Posted by willbill on 01/24/06 08:37

Jack Dotson wrote:
> "Marty" <this.address@is.invalid> wrote in message
> news:c2uat19ano1lj0rui9kvrshr0tb8p29420@4ax.com...
>
>>Somewhere around Mon, 23 Jan 2006 15:10:29 -0600, while reading
>>rec.video.dvd.players, I think I thought I saw this post from willbill
>><trek@worldwide.net>:
>>
>>
>>>Jack Dotson wrote:
>>>
>>>
>>>><manitou910@rogers.com> wrote
>>>
>>><snip>
>>>
>>>>>In the meantime, a decent HDTV display is well worth
>>>>>the price if you have a progressive scan DVD player.
>>>
>>>
>>>>Why a progressive scan? This is something I've been
>>>>trying to figure out.
>>>
>>>
>>>me too!
>>>
>>>
>>>
>>>>I've read regardless of the format input to my Hitachi HDTV,
>>>>it converts it to 720p, it's max resolution.
>>>>
>>>>I have a progressive scan DVDP (Sony DVP NS999ES), but I actually
>>>>get better results when I feed my set 480i vice 480p.
>>>>
>>>>Because of this I was also curious if the upconverting DVDP
>>>>would be worth while.
>>>
>>>
>>>is an "upconverting DVDP" a DVD Player?
>>>
>>>if yes, are they hard to find? how much
>>>more do they cost than a normal DVD player?
>>>
>>>
>>>
>>>>If I understand correctly they upconvert 480i/p to 720p or 1080i.
>>>>Since the set does this too, what good are these for HDTV's?
>>>>
>>>>What am I missing?
>>>
>>>
>>>maybe the answer is simple? but so far,
>>>i think the answer is buried somewhere in
>>>the complex subject of video/TV interlacing,
>>>and afaik you need to start there
>>>
>>>even if the answer re a progessive scan DVD
>>>player is simple, you're likely going to need
>>>some background on interlacing to understand it.
>>>see: http://neuron2.net/LVG/default.htm
>>>
>>>also, you refer to your HD TV's 720p
>>>capability (above)
>>>
>>>afaik, DVD players only send out 480i
>>>
>>
>>Yes, but to play it on an HDTV, you need to upconvert it. You can do that
>>either at the DVD player, or at the TV. Now, if you normally connect the
>>DVD player to the TV via analog cables (component, S-video, etc), then you
>>are converting the digital signal to analog, then converting back to
>>digital
>>in the TV. A better way would be to leave it in the digital domain,
>>convert
>>it to HDTV digital, then send it to be used directly by the TV.
>>
>>--
>>Marty - public.forums (at) gmail (dot) com
>>"Those are my principles, and if you don't like them...
>>well, I have others." - Groucho Marx
>
>
> So if I had a digital HDMI or DVI connection to my TV from a 480i DVDP then
> it would be unconverted at the set and no real advantage to have a
> upconverting DVDP? Therefore, it's the digital connection that's more
> important.



the faq gives a nice answer on progressive scan DVD at:
http://www.dvddemystified.com/dvdfaq.html#1.40

bill

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