Ok, here is a link to an article about a new tv:
http://gear.ign.com/articles/806/806036p1.html

But I have noticed this type of thing popping up everywhere now that i have been looking into a new tv... and I have sold HDTVs in the past which is driving part of my confusion on this very subject.

Analog tv: 480i +/-
SDTV: 480i/p
EDTV: < 720i/p
HDTV: >= 720i/p

No back in the day a HDTV would do 1080i, 720p, or 480i/p. But now I am seeing HDTVs listed as 720p w/ NO mention of being 1080i capable. 1080i is still the top broadcast standard for HDTV. But if you look closer at the pixel resolution they show a spec under 1080i lines of res.

And from what I recall the difference between i and p is in (i)interlace scanning the odd lines get scanned then the even lines and when shown together fast enough the eye sees it as a whole picture. Now (p)progressive scan would show you all your lines at the same time each time.

So what gives with this 720p crap?

...and FWIW 1080p is only supported by Blu Ray, HD DVD, PS3, and XBX 360 .... 1080p is not supported as a broadcast tv standard.

http://en.wikipedia.org/wiki/Hdtv

Kind odf answered some of this I guess...but it appears mfgrs have taken out the ability of HDTVs doing 1080i in favor of doing the lower res 720p format.... and you have to now get a 1080p capable tv to get 1080i.

WDF!

**********************************

A WDF indeed:

Well after looking at screen sizes and resolutions I have come to the following.... manufacturers and the FCC are letting folks get away with murder here.

From what it appears

HDTV signal IS 720i/p to 1080i (p for other than tv) I KNEW THIS ONE
but the caveat is to do 1080i correctly the res of the tv has to be 1920x1080!
--and some of the TV broadcast in HD is done in 1080i!

So.... While a 720p tv is "HD" it doesn't do 1080i..it down converts to 720p which is 1280x720

And it appears that <42 " models don't go all the way to 1920x1080 aka 1080i/p You only get the 1080i/p on 46" and up tvs. I guess the physical dimensions of the tv screen make this problem so....

I understand as much of this thread as one of GTS's computer threads...

1080p is true HD. 1080i is not. You'll notice that 1080p tvs are a helluva lot more than 1080i. I have a 1080i.

BTW, the 720 vs 1080 difference is just the size of the TV, from what I've been told. 1080 is common for 40" and above....maybe 37.

Another thing, out of the two "high tech" DVD's out today, the Blu-Ray and the HD-DVD, only the Blu-Ray is true HD (1080p).

RebelKev Wrote:1080p is true HD. 1080i is not. You'll notice that 1080p tvs are a helluva lot more than 1080i. I have a 1080i.

BTW, the 720 vs 1080 difference is just the size of the TV, from what I've been told. 1080 is common for 40" and above....maybe 37.

Another thing, out of the two "high tech" DVD's out today, the Blu-Ray and the HD-DVD, only the Blu-Ray is true HD (1080p).

1080i is true HD. Its the top broadcast tv standard.

HDDVD does support 1080p. THe first Toshiba... the ___A didn't have the 1080p option but the ___A1 does.

PirateTreasureNC Wrote:1080i is true HD. Its tyhe top broadcast tv standard.

HDDVD does support 1080p. THe first Toshiba... the ___A didn't have the 1080p option but the ___A1 does.

1080i is NOT true HD. My LG has 720p, and 1080i. 1080p on a 42" Plasma is true HD.

Quote:To compare 1080i and 1080p, it is important to compare framerates. Due to interlacing, 1080i has twice the frame-rate but half the resolution of a 1080p signal using the same bandwidth. This is especially useful in sports shows and other shows with fast-moving action. However, on some flat screens that don't support interlacing, this instead becomes smeared or jarred artifacts.

http://en.wikipedia.org/wiki/1080i

Even though it's Wikipedia, sometimes they get it right.

RebelKev Wrote:

PirateTreasureNC Wrote:1080i is true HD. Its tyhe top broadcast tv standard.

HDDVD does support 1080p. THe first Toshiba... the ___A didn't have the 1080p option but the ___A1 does.

1080i is NOT true HD. My LG has 720p, and 1080i. 1080p on a 42" Plasma is true HD.

