data projector


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data projector

A device that projects computer output onto a white or silver fabric screen that is wall, ceiling or tripod mounted. It is widely used in classrooms and auditoriums for instruction and slide presentations. For projectors designed primarily to display movies, see front-projection TV.

A data projector has a VGA input for resolutions such as 1024x768, 1280x1024 and higher. Most units also have HDMI inputs for Blu-ray/DVD players, cable boxes and other movie sources. Older projectors support the analog TV interfaces (composite, component and S-video).

Increasingly Smaller and Lighter
In the 1980s, the first data projectors weighed more than 40 pounds, using a single cathode ray tube (CRT) to project a monochrome image. When color units came out, they weighed even more because of their three CRTs (red, green and blue). CRT projection systems have given way to smaller, more convenient technologies, although they still offer high quality.

In the 1990s, projectors became transparent LCD panels, but although significantly lighter than CRTs, they required an overhead projector for illumination (see LCD panel). After the turn of the century, stand-alone projectors shrank to a pound or two (see pocket projector), and within a few years to only a few ounces (see microprojector). See extended desktop mode.


The Good Old Days
Starting in 1980, Alan Freedman, author of this encyclopedia, lugged a monochrome data projector to the computer literacy classes he taught to non-technical managers. Projector, computer and rolling cases weighed over 100 pounds.







Twenty Years Later
In 2000, using Texas Instrument's DLP technology, Compaq introduced the four-pound MP1400, one of the first lightweight data projectors. (Image courtesy of Compaq Computer Corporation.)







Another Decade Later
In 2012, ViewSonic introduced its Pico projector, weighing less than a pound. (Image courtesy of ViewSonic Corporation, www.viewsonic.com)
References in periodicals archive ?
Teachers can sign up to use the lab and show a video or DVD and use cable stations with a video data projector for lessons, such as a writing prompt.
The single-lens video and data projector utilizes three active-matrix LCD panels and a powerful 575-watt, metal-halide lamp.
Samsung's new LED data projector leverages PhlatLight PT-120 LEDs to slash total cost of ownership, deliver unprecedented color quality and reliability
Another hybrid product is the MEDIASHOW Color Data Projector from Sayett Technology.
LAS VEGAS -- Vivitek Corporation, a leading manufacturer of environmentally innovative visual display and presentation products, today introduces the company's first native 1080p data projector.
a subsidiary of Samsung Electronics Corporation, today announced the launch of the first LED data projector with 1,000 ANSI lumens (max).
today announced that they, along with Coretronic and Texas Instruments, are demonstrating a new DLP-based data projector illuminated by high-performance PhlatLight[R] LEDs from the company.
A side pull-out shelf secures a data projector, the top shelf can hold a document camera, and the standing-height pull-out shelf is ideal for use with a laptop.
Samsung Electronics America, a subsidiary of Samsung Electronics Corporation, today announced the release of its family of data projector products.
Limited Tenders are invited for Supply Of Data Projector
Mitsubishi Digital Electronics America's Presentation Products Division, known for award-winning, high-quality, high-definition presentation and display products, today announced its new XD211U data projector.