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WO1994017637A1 - Systeme d'affichage video - Google Patents

Systeme d'affichage video Download PDF

Info

Publication number
WO1994017637A1
WO1994017637A1 PCT/GB1994/000125 GB9400125W WO9417637A1 WO 1994017637 A1 WO1994017637 A1 WO 1994017637A1 GB 9400125 W GB9400125 W GB 9400125W WO 9417637 A1 WO9417637 A1 WO 9417637A1
Authority
WO
WIPO (PCT)
Prior art keywords
cathode ray
module
ray tube
video display
video
Prior art date
Application number
PCT/GB1994/000125
Other languages
English (en)
Inventor
Marcus Lewis
Original Assignee
C.D. Interactive Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB939301279A external-priority patent/GB9301279D0/en
Application filed by C.D. Interactive Ltd. filed Critical C.D. Interactive Ltd.
Priority to AU58639/94A priority Critical patent/AU5863994A/en
Publication of WO1994017637A1 publication Critical patent/WO1994017637A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3147—Multi-projection systems

Definitions

  • Video walls are banks of video display units arranged adjacent one another in the same plane, so as to cooperate in displaying images to a larger scale. Such video walls are to be installed in football stadia or department stores, for example.
  • the invention in one aspect, provides a video display module for a video wall, comprising an assembly of video display units whose front edges are abutting and are all in the same plane in a rectangular array, and a common box-shaped enclosure for the assembly.
  • the assembly includes support means for attachment to corresponding support means on an adjacent such video display module whereby to join the modules face to face with all the front edges lying in the same plane.
  • the support means includes a load-bearing frame which holds the front edges rigidly adjacent one another, against the bending moment of the weight of each video display unit, and also is capable of supporting the weight of at least one such module from above, under compressive loading, or at least one such module suspended below, under tensile loading.
  • the modules are stackable, either resting on a support, or suspended, for example by hawsers, from a ceiling.
  • the support means may advantageously comprise bolts for releasably connecting the frames across an interface between two such modules, upon access from the interior of j st one of the modules.
  • the support means preferably comprises means for attaching hawsers for suspending the module.
  • the enclosure preferably comprises panels releasably attachable to the frame to form an exterior wall of the module or an exterior wall of two or more joined modules.
  • the modular video wall system which would be assembled from such modules is readily re ⁇ onfigurable, simply by removing or reattaching such panels, so that the panels form only the exterior surface and do not form part of the interior of the composite video wall structure.
  • the invention also provides a video display system comprising a plurality of video display units arranged in a rectangular array, and an electronic control system arranged to receive one or more video input signal (s) and to display the signal (s), and switchable between modes either to make the image appear over two or more units with different parts shown on different units, or else to make the whole image appear on each of two or more units.
  • the system comprises a programmable memory for a predetermined sequence of switching between the said modes and/or between different signal sources.
  • the system includes a remote master control system which controls the operation of two or more of the said video display systems.
  • the system preferably includes means for mixing video inputs from different sources.
  • the invention also provides a video display module for a video wall comprising a plurality of video display units and a common housing, and a switched mode power supply connected to supply all the display units.
  • the invention provides a video display module for a video wall comprising a plurality of video display units and a common housing, and an electric lamp inside the housing for illuminating the interior for servicing and of sufficient power to provide anti-frost and anti-condensation protection for the interior when the module is used outdoors.
  • the invention also provides a video image processor for controlling a plurality of video display units in a video wall, comprising means for digitizing the input video signal and providing the digitized signal to each of the video display units, a system manager for providing matrix manager signals for controlling the distribution of the digitized signals to the different video display units, in accordance with the number and disposition of video display units in the video wall, and a clock generator for sequencing the supply of the digitized signals to the video display units with a frequency which depends on the number of video display units.
  • the processor is of universal application irrespective of the number of video display units, or at least irrespective of the number of 2 x 2 modules being for example 1, 4, 16 or 64.
  • the invention also provides a cathode ray tube with corner mounting lugs specially formed such that their edges do not project beyond the tangents from the major edges of the screen, to allow four such tubes to be assembled in a 2 x 2 module with at least the middle portions of their adjacent edges contiguous.
  • the lugs may include a recess on the diagonal line of the tube, for receiving a clamping bolt.
  • the invention also provides a sleeve for a cathode ray tube, in the form of an open-ended rigid box, a front open end of the box comprising a rectangular-section frame supporting the screen of the cathode ray tube, with formations on the inside of the corners adapted for fixture to corner lugs of the cathode ray tube.
  • the sleeve enables the module to be assembled by just one person, by adding one screen at a time to a suitable frame, the frame providing independent support for each of the sleeves.
  • the sleeve may also take the form of an open-ended rigid box, a front open end of the box comprising a rectangular-section frame for supporting the screen of the CRT, the frame having openings over the middle portions of its four front edges, intermediate its corners, to allow the edges of the screen to touch a corresponding edge of the screen supported in an identical sleeve with the screens co-planar.
  • the invention also provides a pre-assembly comprising a cathode ray tube held rigidly within a sleeve as defined above; and also provides a video display module comprising a frame adapted to receive serially, and to provide independent support for, a plurality of such pre-assemblies.
  • Fig. 1 is a front view of a 2 x 2 module
  • Fig. 2 is a front view of the peripheral band of a conventional cathode ray tube screen, together with corner lugs,
