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correct use of the term videowall Tags: Reverted Visual edit |
Trivialist (talk | contribs) Undid revision 993254481 by 2A00:23C5:DB83:9501:641A:1A59:177F:B7CD (talk) rv, good faith but seems a bit promotional |
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[[File:Channel 1 Israel DSC0193.jpg|thumb|A video wall in television studio]]
A '''video wall''' is a special [[multi-monitor]] setup that consists of multiple [[computer monitor]]s, [[video projector]]s, or [[television set]]s tiled together contiguously or overlapped in order to form one large screen. Typical display technologies include [[Liquid crystal display|LCD panels]], [[LED displays|Direct View LED arrays]], blended projection screens, [[Laser-powered phosphor display|Laser Phosphor Displays]], and [[Rear-projection television|rear projection cubes]]. [[Jumbotron]] technology was also previously used. [[Diamond Vision]] was historically similar to Jumbotron in that they both used [[cathode-ray tube]] (CRT) technology, but with slight differences between the two. Early Diamond vision displays used separate flood gun CRTs, one per subpixel. Later Diamond vision displays and all Jumbotrons used field-replaceable modules containing several flood gun CRTs each, one per subpixel, that had common connections shared across all CRTs in a module; the module was connected through a single weather-sealed connector.<ref>https://www.mitsubishielectric.com/sites/news/2018/pdf/0308.pdf</ref><ref>https://site.ieee.org/sb-uol/mitsubishis-large-scale-display-changed-the-way-we-watch-live-sports/</ref><ref>http://lampes-et-tubes.info/cd/cd165.php?l=e</ref><ref>http://lampes-et-tubes.info/cd/cd083.php?l=e</ref><ref>http://lampes-et-tubes.info/cd/cd173.php?l=e</ref><ref>https://books.google.com.pa/books?id=e35kJYAlyCgC&pg=PA242&lpg=PA242&dq=flood+beam+crt+mitsubishi&source=bl&ots=f0nVNSrSOe&sig=ACfU3U1GLqrtllqoVveEsQO7O1rSUg7usA&hl=en&sa=X&ved=2ahUKEwjq6tDR0qvrAhVKmVkKHXjSDfoQ6AEwFXoECAgQAQ#v=onepage&q=flood%20beam%20crt%20mitsubishi&f=false</ref><ref>https://books.google.com.pa/books?id=DSHSqWQXm3oC&pg=PA396&lpg=PA396&dq=flood+beam+crt+mitsubishi&source=bl&ots=o1QUIRFI3N&sig=ACfU3U3HISpQ9BuiLu6gD7HA9G45OK2_nA&hl=en&sa=X&ved=2ahUKEwjq6tDR0qvrAhVKmVkKHXjSDfoQ6AEwG3oECAcQAQ#v=onepage&q=flood%20beam%20crt%20mitsubishi&f=false</ref><ref>https://www.industrialalchemy.org/articleview.php?item=947</ref>
Screens specifically designed for use in video walls usually have narrow [[wikt:bezel#Noun|bezels]] in order to minimize the gap between active display areas, and are built with long-term serviceability in mind.<ref name=pixell>{{Cite web |url=http://www.pixell.com/what_is_a_vw.htm |title=What is a Video Wall? |accessdate=2011-01-31}}</ref> Such screens often contain the hardware necessary to stack similar screens together, along with connections to [[Daisy chain (electrical engineering)|daisy chain]] power, video, and command signals between screens.<ref>{{Cite web |url=http://www.pixell.com/margay_ii.htm |title=Clarity Margay II Specifications |accessdate=2011-01-31}}</ref> A command signal may, for example, power all screens in the video wall on or off, or calibrate the brightness of a single screen after bulb replacement (in Projection-based screens).
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Simple video walls can be driven from [[multi-monitor]] video cards, however more complex arrangements may require specialized video processors, specifically designed to manage and drive large video walls.<ref name=pixell/> Software-based video wall technology that uses ordinary PCs, displays and networking equipment can also be used for video wall deployments.<ref name=informationweek>{{Cite web |url=http://www.informationweek.com/news/hardware/peripherals/showArticle.jhtml?articleID=212902015 |title=Startup of the Week: Hiperwall }}</ref>
The largest video wall as of 2013 is located at the backstretch of the [[Charlotte Motor Speedway]] motorsport track. Developed by [[Panasonic]], it measures 200 by 80 feet (61 by 24 m) and uses LED technology. The [[Texas Motor Speedway]] will install in 2014 an even larger screen, measuring 218 by 125 feet (66 by 38 m).<ref>[http://motorsportstalk.nbcsports.com/2013/09/23/texas-giant-worlds-largest-hd-screen-coming-to-texas-motor-speedway/ World’s largest HD video board to be built at Texas Motor Speedway] - NBC Sports, 23 September 2013</ref>
Video walls are not limited to a single purpose but are now being used in dozens of different applications.
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