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It is NOT hd as we think it is

Discussion in 'Projectors, Screens & Video Processors' started by frosty03, May 2, 2005.

  1. frosty03

    frosty03
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  2. hornydragon

    hornydragon
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    Well he has no proof to back that up and while in essence its true (they downscale to 720 or 768) its far more complex than throwing away 360 lines of data there are displays that "clip" in this way but normally no more than 100 lines 1080 to 1024 etc
     
  3. PANASONIC MAN

    PANASONIC MAN
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    if you want atrue hd projector ot tv, you're talking mega bucks, like $25000.

    i have, however found a sony qualia 46" lcd tv at full high def its called the KDX-46Q005.

    or you could buy samsungs 105" plasma.

    hmmmmmmm...

    tempting!!
     
  4. Maff et1

    Maff et1
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    Not quite. There are two HD resolutions - 1280x720 (progressive) and 1920x1080 (interlaced). All except the most expensive displays are 720. They must scale 1080 signals down. The blog suggests that they frequently do this by taking one interlaced 1080 frame (1920x540) and scalling that. If you feed the projector a 720 image then no scaling will be done, normally this will provide the best image quality.

    This link http://www.digitalspy.co.uk/article/ds19617.html suggests that Sky plan to use 720 for most content anyway.
     
  5. Gilbers

    Gilbers
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    The claim made in the article is not that the signal is downscaled from 1080i to 720p, but that half the lines in the signal are completely discarded, and the remainder are upscaled from 540i to 720p. If true, I'd guess that this would have a fairly serious effect on the picture quality!
     

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