  • Fig. 3 is a view corresponding to Figure 2 but of a cathode ray tube modified in accordance with the invention
  • Fig. 4 is a front view, to a slightly reduced scale, of one of the four sleeves of the 2 x 2 module of Figure
  • Fig. 5 is a left-hand side view of the sleeve of Figure 4
  • Fig. 6 is a top plan view of the sleeve of Figures 4 and 5
  • Fig. 7 is a greatly enlarged perspective view of the top left-hand corner, viewed from above and from the left, of the sleeve of Figures 4-6, including a corner-fixing bracket, and
  • Fig. 8 is a schematic block diagram of the electrical arrangement in the module.
  • the video wall module shown in Figure 1 consists of four cathode ray tubes 3 mounted independently in sleeves 8 which are themselves supported in a 2 x 2 array in a common frame.
  • This frame also houses electronic control circuitry, described below with reference to Figure 8.
  • This module 1 can be used as a self-contained unit on its own, or joined with other such modules to create a video wall of 2 x 2, 4 x 4, 8 x 8, 8 x 16, 16 x 16, or 16 x 32, cathode ray tubes, for example. It should however be understood that modules of other shapes, such as 1 x 3, are also feasible, and can create video walls of different array dimensions.
  • the electronic control is designed to adapt to any required configuration, as will be described in greater detail below.
  • Each cathode ray tube screen or monitor 3 has a substantially rectangular screen area, of the flatter-squarer tube form (FST), which in this example is 21 inches (53 cm) across the diagonal, and is bounded by a rectangular margin 2 with a slightly curved periphery.
  • the periphery of the screen is surrounded by a metal band 4, omitted in Figure 1 for the sake of clarity but shown in Figure 3.
  • It is the outer dimensions of this band 4 which represent the maximum dimensions of the monitor 3, and define the limit on how close the picture areas can be on adjacent screens.
  • the distance between the picture areas is the minimum: it is simply the sum of the widths of the margin 2 and the metal band 4, multiplied by 2.
  • the thickness of the sleeve 8 is the same as that of the metal band 4, so that the metal bands 4 of adjacent screens 3 are just touching.
  • corner fixing lugs 5 as shown in Figure 2 which generally have portions projecting beyond the tangents 7 to the peripheries of the screen taken at the midpoints of the edges of the screen. These projecting portions would interfere with one another and would restrict the proximity achievable in the array of Figure 1. Accordingly, with the benefit of the present invention, these corner fixing lugs are adapted to the form shown in Figure 3. In Figure 3, each corner fixing lug 6 lies within the tangents 7, avoiding mutual interference. It is possible to adapt a conventional monitor to the form shown in Figure 3, simply by cropping the lugs with a suitable tool.
  • the module 1 is designed for assembly by just one person, if necessary. It is assumed that one person cannot easily carry more than one monitor at a time, so the module is designed for assembly by the successive addition of the monitors into a fixed frame. With the benefit of the invention, this is achieved by forming pre-assemblies consisting of the monitor 3 and a sleeve 8 as shown in Figures 4-6. Each pre-assembly can be handled independently, and can be slid into place in the stationary framework.
  • the frame is not shown in the drawings, but is of conventional box shape, sufficient to accommodate the four pre-assemblies.
  • the front face of the frame consists of a rectangular structure whose outer edge coincides with that of the assembly of sleeves shown in Figure 1. This rectangular structure is braced by horizontal and vertical struts crossing at the centre of the rectangle, and corresponding in position to the interfaces between the sleeves 8 of Figure 1.
  • the frame also has side pieces and a rear face, all of which provide additional support for the sleeves 8.
  • the sides, top and bottom of the box-shaped frame are preferably formed with rails for guiding and supporting the sleeves so that no sleeve relies on any other sleeve for support.
  • the sleeve 8 is an open-ended rectangular box, designed to house the monitor.
  • the front portion 81 is a rectangular-section frame supporting the screen of the cathode ray tube, by means of corner plates 82, shown more clearly in Figure 7, to which corner lugs 6 of the monitor may be attached.
  • This front frame 81 has openings 83, rectangular in shape, over the middle portions of its four front edges, intermediate its corners. These openings 83 allow the edges of the screens, i. e. the metal bands 4, to touch one another, when two pre-assemblies are placed adjacent one another.
  • a corner-fixing bracket 9 with a pair of holes 91, is provided for gripping the corner-fixing lug 6 between the plate 82 and the bracket 9.
  • a pair of bolts 93 extending through holes 92 in the sleeve 8 are screwed into the internally-threaded holes 91 of the bracket 9 to secure it in the corner of the sleeve.
  • the sleeve 8 further comprises full-length rectangular wall panels 86R and 86B on the right-hand side and at the base, respectively; and approximately half-size wall panels 86L and 86T at the left-hand side and at the top, respectively.
  • the front edges of these wall panels depend from flanges 85 of shoulders 84 at the rear of the front rectangular-section frame 81.
  • Each wall panel is formed with ventilation grilles 87.
  • the walls define a rear section of the sleeve 8, protecting the cathode ray tube behind the screen.
  • the dimensions of the rear portion of the sleeve 8 are slightly smaller, by virtue of the shoulder 84, so that they can slot into the support frame (not shown) of the module 1.
  • the external faces of the support frame, or of closure panels mounted over the support frame can then be flush with the outer faces of the front rectangular-section frame 81 of the sleeve.
  • the weight of the sub-assembly is borne by the support frame of the module primarily on the base wall panel 86B. Since much of the weight of a cathode ray tube is at the front, compensating weights, in the form of metal rollers, may be added at the rear, to counterbalance the sub-assembly and the module itself. These rollers are most conveniently secured to the support frame of the module, and are not shown in the drawings. They are of course designed to be removable.
  • the sub-assemblies When the sub-assemblies are loaded into the support frame, by sliding from the front, they are orientated so that the full-length wall panels coincide with the outer faces of the module 1. In this way, the half-length wall panels face one another within the module 1, and allow free access to the cathode ray tubes in the interior of the module.
