Thomson 37 tuuman xga-plasma

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Can you explain the differences between the 852 X 480 and 1024 x 1024
resolution. I am trying to decide if it's worth spending the extra
$1500 to get a higher resolution TV. Thank You. Lee, San Diego, CA

Pixel resolution with regard to plasma monitors is a tricky issue.
Basically, all 42" plasma tv's have a built in converter/scalar to
take care of the interpolation issue with matching up the incoming
signal with the native pixel resolution. A 42" plasma monitor with
1024X1024 will not display a 1080i signal straight out. In order to
show a true 1080I HDTV signal a 42" 16:9 plasma display monitor must
have a native pixel resolution of 1920X1080. None currently have this
resolution. All current 42" plasma monitors must do a certain amount
of interpolating through the video processing chip/converter/scalar.

Because the 1024X1024 monitor seems closer in native pixel resolution
to the 1080I signal than an 853X480 monitor it stands to reason that
it would show the 1080i signal at a higher resolution - closer to the
1024 than the 853. However, the 1024X1024 monitor uses an interlace
scan to see every other line while the 853X480 monitor uses
progressive scanning. Using a comparison at a 60hz refresh rate, what
you will actually see vertically is 512 lines on the 1024X1024 monitor
compared with 480 vertical lines on the 853X480 monitor. Not much
difference.

While the 1024X1024 (XGA resolution) plasma monitor still appears to
have the edge in resolution we have to remember that the pixels are
rectangles rather than square. This enables the monitor to produce the
images for the 16:9 widescreen monitor. This means that the 1024 X1024
monitor has to do more interpolating on the horizontally stretched
pixel, which can cause some softening. There is just a lot of severe
scaling to be done there. The 853X480 monitor, having square pixels,
will have an easier time with the horizontal conversion.

The 1024X1024 monitor can end up softening the image more due to the
more severe horizontal filtering. It can depend upon the
scalar/converter of the monitor as to which views the best.

This is where the difference between reasoning and true to life
experience gets a little hairy. Contrast, brightness, and black levels
come in to play with video images. What the eye picks up may be a much
better picture on the 853X480 monitor because the converter/scalar
does a better job of "blending" (through progressive scanning) the
color information in such a way as to cause a crisper image. Contrast
will necessarily translate into a better picture image given the
effectiveness of the scalar/converter, though at the same time the
1024X1024 monitor may show a bit better depth/ three dimensionalities.

Since computer signals are progressive the 1024X1024 monitor will
convert the signal very well to interlaced and provide a good
resolution vertically. Obviously an XGA resolution will favor the
1024X1024 monitory because of the similarity in signal and pixel.
Still image graphics for instance would look better on the 1024X1024
than on an 853X480 monitor because the refresh rate does not come into
play. The progressive scanning 853X480 may look better using a
computer with fast motion imaging, but generally the 1024X1024 monitor
should display most computer graphic presentation materials better. A
normal VGA resolution of 853X480 will match up nicely with the 853X480
monitor.

The 50" plasma monitors display somewhat different pixel resolutions.
Native pixel resolutions of 1280X768 or 1365X768 are shown. These
plasma monitors will use progressive scanning to show the best
possible picture. An incoming 1080i signal will be cross-converted to
768P (as opposed to down-converted with an 853X480 widescreen
monitor). An incoming 720P signal will be upconverted to 768P.
Therefore, the viewer will get a full and true HDTV picture.