Wednesday, April 21, 2010

DLP Protection TV

DLP protection TV was introduced in 1996 by Texas Instruments. DLP stands for digital light processing. This is the first technology that can deliver a television picture completely digitally. Huh? Doesn�t digital satellite and digital cable TV systems do that? No, they don�t. Both digital satellite and digital cable systems have to convert the signal into an analog waveform at some point in the transmission process. DLP uses digital micro mirror devices (DMDs) to literally reflect the digital information as a series of red, blue and green light pulses.

Each frame of a movies is first separated into it red, green and blue components. Then the color map is digitized into samples for each color. Each DMD has a 1280 by 780 matrix (1280 mirrors wide and 780 mirrors high) of individual micro mirrors. The digitized color is sent to a backlit color wheel and the mirrors reflect the correct amount of the proper color based on how much color is written into the color stream of the digital video signal for each frame. Or to put that in plain English, a dlp protection TV reflects each pixel of a frame of a movie off one of the 921,600 micro mirrors in the DMD matrix.

It is the magnificent optical equipment present in the human eye and brain that actually read the digitized color image projected by dlp protection TV. The signal is digital, meaning distinct tiles of individual colors, when it is put on the viewing screen. Our brains do the digital to analog conversion so we can see a perfectly clear integrated picture. Compared to the human brain, the fastest supercomputer is a snail chasing a cheetah.

The next step in dlp technology for the dlp protection TV is to figure out a way to send the entire signally optically so the colored light is never turned into an electrical signal. Total optical transmission would result in pictures of such intense color and visual acuity that it will make high definition look as lame as analog TV looks when compared to digital. Totally optical dlp protection TV is out there on the horizon just waiting to be invented.

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