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Discussion in 'General TV Discussions Forum' started by ursinho, Jan 27, 2005.

  1. ursinho


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    I have a Samsung LE32A41B Lcd Tv 1366x768 res. connected via DVI to Samsung DVD Player HD935.

    I played Standard Dvd using the three DCDi Faroudja options working only on DVI connection.

    576p DVI VIDEO lights RED
    720p DVI VIDEO lights BLU
    1080i 60Hz DVI VIDEO lights GREEN

    Dvd image quality setting Faroudja to 1080i (Lcd Tv shows 1080i 60 Hz pressing "INFO" button about video/audio settings on remote control) looks slightly better then 720p.

    So is it possible when DVI VIDEO lights GREEN, Faroudja upscales to 1080i 60Hz and Lcd Tv downscale image to 1366 x 768?
    And this can explains why 1920 x 1080i 60Hz upscaled image looks better then 1280 x 720p 60Hz upscaled image showed on Samsung "HD Ready" Lcd Tv but not full HD (native 1920 x 1080i )?
  2. Stephen Neal

    Stephen Neal
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    Mar 29, 2003
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    I suspect that this could be explained by your TV having better 1080->768 than 720->768 scaling ? Scaling 768 to 720 is likely to be quite difficult to do well, as they are close together arithmetically, so will require quite cleve processing to do well. 1080 is an easier number to scale to 768, as it is more different?

    Also - no LCD TV that I have heard of can display 1920x1080i native - they are inherently progressive, so any 1080i signal will need to be de-interlaced to 1080p for display on a 1080 display. (Only CRT based displays are native interlaced - plus a few bizarre systems like Eidophor...)

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