Confusion about 1080p LCD HDTV's....

[Black Gobbo]

Okay, on another forum, someone told me that LCD's only display in 720p / 1080i and if a LCD HDTV says 1080p on it, it merely accepts the 1080p signal and downgrades it to 1080i...........since LCD according to them cannot display native 1080p.

Okay, if this is true, what sort of HDTV can display a native 1080p signal? Most stores around me sell primarily 1080p LCD's.

So am I misinformed or what is going on here?

Thanks!

[martinstraka8282]

That is BS! You just have to make sure that the native resolution is 1920x1080, not some other number. There are some that only accept 1080 signals and don't display them though, so be careful. Anything advertised as Full HD is true 1080p.

[gand41f]

Originally Posted by Black Gobbo

Okay, on another forum, someone told me that LCD's only display in 720p / 1080i and if a LCD HDTV says 1080p on it, it merely accepts the 1080p signal and downgrades it to 1080i...........since LCD according to them cannot display native 1080p.

Okay, if this is true, what sort of HDTV can display a native 1080p signal? Most stores around me sell primarily 1080p LCD's.

So am I misinformed or what is going on here?

Thanks!

You're quite misinformed my friend. LCDs by design can only display progressively so if it says 1080p, it's 1080p. (Most of those that are labeled 720p are actually 768p, i.e., 1366x768, but that's another story.)

If you feed it 1080i, it is actually converting it to 1080p since that's the only way it can display it. How good of a job it does in this process (called deinterlacing or inverse telecine depending on the source material) varies greatly between different brands so you need to be careful there if you plan to watch a lot of 1080i material (e.g., most cables or broadcast TVs).

enjoy
gandalf

[Black Gobbo]

Thanks. I thought what I read couldn't possibly be right, but I came here to make sure. Thanks for clearing that up!

[DTMoney84]

As far as which LCD's are the best in this catagory I would have to say Sony Bravia LCD's (XBR2, XBR3, XBR4, XBR5) are the tops in the market followed closely behind by the Samsung 65F series.

[Black Gobbo]

Originally Posted by DTMoney84

As far as which LCD's are the best in this catagory I would have to say Sony Bravia LCD's (XBR2, XBR3, XBR4, XBR5) are the tops in the market followed closely behind by the Samsung 65F series.

Cool! Thanks for the info. I'll have to check those out.

[AV_Integrated]

Sony, Sharp, Samsung.

Pioneer also makes the most kick a$$ display available with their 1080p plasmas.

Of course, at 12 feet, if you use 1080p on a 50" display it is pointless.

[Footloose301]

Originally Posted by DTMoney84

As far as which LCD's are the best in this catagory I would have to say Sony Bravia LCD's (XBR2, XBR3, XBR4, XBR5) are the tops in the market followed closely behind by the Samsung 65F series.

Agreed. Couldn't be happier here

[takezo]

1080p supporting TVs support 1920x1080 resolution. This is known as full HD. Note that you will NOT find a 1080p TV smaller than 37" (37" 1080p TVs are hard to find in brick and mortar sores, mainly Online only), because at 32" and lower the pixels are too small to make a diffrence between 720p and 1080p.

There is no such TV that supports 1080p signal but does not support natve res of 1920x1080p. Hard proof of this fact is with the nature of 1080p video. It's absolutely impossibe to receive 1080p signal without HDMI. HDMI will automatically set resolution to supported resolutions on TV, which is any res that is equal or less than that of your native res. 1080p will not be displayed on a 720p TV.

n00bs offten confuze 1080i with 1080p. 1080i is actualy 1920x540, which makes it simple for your TV to convert to native rez, which is why 1080i looks better than 720p with movies.

[kjacobs03]

I am going to buy the Sharp 32' 1080p set to use as my computer monitor. 1080p is deffinatly necessary for a computer monitor no matter what size.

[Whytewash]

Originally Posted by kjacobs03

I am going to buy the Sharp 32' 1080p set to use as my computer monitor. 1080p is deffinatly necessary for a computer monitor no matter what size.

A 32' screen for your computer?!?! That is STRONG! haha

[AV_Integrated]

You have several pieces of misinformation here that I feel is important to correct...

Originally Posted by takezo

1080p supporting TVs support 1920x1080 resolution. This is known as full HD. Note that you will NOT find a 1080p TV smaller than 37" (37" 1080p TVs are hard to find in brick and mortar sores, mainly Online only), because at 32" and lower the pixels are too small to make a diffrence between 720p and 1080p.

This is generally true with true 'televisions', but obviously, there are a ton of computer monitors out there which are 1920x1080 or higher resolution and are readily available in sizes well under 30". Resolution creating clarity is a function of viewing distance AND screen size. It is 100% incorrect to ever make a claim that it is screen size alone. If I'm a foot from a 20" display then 1920x1080 is definitely going to deliver more detail than 1280x720 - as will most other average people.

Originally Posted by takezo

There is no such TV that supports 1080p signal but does not support natve res of 1920x1080p.

This is not true as I know of a couple of projectors at least (Optoma?) which support 1080p input resolution, but they are only 720p projectors. Just because I may be able to understand French does not mean that I can also speak it.

Originally Posted by takezo

Hard proof of this fact is with the nature of 1080p video. It's absolutely impossibe to receive 1080p signal without HDMI.

Except of course, 1080p can be sent over VGA, Component, and DVI.

Originally Posted by takezo

HDMI will automatically set resolution to supported resolutions on TV, which is any res that is equal or less than that of your native res. 1080p will not be displayed on a 720p TV.