  • the corner edge joining both half-length wall panels will always coincide with the central horizontal axis of the module, in this particular example.
  • the support frame of the module has formations for securing hawsers for suspension of the module from suitable ceiling or roof mounts.
  • the frame also has fixtures for connection to adjacent modules. Where a module is intended to be secured to an adjacent module, the outer panels, secured over the frame and behind the front portions of the sleeves, would be removed to allow mutual interfacing of the frames of adjacent modules.
  • the monitors are driven electrically by a video image processor which is mounted within the support frame of the module, usually on the bottom rear section of a back plate. Access ports, connectors and potentiometers, etc. can then be accessed through the back plate.
  • the bottom third section of the back plate can be permanently fixed to the frame, with the video image processor on its inside, whilst the upper two-thirds section can be removable, housing only a ventilation fan, allowing easy access and servicing of the module.
  • the video image processor comprises a programmable video wall controller 100 to which is connected a control port and a video input terminal, and receives power from a switched mode mains distribution unit 101, connected to mains power.
  • Four outputs from the programmable video wall controller 100 are connected to respective tube drivers 102-105, each of which receives mains power from the mains distribution unit 101, the tube drivers being connected to respective monitors 31-34.
  • each module may be provided with an internal electric lamp inside its housing, for illuminating the interior for servicing, and preferably of sufficient power to provide anti-frost and anti-condensation protection for the interior when the module is used outdoors.
  • the programmable video wall controller 100 has the following functional blocks: a colour decoder; digitizers; four memory cards; a system manager and two clock generators.
  • the colour decoder accepts the video input in any of the popular formats (VHS, SVHS, RGB) and outputs separate red, green and blue signals at standard levels.
  • the digitizers convert the RGB signals into digital format for driving the digital video data bus, which in turn drives each of the four memory cards.
  • Each memory card contains two banks of memory that are used on alternate image fields: one bank processes even fields of the video image and the other processes odd fields.
  • One clock generator is for writing, and one for reading, to supply control signals to the memory cards together with matrix management signals from the system manager.
  • the output image can be expanded by a factor of 2, 4, 6, 8 or 16. This allows each screen to display an appropriate fraction of the overall image.
  • the control system can be divided into two functional parts: the master software which comprises the presentation authoring software, and the slave software, or player, which may reside locally or remotely.
  • the slave software is remote.
  • the master software allows the production to be authored as required, and the player allows these authored productions to be played back exactly as authored.
  • the master software is a totally-integrated software package which features a "point and click" graphical user interface, all-image-based authoring and file handling and a full on-line help system.
  • Presentations may be created from text alone, from text with photographic background (scanned from a supplied rostrum camera), or from videotape.
  • Each page of a presentation is created in the page layout editor which also features an image compositor for special video wall effect and layout.
  • a sophisticated text editing system allows multi-coloured text with or without special effects to be placed and moved over a photographic background.
  • the pages are sequenced in the sequence editor which allows the display time and special transaction effect to be set for each page.
  • Video may be incorporated accurately into a presentation frame via a VTR S9 controller, which is fully SMPTE time code compatible. Sequences may be edited with cut, copy, paste and insert functions, and finished products are automatically stored to disk. Completed presentations may be played directly from the master software via a preview option, or they may be data uplinked to a remote slave system via standard telephone lines using built-in uplink software.
  • the slave software or presentation player may be involved locally via the master software "preview" option, to play the current presentation; alternatively, it may be operated on a remote slave site system.
  • the software When operating as a remote site, the software automatically detects and answers a call for data uplink by the master system.
  • the new presentation is down linked automatically and stored to local storage. The system will then intelligently clear out old presentation data to prevent disk overflow, and will restart the presentation. This whole process is automatic, and requires no user intervention. Should the presentation be authored to use video tape, the remote site will play the tape frame accurately against the original master production.
  • control system Special features of this control system include the fact that both master and slave software will automatically reconfigure for PAL/NTSC display sizes.
  • video wall display modes can be authored as part of the presentation, allowing page by page display changes.
  • the system can work in both standard and video display resolutions. Uplink, video control and composition systems can be configured at the start up of the system.
  • the colour display mode is selectable, for example in the range 4,096-256,000 pixels, with eight colour text lockout.
  • the system allows digital video previewing to quarter-screen size.
  • External communications ports are provided for synchronization with other software modules, for example software modules intended for Superbowls.
  • the system software is intended to be fully multitasking.
  • the monitors may be fitted into a suitably adapted frame without their sleeves.
  • the front face of the module frame would support much of the weight of the monitors, and would support the bending moment of the monitors due to their centres of gravity being behind the front part of the module frame, to which they are attached.
  • the corner fixing lugs 6 then each have a recess as shown in Fig. 3, on the diagonal line of the tube, for receiving a clamping bolt located on the central horizontal axis of the module.
  • the frames of adjacent modules are preferably releasably connectable across the interfaces by bolts which can be accessed from the interior of just one of the modules.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

