HDTV resolution part 2

Started by AtomShop Dec 18, 2005 2 posts
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#1
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Thanks for the tip, Rodolfo. Let me ask you this, now. I recently looked at
a Panasonic 42" plasma which had a very good picture. Around the corner a
50" Hitachi was on display, also having a great picure. . (The store
dispalys use a satellite feed for their program source.) The Panasonic's
native res is 1024 x 768. (That's typical PC 4 x 3 in my book.) The Hitachi
is a 1024 x 1024 which uses a "VirtualHD 1080p II video processor to produce
a "1080i High Definition Display". WHAT? In my view neither one of these
sets can be TRUE high def. Enhanced maybe? We're LOSING a few pixels here
the way I see it. But if I look at a Samsung (among others) that has a
native 1366 x 768 res, we then have the real thing. BUT, now there's a few
EXTRA pixels thrown in. So what I'm wondering, which display produces the
most accurate image on a technical level? How much internal signal
processing is going on to produce the final image?

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#2
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Atom,

The Hitachi 1080p processing actually ends up downscaled to fit the grid of the lower pixel count on
the plasma, regardless how good that processing could be you will never see more than the pixel grid
but if the image that fed the grid has been perfected it could make a difference with a plasma with
similar resolution (that does not use 1080p processing).

A plasma that provides 1366 horizontal pixels than just 1024 obviously provides 35% more resolution
for original pixels on an image.

Further back in history, Hitachi introduced a couple of years ago the Alis processing (page 91 of
the CES 2003 report, free at the mag site):

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Hitachi Plasma ALIS technology (used by 42