Jumbotron

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A jumbotron , sometimes referred to as a jumbo vision , is a video display using large format television technology. The original JumboTron was developed by Sony and is typically used in sports stadiums and concert halls to show close-ups of an event.

history

Originally made by Sony, the JumboTron is considered to be one of the largest non-projection video displays ever made. Sony Creative Director Yasuo Kuroki is responsible for developing the JumboTron.

The JumboTron and similar large screens are physically large, but often had a low image resolution . The JumboTron in the now demolished Tampa Stadium in Tampa , Florida, measured 9 m (30 ft) diagonally with a resolution of only 240 × 192 pixels below the VHS resolution. The screen size has since varied depending on the venue. Introduced in 1985, the display was 40 meters wide and 25 meters high. Newer, LED-based, large-screen displays are an order of magnitude larger than the early JumboTron resolution at a fraction of the cost. For example, the highly acclaimed center-slope video board at the Dallas Cowboys' AT&T Stadium is 72 feet high and 160 feet wide and shows HDTV with a resolution of 1920 × 1080, 45 times more pixels.

The largest JumboTron in use was in the SkyDome (now Rogers Center ) in Toronto , Ontario . It measured 10m * 33.5m and cost $ 17 million. In comparison, a similar size LED system sold today would cost around $ 3 million. The Rogers Center JumboTron was replaced by a Daktronics ProStar in 2005 as part of a stadium revitalization project.

Specifications of production and design

Originally, the JumboTron was not an LED (Light Emitting Diode) display as blue LEDs were not available at the time, and the only green LEDs available were the traditional yellow-green, which were unsuitable for an RGB display. Each display consisted of several modules made up of 16 or more small flood-beam CRTs (cathode ray tubes), each containing from 2 to 16 pixels of red, green and blue phosphors. Sony showed one of the earliest versions at Expo 85 in Tsukuba . Eventually, JumboTron systems adopted LED technology as blue and all-green LEDs were developed. LED-based systems last around ten times longer than CRT-based systems, a major reason for the change.

Generic brand

Although JumboTron is a registered trademark of Sony Corporation, Sony stopped manufacturing the devices under that name in 2001 and the word Jumbotron has now become a generated trademark.

See also

Web links