Actually, HDMI resolution settings are determined by the device sending signaling to the source which let it know which HDMI resolutions are fully supported. A 1080p TV could support resolutions exceding 1080p if the processing was designed to do so. Or, the display may only support 720p or 1080i resolutions - which was a huge headache for many displays just a year or so ago.

Originally Posted by takezo

n00bs offten confuze 1080i with 1080p.

Yes they do, and more experienced people do as well.

Originally Posted by takezo

1080i is actualy 1920x540

Not really. One field (not frame) of a 1080i signal is the odd or even lines of resolution from a 1920x1080 frame. There are 60 unique fields per second and every other field comprises the odd or even lines of a frame. Since it is truly a 1920x1080 frame that is trying to be achieved it is critical to have very good processing which treats every moment as a 1080p goal, not 1920x540.

Originally Posted by takezo

which makes it simple for your TV to convert to native rez

Many displays simply treat 1080i like 1920x540 and discard a lot of important information and don't properly evaluate the frames to produce smooth video. 1080i is far more difficult than 1080p to deal with.

Originally Posted by takezo

...which is why 1080i looks better than 720p with movies.

Actually it depends on the source content as to which looks better, but with movies which are shot at 24fps, to convert to 1080i/60 the full resolution of 1920x1080 is included across the interlaced frames and a device which properly deinterlace can produce 100% of the full resolution of 1080p when fed a 1080i source created from 24fps film stock.

This is why the 'benefit' of 1080p is often considered to be a stupid point... and something I agree with.

What matters far more than 1080i/1080p, is 24hz display output, or multiples thereof, as this can remove judder from movies.

[Proteus]

Just watch and read these (I'm seeing way too much misinformation in this thread):

http://www.youtube.com/watch?v=Z-JXfyvlPh0

http://boardsus.playstation.com/play...cending&page=1

[GreenMotion]

Originally Posted by takezo

There is no such TV that supports 1080p signal but does not support natve res of 1920x1080p. Hard proof of this fact is with the nature of 1080p video. It's absolutely impossibe to receive 1080p signal without HDMI.

Not true; my panasonic accepts 1080p, it even displays 1080p when I hit info; yet the resolution is only 1366x768. So explain that one!

[AV_Integrated]

Originally Posted by Proteus

Just watch and read these (I'm seeing way too much misinformation in this thread):

http://www.youtube.com/watch?v=Z-JXfyvlPh0

http://boardsus.playstation.com/play...cending&page=1

Both of those explanations are very good, but neither of them touches that much on the originating source material, which is critical to HD optical discs and this discussion.

Because film originates at 24fps, and many TV shows are actually shot a 30fps on film, it means that 1080i actually contains progressive frame information that is spread across two fields, and proper deinterlacing can perfectly restore the full 1080p original material. Further, if the display is up to the task, it can properly show it at the proper frame rate, or multiple thereof. So, a 30fps show can be presented at 30hz, 60hz, 90hz, 120hz, etc. or a 24fps movie can be presented at 24hz, 48hz, 72hz, 96hz, 120hz, etc.

With that type of material and proper processing, a 1080i output is always going to deliver a better image.

True 1080i source material is rarely better than true 720p source material when it comes to things like action sports. Football, hocket, tennis, etc. When things start moving, interlace artifacting kicks in, which is why many networks which focus on sports decided on 720p material.

Yet, when action is low and there are few camera pans or the original source is a lower frame rate than 60hz, then those stations decided upon 1080i broadcasts.

Yet, the 720p, 1080i debate is moot when it comes to 24fps sources and a display which properly deinterlaces. In those cases, 1080i is always better, and if all processing is done properly, 1080i will look identical to 1080p.

[DrinkMore]

Originally Posted by GreenMotion

Not true; my panasonic accepts 1080p, it even displays 1080p when I hit info; yet the resolution is only 1366x768. So explain that one!

There is some mis information? You either don't have it all or something is not right.

[D1-2005]

my tv does the same, i can set my 360 or ps3 to 1080p and it displays it, shows res on top of tv and everything, but i thought it was just upscaling it.

[gvortex7]

Originally Posted by takezo

1080p supporting TVs support 1920x1080 resolution. This is known as full HD. Note that you will NOT find a 1080p TV smaller than 37" (37" 1080p TVs are hard to find in brick and mortar sores, mainly Online only), because at 32" and lower the pixels are too small to make a diffrence between 720p and 1080p.

There is no such TV that supports 1080p signal but does not support natve res of 1920x1080p. Hard proof of this fact is with the nature of 1080p video. It's absolutely impossibe to receive 1080p signal without HDMI. HDMI will automatically set resolution to supported resolutions on TV, which is any res that is equal or less than that of your native res. 1080p will not be displayed on a 720p TV.

n00bs offten confuze 1080i with 1080p. 1080i is actualy 1920x540, which makes it simple for your TV to convert to native rez, which is why 1080i looks better than 720p with movies.

Well actually you are wrong because Sharp has the the world's only 32" 1080p LCD tv in the form of the LC-32GP1U.

[DrinkMore]

Originally Posted by gvortex7

Well actually you are wrong because Sharp has the the world's only 32" 1080p LCD tv in the form of the LC-32GP1U.

Are you all including Monitors in this? Dell's 2407 supports 1080p native.

[AV_Integrated]

Originally Posted by DrinkMore

There is some mis information? You either don't have it all or something is not right.

No, he is correct. His TV accepts 1080p resolution, but then converts it to WXGA to put it on screen.

For example, this projector...
http://www.projectorcentral.com/InFo...y_Big_IN76.htm
...accepts 720p, 1080i, 1080p/60, 1080p/24, as well as other resolutions, but they must all be converted to 1280x720 (720p) to display on screen.