Module vidéo destiné à un mur d'écrans, comprenant un ensemble de plusieurs unités d'affichage vidéo dont les bords avant se touchent et se situent tous dans le même plan de manière à former un ensemble rectangulaire, et une enceinte commune en forme de boîte qui retient l'ensemble. L'image présentée sur les unités d'affichage peut être commutée entre divers modes et peut apparaître sous forme de plusieurs images identiques ou bien sous forme d'une seule image plus grande. Cette invention concerne également un tube à rayons cathodiques comprenant des oreilles de fixation d'angle qui sont spécialement conçues afin que leurs bords ne s'étendent pas au-delà des tangentes depuis les bords principaux de l'écran; ainsi qu'une gaine pour tube à rayons cathodiques qui se présente sous forme d'une boîte rigide à extrémités ouvertes comprenant des structures situées sur l'intérieur des coins qui se fixent sur les oreilles d'angle du tube à rayons cathodiques, les parois latérales de la boîte étant partiellement découpées au niveau des bords avant pour permettre aux bords des tubes à rayons cathodiques qu'elles supportent de se toucher.
PCT/GB1994/000125 1993-01-22 1994-01-21 Systeme d'affichage video WO1994017637A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU58639/94A AU5863994A (en) 1993-01-22 1994-01-21 Video display system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB939301279A GB9301279D0 (en) 1993-01-22 1993-01-22 Video display system and processor for video wall
GB9301279.7 1993-01-22
GB9313421A GB2274564A (en) 1993-01-22 1993-01-29 Video display system
GB9313421.1 1993-06-29

