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That Big Projector In Your Living Room
by Erika Mathie
http://www.umcprojector.com
Does it come as a surprise to you that we no longer buy
a television set? Today we buy a monitor and a high
definition screen. The monitor takes in the signal
from an antenna, a satellite, cable hook-up or your VCR
or DVD player and projects the image onto the screen.
The rear projector is coupled with a television monitor that
interprets the signals that come from satellite, cable or
your DVD or VCR player. The rear projection unit puts the
image on the screen from the back of the television set.
This advanced technology uses a combination of lights and
mirrors to control the image. The mirrors switch on and off
at incredible speeds as the projection unit translates the
signals into a moving picture. The higher quality rear
projection units give a clearer picture.
The television monitors have controls that allow you to
change the image that appears on the screen. Some
of the options are wide screen view for movies, full screen
for satellite or cable signals, zoom mode or full zoom.
The projected image in a big screen television is usually
LCD or plasma. LCD refers to liquid crystal display.
Plasma is substance that makes the screen look most
realistic. The life span of these screens differs greatly.
Even though most LCD may last up to 20 years, the crystals
start to break down after 10 years. Plasma in contrast may
last up to 14 years and this technology has a half-life of
around 7 years before quality starts to deteriorate. The
flatter screens and streamline models have the latest
technology and best reception.
The new high definition (HD) technology uses complex signal
methods. Some of these newer technologies are DLT (Digital
Light Processing), PureDrive, DNX by Pixelworks, DCDi by
Faroudja, and ACEII. The television monitor translates
these signals into dots or pixels and lines on the screen.
The language in advertising HD and plasma televisions can
really look intimidating, especially when you read about
resolution. What do those numbers really mean? Resolution
is a term often used with the quality of a television
screen. First, it lets you know how many dots (pixels) per
inch can be crammed into each line. Next, resolution uses a
number to lets you know how many lines can fit down the
screen. The more common screen resolutions on big screen
monitors are 1280 x 768 and 1366 x 768.
Another option in the new television world is that a big
screen unit can either show high definition color or keep
up with fast action. The projector itself is programmed in
one mode or the other. So when you select a projector
television, keep in mind to ask whether it is preferred for
movies (color) or watching sports (action).
With all the competition in the high definition and big
screen television markets, watch your local electronics
outlet for promotional sales on big screen units.
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