Quote:To compare 1080i and 1080p, it is important to compare framerates. Due to interlacing, 1080i has twice the frame-rate but half the resolution of a 1080p signal using the same bandwidth. This is especially useful in sports shows and other shows with fast-moving action. However, on some flat screens that don't support interlacing, this instead becomes smeared or jarred artifacts.

http://en.wikipedia.org/wiki/1080i

Even though it's Wikipedia, sometimes they get it right.

My point is still valid though..... No station broadcasts in 1080p.

Also, 1080p would look "better" becaues it does all the 1080 lines each time rather than half and half like interlacing scan does.

PirateTreasureNC Wrote:My point is still valid though..... No station broadcasts in 1080p.

Also, 1080p would look "better" becaues it does all the 1080 lines each time rather than half and half like interlacing scan does.

Actually, they do with HD channels. They are, however, limited. Wait for a couple of years when the FCC has mandated that everything go digital. Hell, we still have tons of analog channels.

RebelKev Wrote:

PirateTreasureNC Wrote:My point is still valid though..... No station broadcasts in 1080p.

Also, 1080p would look "better" becaues it does all the 1080 lines each time rather than half and half like interlacing scan does.

Actually, they do with HD channels. They are, however, limited. Wait for a couple of years when the FCC has mandated that everything go digital. Hell, we still have tons of analog channels.

What channels broadcast in 1080p then? If I am not mistkaen CBS and NBC use 1080i...I think FOX and ABC use 720p

On that last part.... by 2009 ( I beleive--I'd have to go look at the piece of lit I saw this at) all those analog channels will have to be at worst SD. I'm also kind of suprised a tv startup like CSTV didn't go haead nad offer HD at the same time.

Date of change:
http://www.ntia.doc.gov/dtvcoupon/index.html

&

http://www.dtv.gov/whatisdtv.html

PirateTreasureNC Wrote:What channels broadcast in 1080p then? If I am not mistkaen CBS and NBC use 1080i...I think FOX and ABC use 720p

On that last part.... by 2009 ( I beleive--I'd have to go look at the piece of lit I saw this at) all those analog channels will have to be at worst SD. I'm also kind of suprised a tv startup like CSTV didn't go haead nad offer HD at the same time.

Date of change:
http://www.ntia.doc.gov/dtvcoupon/index.html

&

http://www.dtv.gov/whatisdtv.html

You don't have cable? No, I don't mean the lower channels that claim to broadcast in HD. I mean the higher channels. The higher you get, the better signal. The lower, you start getting to, or close to analog. My HD channels are in the 200 range from Comcast.

with Dishnetwork, no locals are HD. HBO and ESPN are and some random channels. the sports broadcasts are the biggest difference. Movies look about the same. my local CBS (which is HD)had a fight with Dish so they cant offer the HD version. but if you get a HD tv, WRAL will give you a HD antenne.

the last i read (about a year ago) the best you could get out of the wall from cable or dish was 1080i.

http://www.timewarnercable.com/charlotte...mming.html
only HD they mention is 1080i.

http://www.cnet.com/4520-7874_1-5108580-3.html Wrote:True 1080p content is scarce outside of Blu-ray, HD DVD and the latest video games, however, and none of the major networks has announced 1080p broadcasts

RebelKev Wrote:

PirateTreasureNC Wrote:What channels broadcast in 1080p then? If I am not mistkaen CBS and NBC use 1080i...I think FOX and ABC use 720p

On that last part.... by 2009 ( I beleive--I'd have to go look at the piece of lit I saw this at) all those analog channels will have to be at worst SD. I'm also kind of suprised a tv startup like CSTV didn't go haead nad offer HD at the same time.

Date of change:
http://www.ntia.doc.gov/dtvcoupon/index.html

&

http://www.dtv.gov/whatisdtv.html

You don't have cable? No, I don't mean the lower channels that claim to broadcast in HD. I mean the higher channels. The higher you get, the better signal. The lower, you start getting to, or close to analog. My HD channels are in the 200 range from Comcast.

I'm on Cable...non-digital cable.. however a tv in the house is on the digital cable ( so we could get CSTV! ). Its not a matter of cable or not or the channel number or not as all the channels will have to be HD/Digital by 2009. Regardless 1080p is not a broadcast standard for TV. Now if your PPV channels are using the movies off BluRay/HDDVD it would be conceivable they could be in 1080p but I think even those are probabbly off teh master tapes via digital distribution.