I don't get HD
Shizelbs
Posts: 7,433
Okay, set me straight. I have yet to find a concise to the point and CLEAR explanation of HD and all the signals, formats, conversions, and fundamentals to it.
Here's what I have so far after talking to a salesman tonight:
All HD TVs are native to either 1080i or 720p. No TV can do both. So, whatever signal that comes into the TV gets converted to the native resolution and i or p. So basically, when you buy a TV, you need to choose if you want 1080i or 720p. Is this correct? Does the salesman know WTF he is talking about.
Point me in the right direction.
Here's what I have so far after talking to a salesman tonight:
All HD TVs are native to either 1080i or 720p. No TV can do both. So, whatever signal that comes into the TV gets converted to the native resolution and i or p. So basically, when you buy a TV, you need to choose if you want 1080i or 720p. Is this correct? Does the salesman know WTF he is talking about.
Point me in the right direction.
Post edited by Shizelbs on
Comments
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Different TV's have different native resolutions. A native resolution is what the TV ACTUALLY displays. Almost all plasmas/lcd/dlp only display 720p or 768p maximum (excluding the $10k+).
Hitachi CRT RPTV's display 1080i or 540p, you can toggle between them.
EDTV's display 480p natively.
Regards,
PolkThug -
My Sony RPTV does 480P, 720P and 1080i
I set my Zenith HDSAT 520 to Native and can watch it toggle as I flip. Fox used to be 480P but now it is 720P and I don't know of any stations that broadcast in 480P anymore.
HBomb***WAREMTAE*** -
Fixed pixel displays do 720p and CRT displays do 1080i.
Actually, any HD tv will display both, but each TV is going to have a native resolution.... -
So then the salesman, per usual, didn't know what he was talking about.
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Actually, your salesman wasn't that bad. Most will never tell a customer that their new lcd/dlp has to downconvert a 1080 signal to 720 or 768.
The 1080p's will be here by summer, they range in price from $5-13K. Or you can get the 71" LG plasma that does 1080p natively now for $75k.
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The 1080p's will be here by summer, they range in price from $5-13K. Or you can get the 71" LG plasma that does 1080p natively now for $75k. [/B]
Shoot I'll have to pick up 2 at that price.....one for the spare room and one for the throne
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my prijector can do 720p or 1080i and so can my 27 in lcd tv
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There is a difference between accepting a 720p or 1080i signal and native resolution. Anyway, it really doesn't matter. The end result of a great picture is what you should be worried about, not some number.
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Originally posted by goingganzo
my prijector can do 720p or 1080i and so can my 27 in lcd tv
Your BQ 8700 with the HD2+(Mustang) DLP chip does 720p natively. So, it will take in a 1080i signal, but it must 'downconvert' it to 720p for actual viewing.
Regards,
PolkThug -
Originally posted by fireshoes
There is a difference between accepting a 720p or 1080i signal and native resolution. Anyway, it really doesn't matter. The end result of a great picture is what you should be worried about, not some number.
RIGHT ON!!!Bob Mayo, on the keyboards. Bob Mayo. -
Originally posted by gmorris
RIGHT ON!!!
I second that! Just enjoy it! Our grandchildren will laugh at how lame or HD was anyway.:D -
I wanna know what the difference between the 'p' and 'i' resolutions are. If they both refer to lines displayed, what's the last letter indicative of?comment comment comment comment. bitchy.
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Progressive or interlaced.
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progressive scans all the lines progressively, in order basically.
Interlaced scans half the lines on the first pass, then the other half on the second pass... -
Originally posted by brettw22
I wanna know what the difference between the 'p' and 'i' resolutions are. If they both refer to lines displayed, what's the last letter indicative of?
p or "progressive" mans that all lines are drawn on each refresh.
i or "interlaced" means that every OTHER line is drawn on each refresh.
So on a 720p television, 720 lines are drawn 60 times a second (or whatever the refresh rate for a TV is).
On a 1080i, 540 are drawn on one pass, the other 540 are drawn on the other pass, and that entire cycle is done 30 times a second (or half as many times as the progressive television, because each redraw of the screen takes two cycles).If you will it, dude, it is no dream. -
So if the options are 720p and 1080i, I don't see why it would be beneficial to have the 1080 if the picture is basically always playing catch-up.........right?comment comment comment comment. bitchy.
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Originally posted by brettw22
So if the options are 720p and 1080i, I don't see why it would be beneficial to have the 1080 if the picture is basically always playing catch-up.........right?
Higher resolution. In general your eye can't see the interlacing. It blends together.
Personally, I think I am going to wait for 1080p. I imagine that will not be available in tube based TVs though. -
Too much caffeine
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Originally posted by brettw22
So if the options are 720p and 1080i, I don't see why it would be beneficial to have the 1080 if the picture is basically always playing catch-up.........right?
Not really. We've been watching interlaced TV since we've been born. Have you noticed? Not really. I mean, you really have to have some fast motion on the screen to notice the artifacts induced by interlacing. And you know what? You probably wouldn't even notice unless someone told you what to look for. The "videophiles" of the world say 1080i is best for slower moving video because you get more resolution and 720p is better for action video since you won't get interlacing artifacts. My bet is unless you're looking at the video feeds side by side, you can't tell which is which. My matterhorn DLP projector looks freakin amazing even with a 20% loss of resolution over the a HD2 DLP projector. For me, the increase of 20% resolution wasn't worth the extra $2000. -
The 720p signal is 1280 x 720, and 1080i is 1920 x1080, so considerably more horizontal resolution.
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All i can say is I'm glad that I bought a 40" Mitsubishi Tube tv 8-10 years ago........
Upgraditis with sets is a constant change with format availability etc and I'm not ready to drop a few grand on something like this right now....we'll see what happens over the next several years.comment comment comment comment. bitchy. -
Originally posted by brettw22
All i can say is I'm glad that I bought a 40" Mitsubishi Tube tv 8-10 years ago........
I remember those, glad to hear its still working. -
Originally posted by wallstreet
The "videophiles" of the world say 1080i is best for slower moving video because you get more resolution and 720p is better for action video since you won't get interlacing artifacts. My bet is unless you're looking at the video feeds side by side, you can't tell which is which.
Don't pull out your betting purse just yet! I'd hate to see ya loose your beer money.;)
Is there a real and obvious difference between 1080i and 720p? Oh hell yes! Example: Watch a few minutes of any NFL game on Fox-HD or ESPN-HD and compare it to what's on CBS-HD. The difference is very obvious. 1080i is far more prone to pixelation (Blocky Artifacts) than a 720p broadcast. On the flip side, 1080i is superior with regards to detail and saturation. Any blind moroon with 1 foot in the grave can tell the difference...and I'm living proof!!:D -
my 1 yr old Zenith tube TV can do 540p, 720i, 768p, 1080i.
the tv knows what resoultion to display.. depending on the material being fed into it.PolkFest 2012, who's going>?
Vancouver, Canada Sept 30th, 2012 - Madonna concert :cheesygrin:
