On Fri, 9 May 2008 17:28:23 +0100 The dog from that film you saw
<dsb@[EMAIL PROTECTED]
> wrote:
| "Richard Cranium" <dufus@[EMAIL PROTECTED]
> wrote in message
| news:482389ca.984401156@[EMAIL PROTECTED]
|>I have a Sony XBR LCD set and a non-upconverting DVD player. Is the
|> TV automatically upconverting the 480p (I can select progressive on
|> the DVD player) to something better?
|
|
| the tv is upconverting it to the same resolution as your tv set.
| if it didnt, the picture would sit in a small square in the middle of
your
| tv with a sea of black all around.
|
| as to if it's 'better', it still only has the same level of detail that
it
| started out with - you can't magic extra picture info out of thin air -
| it's just guessing.
It might be less about detail and more about artifacts. By decoding the
DCT
blocks in the MPEG stream to an 8x8 array of pixels, you would have
certain
artifacts that are a single pixel in size. Then the TV would blow those
artifacts up to an effective 2.25 pixel size, and probably affect 3
pixels.
The artifacts would be worse to look at. But decoding the DC directly to
an 18x18 array of pixels, the artifacts will still only be 1 pixel in size
and thus not magnified by the TV doing it. You get a smoother picture.
I do not know if the upconverting DVD players do it this way, but that is
a
way to do it.
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