best buy dvd player tv image
Swim
I am looking to buy a DVD player only (not blu-ray or DVD VCR combo).
But I have an older TV that is not HD.
I am seeing technical terms like progressive scan, upscaling, and upconverting in my search for the DVD player I would like.
I am convinced that progressive scan is the way to go.
But upscaling and upconverting are words that seem to be used interchangeably. When I try to define those words, I find that upscaling seems to refer to being able to connect the DVD player to my older TV and having the DVD player refine and upgrade the image on the tv screen.
Upconverting seems to refer to being able to do the same thing, but with an HDMI connection from DVD and tv set.
I don't have HDMI on my tv so upscaling would probably work for me.
But what I am looking for is a DVD player that features upscaling, upconverting, and progressive scan. So far, I can't find any such DVD players that feature all three.
Does anyone know more about this and/or where I can find such a DVD player? I would like all three so that when I get a HD tv set with HDMI, my DVD player will work for it using the HDMI connection rather than what it would have to use with my current tv set.
Thanks and I hope someone can help me understand more about this.
Answer
Upscaling/upconverting and progressive scan are all only useful on HDTVs. A player that has these features will still work fine on an older non-HD set, since the player only uses these features on the outputs for HD (HDMI and component). Non-HD sets don't use HDMI and component, instead they use S-video or composite (yellow).
What this means is that you don't need to go crazy looking for a player without these features, because they aren't used when the player is connected to an older standard-def TV. And if you *do* buy a player with these features, if you ever get a new TV, you can take advantage of them, instead of having to also get a new fancier DVD player.
Here's more background on what the features do:
Upscaling and upconverting are the same thing. They take the lower-res DVD image and stretch it to have the same resolution as HD. This can make the DVD picture look a little better on an HDTV, but it still won't look great, because missing detail that never got onto the DVD to begin with, can't be recreated. And on a standard-def (non-HD) TV, upscaling/upconverting aren't useful at all, because the original resolution of a DVD is already standard-def.
Progressive scan means that all the lines in the picture out output in order from top to bottom, which is how HDTV signals are usually formatted. On the other hand, older standard-def used what was called interlaced scan, where first all the odd-numbered lines were output top to bottom, followed by all the even-numbered lines. This enabled the image to appear to be updated twice as fast, but the side effect was a slightly noticeable vertical jitter, which you can still see on some standard-def TVs. Progressive scan conversion on a DVD player takes the original interlaced scan signal and converts it to progressive scan, which can result in smoother movement when viewed on an HDTV. But since standard-def TVs can't use progressive scan at all, it's not of any benefit for them.
Upscaling/upconverting and progressive scan are all only useful on HDTVs. A player that has these features will still work fine on an older non-HD set, since the player only uses these features on the outputs for HD (HDMI and component). Non-HD sets don't use HDMI and component, instead they use S-video or composite (yellow).
What this means is that you don't need to go crazy looking for a player without these features, because they aren't used when the player is connected to an older standard-def TV. And if you *do* buy a player with these features, if you ever get a new TV, you can take advantage of them, instead of having to also get a new fancier DVD player.
Here's more background on what the features do:
Upscaling and upconverting are the same thing. They take the lower-res DVD image and stretch it to have the same resolution as HD. This can make the DVD picture look a little better on an HDTV, but it still won't look great, because missing detail that never got onto the DVD to begin with, can't be recreated. And on a standard-def (non-HD) TV, upscaling/upconverting aren't useful at all, because the original resolution of a DVD is already standard-def.
Progressive scan means that all the lines in the picture out output in order from top to bottom, which is how HDTV signals are usually formatted. On the other hand, older standard-def used what was called interlaced scan, where first all the odd-numbered lines were output top to bottom, followed by all the even-numbered lines. This enabled the image to appear to be updated twice as fast, but the side effect was a slightly noticeable vertical jitter, which you can still see on some standard-def TVs. Progressive scan conversion on a DVD player takes the original interlaced scan signal and converts it to progressive scan, which can result in smoother movement when viewed on an HDTV. But since standard-def TVs can't use progressive scan at all, it's not of any benefit for them.
How do upscale conversion DVD players work?
beastman16
I'm thinking of buying a new DVD player for my TV and I was wondering how these work.
Answer
They use a mathematical aglortithm to try and work out what should be in the extra pixels. Generally the picture quality from an upscaling DVD player will only be better if the technology in the player is better at upscaling and de-interlacing than the processing chip in the flat panel as it has to upscale to fit the higher screen resolution anyway.
Cheaper panels just do this by filling in with like pixels, like zooming into a photo in photoshop hence you can get a blocky looking picture viewing a standard def source.
One of the better chips at doing this in DVD players is DCDi by Faroudja. Look for the DCDi logo on the DVD players literature.
For a techincal explantion see this URL:
http://www.gnss.com/tch_dcdi_overview.phtml
They use a mathematical aglortithm to try and work out what should be in the extra pixels. Generally the picture quality from an upscaling DVD player will only be better if the technology in the player is better at upscaling and de-interlacing than the processing chip in the flat panel as it has to upscale to fit the higher screen resolution anyway.
Cheaper panels just do this by filling in with like pixels, like zooming into a photo in photoshop hence you can get a blocky looking picture viewing a standard def source.
One of the better chips at doing this in DVD players is DCDi by Faroudja. Look for the DCDi logo on the DVD players literature.
For a techincal explantion see this URL:
http://www.gnss.com/tch_dcdi_overview.phtml
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