A jumbotron, sometimes referred to as jumbovision, is a video display using large-screen television technology
). The original technology was developed in the early 1980s by Mitsubishi Electric
, which coined JumboTron as a brand name in 1985.
Mitsubishi Electric sold their version of the technology as Diamond Vision
. It is typically used in sports stadium
s and concert venue
s to show close up shots of an event or even other sporting events occurring simultaneously,
as well as outdoor public places (such as Times Square
, for example).
History and development
The jumbotron was invented in Japan during the early 1980s, but there is a dispute between two rival Japanese companies, Mitsubishi Electric
, over its invention.
In 1980, Mitsubishi introduced the first large-scale video board,
the Diamond Vision
, which was a large screen using cathode-ray tube
technology similar to traditional tube television
They demonstrated the technology at the 1980 Major League Baseball All-Star Game
in Dodger Stadium
, Los Angeles
In 1985, the term "JumboTron" was coined by Sony
for its large-scale video board.
The JumboTron was the brand name for the large-scale video boards originally manufactured by Sony, and is recognized as one of the largest non-projection video displays ever manufactured. Sony creative director Yasuo Kuroki, who previously helped create the Walkman
, is credited with the development of the JumboTron.
It was introduced at the Expo '85
held in May 1985 at Tsukuba, Ibaraki
. It had a display resolution
of 450,000 pixels
, using a new proprietary Sony technology called the Trini-lite.
It was a microprocessor
-based light bulb developed by one of Kuroki's colleagues, chief Betamax
engineer Yuji Watanabe. Trini-lite technology allowed screen clarity and computer
control, laying the foundation for the first Sony Jumbotrons.
While the JumboTron and similar large-screen displays are physically large, they ranged from low to medium display resolutions. While the original Sony JumboTron in 1985 had a 450,000-pixel resolution, comparable to standard-definition television
s of that era,
certain later models had lower resolutions. The JumboTron at the now-demolished Tampa Stadium
, measured 30 ft (9 m) diagonally with a resolution of only 240x192 pixels, below VHS
resolution. Screen size since then varies depending on the venue. The display introduced in 1985 was 40 meters wide by 25 meters tall. Newer, LED-based large screens
have an order of magnitude greater than the early JumboTron resolution at a fraction of the cost. For example, the much publicized center-hung video board in the Dallas Cowboys
' AT&T Stadium
is 72 feet tall and 160 feet wide (22 m x 49 m), displaying HDTV at 1920 x 1080 resolution, 45 times more pixels.
The largest JumboTron in use was located at SkyDome (now Rogers Centre
) in Toronto
, and measured 10 m tall by 33.5 m wide (33 ft × 110 ft) at a cost of US$
17 million. By comparison, a similar-sized LED system sold today would cost around $3 million. The Rogers Centre JumboTron was replaced in 2005 by a Daktronics
ProStar as part of a stadium revitalization project.
Originally, JumboTrons solely displayed the scores of the games via numerical displays. This then evolved into instant replays being showcased for the benefit of fans within the stadiums or arena, and in modern day, social media is heavily integrated with fans being urged to post on various social media platforms to then have their content appear on the JumboTron screen.
Specifications of production and design
Originally, the JumboTron was not an LED display
display), since blue LED
s were unavailable at the time, and the only green LEDs available were of the traditional yellow-green variety, which were unsuitable for an RGB
display. Each display consisted of multiple modules composed of 16 or more small flood-beam CRTs (cathode ray tube
s), each of which included from 2 to 16 pixels composed of red, green, and blue phosphors. Sony displayed one of the earliest versions at the Expo '85 World's Fair
Eventually, JumboTron systems adopted LED technology as blue and pure green LEDs were developed. LED-based systems have about ten times the lifespan of CRT-based systems, a key reason for the change.
Although ''JumboTron'' is a registered trademark
owned by the Sony Corporation, Sony stopped manufacturing the devices under that name in 2001 and the word ''jumbotron'' has since become a genericized trademark
[ManVentions: From Cruise Control to Cordless Drills - Inventions Men Can't Live Without - Bobby Mercer](_blank)
;Displays similar to the JumboTron include:
* Barco LED Screen
* D3 LED
's Dynamic Digital Displays
* Mitsubishi Electric Diamond Vision
Category:Vacuum tube displays