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A Peek Into the Near Future of Electronics Technology
How long do you think DVDs have around? 20 years? 10 years? Actually, they have only been around for about seven years, but it seems like they have been around much longer. Many of us can hardly remember life before DVDs. That can be attributed to...
Free Satellite TV -- Is It Really Free?
You've seen the online and offline ads -- "Free satellite TV!" "Get a 4-room Satellite TV System Free!" and "Satellite TV Dish and Receivers Absolutely Free!"
But is satellite TV really free?
The answer to that question is yes ... and no.
...
Honey, I Shrunk the Chip!
Let's get small, real small, and then we can go anywhere! No, I'm not advocating we shrink ourselves, but rather discussing dramatic changes coming now that computers can be tiny and inexpensive. Recent movement in conservative, and previously very...
In response to Bill Gates Letter -The Next Sea Change
In response to the Sea Change
Bill gates recently wrote an internal document to his
executives, titled "The Sea Change". This letter speaks of the
movement towards internet delivery of content, for Microsoft,
its software and numerous other...
Which is better, EDTV or HDTV?
With all the new digital formats out there, it is of little surprise that there exists considerable confusion about EDTV and HDTV. First of all, EDTV stands for Enhanced Definition Television, while HDTV stands for High Definition Television. TVs...
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How DLP Projectors Work?
DLP (Digital Light Processing) projectors can be attached with
computers, DVD players, VCR players, HDTV's and video games. It
comes in various models and with enhanced features. DLP
Projectors are also called as Multimedia projectors. In mid
1990's Texas Instruments developed Digital Light Processing. DLP
technology is based on DMD or Digital Micromirror Device. It is
a switch, which controls the intensity, and placement of
projected light via 4,80,000 mirrors. In a DLP-based display
there are unlimited colors. You can control the saturation and
clarity to make bright video as clear as you want. The DMD is
coordinated with a graphic signal, a light source and a
projection lens. The micromirrors of DLP are fixed on a panel of
small pivots, which enable them to slant either way. If it
slants towards (on) light source it creates bright pixels on the
screen and when it slants the other way
(off) it creates darker
pixels. When the bit-stream image code enters the semiconductor,
the semi conductor directs the switch to on or off. If the
switch remains on more times than off, it reflects a light gray
pixel. Otherwise it reflects darker gray pixel. In DLP systems
white light is passed through a color wheel and it runs to the
surface of the DMD panel. The color wheel converts the white
light into red, green and blue. From these three colors a DMD
chip can create 16.7 million colors. So a 3-DMD chip DLP system
can create a mammoth 35 trillion colors. Then our eyes
understand these colors and see an image.
About the author:
Paul has been providing answers to lots of queries through his
website on a wide variety of subjects ranging from satellite
phones to acne. To learn more visit
http://www.askaquery.com
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