논문집
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    • 2002.08a
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    • pp.359-363
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    • 2002
  • Several innovations for reducing the bulkiness of glass bulbs for flat and large CRTs have been made and further technologies are being developed by using material and structural approaches. The integrated glass technology based on these innovations will provide a lightweight shallow glass bulb for the realization of a half- depth CRT.

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