Publications (1)

Publication Number Publication Date
WO1994017637A1 true WO1994017637A1 (fr) 1994-08-04

Family

ID=26302332

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1994/000125 WO1994017637A1 (fr) 1993-01-22 1994-01-21 Systeme d'affichage video

Country Status (2)

Country Link
AU (1) AU5863994A (fr)
WO (1) WO1994017637A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997031478A1 (fr) * 1996-02-22 1997-08-28 Gennady Ivanovich Judenich Installation d'affichage video
RU2139561C1 (ru) * 1997-08-01 1999-10-10 Коханов Владимир Анатольевич Информационная видеоустановка
US6296214B1 (en) * 1996-07-30 2001-10-02 Adf, Incorporated Video wall framing system
EP1380937A1 (fr) * 2002-07-10 2004-01-14 Eastman Kodak Company Système électronique de transmission de données dans des afficheurs en mosaique
WO2005091627A1 (fr) * 2004-03-24 2005-09-29 Philip Vafiadis Ensemble de surfaces audio visuelles
AU2005223289B2 (en) * 2004-03-24 2010-12-16 Vaf Research Pty Ltd Audio visual surface assembly
EP2404617A1 (fr) 2010-07-08 2012-01-11 Dario Maximilian Spera Support physique de fréquence pour le diagnostic, le traitement médical et l'amélioration humaine, zootechnique et agricole
WO2012057734A1 (fr) * 2010-10-25 2012-05-03 Hewlett-Packard Development Company, L.P. Système, appareil et procédé de support de mur vidéo tactile
US8644757B2 (en) 2008-12-04 2014-02-04 Nokia Corporation Method and system for creation and control of virtual rendering devices

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3135068A1 (de) * 1981-09-04 1983-03-24 Manfred Kage Institut für wissenschaftliche Fotografie, 7321 Schloß Weißenstein Fernsehbildroehrenanordnung
EP0331847A2 (fr) * 1988-03-08 1989-09-13 Pioneer Electronic Corporation Récepteur de télévision à projections multiples
FR2634921A1 (fr) * 1988-07-27 1990-02-02 Finance Christian Affichage sur ecran geant
EP0376332A2 (fr) * 1988-12-29 1990-07-04 Sony Corporation Dispositif d'affichage
GB2236447A (en) * 1989-09-05 1991-04-03 K C Tung TV wall structure
WO1991013518A1 (fr) * 1990-02-16 1991-09-05 Madimelia (Overseas) Limited Systeme d'affichage
GB2248005A (en) * 1990-09-03 1992-03-18 Pioneer Electronic Corp Multiple screen image projection system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3135068A1 (de) * 1981-09-04 1983-03-24 Manfred Kage Institut für wissenschaftliche Fotografie, 7321 Schloß Weißenstein Fernsehbildroehrenanordnung
EP0331847A2 (fr) * 1988-03-08 1989-09-13 Pioneer Electronic Corporation Récepteur de télévision à projections multiples
FR2634921A1 (fr) * 1988-07-27 1990-02-02 Finance Christian Affichage sur ecran geant
EP0376332A2 (fr) * 1988-12-29 1990-07-04 Sony Corporation Dispositif d'affichage
GB2236447A (en) * 1989-09-05 1991-04-03 K C Tung TV wall structure
WO1991013518A1 (fr) * 1990-02-16 1991-09-05 Madimelia (Overseas) Limited Systeme d'affichage
GB2248005A (en) * 1990-09-03 1992-03-18 Pioneer Electronic Corp Multiple screen image projection system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997031478A1 (fr) * 1996-02-22 1997-08-28 Gennady Ivanovich Judenich Installation d'affichage video
US6296214B1 (en) * 1996-07-30 2001-10-02 Adf, Incorporated Video wall framing system
RU2139561C1 (ru) * 1997-08-01 1999-10-10 Коханов Владимир Анатольевич Информационная видеоустановка
EP1380937A1 (fr) * 2002-07-10 2004-01-14 Eastman Kodak Company Système électronique de transmission de données dans des afficheurs en mosaique
US6999045B2 (en) 2002-07-10 2006-02-14 Eastman Kodak Company Electronic system for tiled displays
WO2005091627A1 (fr) * 2004-03-24 2005-09-29 Philip Vafiadis Ensemble de surfaces audio visuelles
AU2005223289B2 (en) * 2004-03-24 2010-12-16 Vaf Research Pty Ltd Audio visual surface assembly
US8644757B2 (en) 2008-12-04 2014-02-04 Nokia Corporation Method and system for creation and control of virtual rendering devices
EP2404617A1 (fr) 2010-07-08 2012-01-11 Dario Maximilian Spera Support physique de fréquence pour le diagnostic, le traitement médical et l'amélioration humaine, zootechnique et agricole
WO2012057734A1 (fr) * 2010-10-25 2012-05-03 Hewlett-Packard Development Company, L.P. Système, appareil et procédé de support de mur vidéo tactile
US9148614B2 (en) 2010-10-25 2015-09-29 Hewlett-Packard Development Company, L.P. Touch-enabled video wall support system, apparatus, and method

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