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Eric,
Experimentation with parallel connections and your eyes would give you the best choice, it will
reveal how good is the DVD player 480 deinterlacing vs. how good is the Ruby, regardless of the
theory.
You did not mention what is your DVD player, level of quality, etc.
In general it is better to let the DVD player do the deinterlacing and 3:2 pull-down for film
material within its internal circuits and put 480p out. And most importantly " doing it in the
digital domain" before it does the D/A conversion to send the 480p signal out via component analog
(as you said your connection was).
Your Ruby should be expected to do a great job in 1080p scaling and deinterlacing from any
resolution; would it do a better job receiving directly 480i (to upconvert to 1080p) than using the
two step alternative approach of 480i to 480p in the DVD player, and later 480p to 1080p within the
Ruby? Perhaps, I did not have the luxury to test the Ruby yet but could be, again your eyes should
tell.
Another issue here is that you let the component analog from the DVD be transcoded by the Pioneer to
feed HDMI to the Ruby, that step might be done better by a good scaler or the Ruby itself converting
the analog input to the digital format it needs for the video processing, I know that would
complicate the wiring, but perhaps you should also try feeding the analog directly to the Ruby as a
separate test of the circuitry quality of "all" the components you have.
Another ingredient in the middle of this is the quality of your wiring.
Other things to try are the possibility that a 1080i upconverting DVD player with HDMI outputs would
feed the Ruby perfectly (all in the digital domain), or a good quality video scaler doing 1080p
upconversion to just let the Ruby do the 1920x1080 grid mapping.
The art of deinterlacing and scaling is subjected to many variables and magic manufacturers use,
some shortcuts could ruin an otherwise great display. There is an excellent article on the WSR
about the subject (by Greg Rogers).
The Ruby just came out and we are starting to see the first feedback from owners about the testing
you are facing, I suggest you to go to the special subforum that opened on the AVS forum for just
the Ruby piece. Please return to the Tips with your findings, there is no substitute for facts and
actual experiences.
Best Regards,
Rodolfo La Maestra
-----Original Message-----
From: HDTV Magazine On Behalf Of
Eric Hyman
Sent: Wednesday, December 28, 2005 8:09 PM
To: HDTV Magazine
Subject: Re: hdtvmagazine_tips Digest #1272 Sony Ruby and DVD Player
Set-Up
----- HDTV Magazine Tips List -----
Should I feed the Sony Ruby a 480p signal from a progressive scan DVD player
or 480i and let the Ruby do the scaling? In either case, the signal will go
through HDMI from the Pioneer VSX-74TX, which transcodes, but does not scale
the signal from the DVD player's component video out?
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