2007-01-01 03:47:39 · 6 answers · asked by paul m 1 in Consumer Electronics ➔ TVs
Digital Light Processing (DLP) is a technology used in projectors and video projectors. It was originally developed at Texas Instruments, in 1987 by Dr. Larry Hornbeck.
Modern applications include DLP rear-projection television, which competes against LCD and Plasma flat panel displays, and DLP front projectors (small standalone projection units).
In DLP projectors, the image is created by microscopically small mirrors laid out in a matrix on a semiconductor chip, known as a Digital Micromirror Device (DMD). Each mirror represents one pixel in the projected image. The number of mirrors corresponds to the resolution of the projected image. 800x600, 1024x768, 1280x720, and 1920x1080 (HDTV) matrices are some common DMD sizes. These mirrors can be repositioned rapidly to reflect light either through the lens or on to a heatsink (called a light dump in Barco terminology).
The rapid repositioning of the mirrors (essentially switching between 'on' and 'off') allows the DMD to vary the intensity of the light being reflected out through the lens, creating shades of grey in addition to white (mirror in 'on' position) and black (mirror in 'off' position).
2007-01-01 03:50:34 · answer #1 · answered by Johnny Q. 3 · 1⤊ 1⤋
A rear projection TV competes against flat panels and front projection projectors. They call it a rear projection TV because it's projecting from behind the screen, rather in front of it.
A rear projection TV is a TV that includes a projection system (LCD or DLP). It's bulky, heavy and has a limited viewing angle. Just like front projection, it has a light engine which includes a lens, color system and light source (a lamp). You get a large image in a small space. That is why these are more desirable than any alternate display solution. Typically, you will find rear projection TV's with screens larger than 60". Right now, LCD and plasmas get too expensive beyond 60".
When I say a limited viewing angle, I mean that if you stand in the center of the screen, the picture looks amazing. As you step away from the center, the image starts to become dimmer and unclear. Plasmas and LCD flat panels have nearly a 180 degree viewing angle. Rear projection TV's have much less than that. Maybe around 100 degrees.
2007-01-01 13:31:11 · answer #2 · answered by techman2000 6 · 0⤊ 0⤋
The anwser is in the name its just like a projector on a screen but the projector is at the back of the tv.
2007-01-01 16:57:59 · answer #3 · answered by Mark 4 · 0⤊ 0⤋
it's like a big screen tv where the project is internal and behind the screen. opposed to a projection tv where the project is external and in front of the screen.
2007-01-01 11:51:01 · answer #4 · answered by Wesley C 3 · 0⤊ 1⤋
isnt it just a big tv? like a crt monitor?
2007-01-01 11:58:13 · answer #5 · answered by draculasab05 1 · 0⤊ 2⤋
put it this way fella ,, it ain't slimline
2007-01-01 11:57:55 · answer #6 · answered by 株式会THE CITADEL 株式会 4 · 0⤊ 2⤋