Question about my 2005 Sony SXRD Television

[BKSinAZ]

I am not sure how to articulate this question, but I will try...

I have the 2005 50 inch Sony SXRD. I understand that this tv does not do true 1080p (1080p at 60 fames per second) and it takes a signal and de-interlaces it to 1080i and then it upscales it to 1080p/30 (1080p at 30 frames per second)

My question is what if the source (my Denon DVD-2930ci DVD player) puts out true 1080p/60 fps? Does the tv still takes that signal and de-interlaces it to 1080i and then it upscales it to 1080p/30 or will I get true 1080p through my SXRD? Not sure if I asked the question correctly, but will my television be any sharper with a true 1080p source or will I see no difference at all?

Second question is what are the VISUAL differences between 720p and 1080i? Which is better? What are the visual differences between 1080i and 1080p?

[edtyct]

Your Sony will not accept 1080p, but it deinterlaces 1080i/60 to 1080p/30. It should refuse DVDs upscaled to 1080p from the Denon player, but it will deinterlace DVDs upscaled to 1080i to 1080p. The advantage of 1080p is avoidance of the serial artifacts associated with interlaced sources: 1080i, for example, reduces to two 540 fields shown 1/60 second apart, whereas 1080p displays all at once. Likewise 480i reduces to two successive fields of 240, whereas 480p displays all at once. The difference between 720p and 1080i centers around the problems associated with interlaced video as well. Because 1080i comprises two fields shown in rapid succession, it tends not to maintain the inegrity of motion as well as 720p, which does not break it up. The difference is usually not that big a deal to most people.

Now that true 1080p sources are here, or just around the corner, the ability to accept them has acquired a little more importance, at least theoretically. But the 1080p of Samsung's Blu-ray deck has absolutely no advantage over Toshiba's HD-DVD deck on a 1080p display, even if it won't accept 1080p through its input, since the display will deinterlace the 1080i signal to the same 1080p that the player would have sent, assuming that it's working correctly.

[BKSinAZ]

Thanks for the reply...One follow up question please.

On my Sony SXRD, I understand that it will not accept or do true 1080p. So, is it better for me to set my Denon DVD settings to 780p or 1080i? I am still confused which is better to watch movies in? Keep in mind that my dvd player has true 1080p output.

One other follow up question please....I used to have the Denon dvd-2910 dvd player and from what I understand, it did not put out 1080p. I just got the Denon dvd-2930ci which outputs true 1080p. Should that make a difference on my Sony SXRD? Should I see a improvement because the new dvd player puts out true 1080p? Or is it irrelevent due to the fact that my tv can't do 1080p?

[BKSinAZ]

It should refuse DVDs upscaled to 1080p from the Denon player, but it will deinterlace DVDs upscaled to 1080i to 1080p.

What do you mean by REFUSE? I am not sure what you mean by dvds upscaled to 1080p. You mean some of my dvds in my collection will not function?

Forgive me for being a newbe.

[edtyct]

I'll give you the short answer, since I don't have the fortitude to go into much detail. I've been writing about upconversion a lot lately. All of your DVDs will display on your TV with their intended glory. Your TV's incapacity to accept 1080p through its input has nothing to do with its ability to show DVDs. In fact, it has little to do with anything these days. The resolution of standard DVDs is 480i. TVs like yours change the i, for interlaced, to p, for progressive because they are digital, progressive TVs. TVs like yours also must show this 480 content at their own native resolution, that is, the full pixel count of the screen--in your case, 1920 horizontal lines x 1080 vertical lines. Thus, they must upconvert 480 to 1080 (we typically refer only to the vertical resolution) in order to show the DVD at all.

DVD players can also upconvert their 480 DVDs to various resolutions to save TVs the trouble, generally to 720p or 1080i. Some DVD players, however, now can upconvert to 1080p. However, because your TV won't accept 1080p through an input, it must do the upconverting to 1080p by itself, regardless of the resolution that it's fed. Don't mistake any 480 DVDs upconverted by a player or a TV to a higher resolution as anything but 480 DVDs. True HD originates at 720p, 1080i, or 1080p; a DVD at 480 can never become true HD by upconversion.

[BKSinAZ]

You explained this very well. Thanks.

Follow up question about resolutions....please don't black list me :ihih:

I have a normal television channel that is broadcasted in HD. The television shows it being displayed as 720p, not 1080p. If I got a 1080p television, why is it not converting to 1080p instead of 720p. Also, the same question about the DVD's I play, the television shows them displayed as 1080i instead of 1080p, why?


I am wondering about my settings....

[edtyct]

If the TV kept telling you its own native resolution whenever any incoming signal arrived, it wouldn't be terribly interesting. Instead, it intercepts the signal to tell you the resolution before the TV processes it. I'm willing to bet that your 720p channel is ESPN.

[BKSinAZ]

If the TV kept telling you its own native resolution whenever any incoming signal arrived, it wouldn't be terribly interesting. Instead, it intercepts the signal to tell you the resolution before the TV processes it. I'm willing to bet that your 720p channel is ESPN.

I am not understanding the answer. If I got a 1080p television, why is it displaying in every mode other than 1080p in television and dvd mode? That channel I was speaking of was channel 9, a local channel here in Tucson.

What are the chances that I might speak with you over the phone? It would be on my dime and I promise to only take a couple of minutes. I find it very difficult to articulate my questions via a forum. If I could talk over the phone, send # to BKSinAZ@yahoo.com
Dont post here for everyone to see.

[AVMASTER]

attention Edtyct;
could it be that BKSinAZ has his source connected via HDMI and thus his Sony displays only the native rez of that source?

[edtyct]

Yes, that's exactly it. The Sony is telling him the resolution of his various sources before the TV takes over and converts them to 1080p. I've spoken with him on the phone, and we cleared up some misconceptions.

[jimbo]

BKSinAZ,

You are about the only person I've seen post that you had the 2910 and now have the 2930! I have the 1930 and it isn't very good. I tried the 2910 a while back and it was pretty good. Can you tell me how the 2930 compares in terms of picture quality to the 2910?

Thanks!!

[BKSinAZ]

BKSinAZ,

You are about the only person I've seen post that you had the 2910 and now have the 2930! I have the 1930 and it isn't very good. I tried the 2910 a while back and it was pretty good. Can you tell me how the 2930 compares in terms of picture quality to the 2910?

Thanks!!

I returned the 2930 without even opening the box and trying it. I was tempted by the 3930 and will be receiving it in about 4-6 weeks. I wish I can answer your question, but cant.