1080i - is it real?

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Wasp_21

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Not to start any HDready vs Full HD fights here.

Does 1080i really exist on HDReady Tv's?(720) Or is it just on 1080p Tv's?
 
As a side note, 720p is better than 1080i. 1080i is only 540p.
 
Just to clarify, although 1080i has more overall pixels than 720p, it's interlaced.
 
All HD ready TV's should accept a 1080i signal. A few HD ready TV's will also accept a 1080p signal.

Examples (both HD ready panels):
Pioneer PDP-507 (pre KURO)will not take a 1080p signal. It will take 720p and 1080i.
Pioneer PDP-508XG KURO will take 1080p, 1080i and 720p.
 
TYR said:
All HD ready TV's should accept a 1080i signal. A few HD ready TV's will also accept a 1080p signal.

Examples (both HD ready panels):
Pioneer PDP-507 (pre KURO)will not take a 1080p signal. It will take 720p and 1080i.
Pioneer PDP-508XG KURO will take 1080p, 1080i and 720p.
Click to expand...

HD Ready means it accepts up to 1080p, even though it can't display it. A screen is not HD Ready if it does not accept 1080p.
 
Wasp_21 said:
Not to start any HDready vs Full HD fights here.

Does 1080i really exist on HDReady Tv's?(720) Or is it just on 1080p Tv's?
Click to expand...

As pointed out, it will take the signal but downscale to 720. (720i, I assume?). Obviously an HD Ready TV (720 lines) can't show 1080 lines.
 
Quantum Theory said:
HD Ready means it accepts up to 1080p, even though it can't display it. A screen is not HD Ready if it does not accept 1080p.
Click to expand...

The labels are:
HD ready
HD ready 1080p
Full HD (equivalent to Full HD 1080p)

First one does not require the set to accept 1080p signal. "HD ready 1080p" does require it to take 1080p signal.

http://en.wikipedia.org/wiki/HD_ready
 
Last edited:
TYR said:
The labels are:
HD ready
HD ready 1080p
Full HD (equivalent to Full HD 1080p)

First one does not require the set to accept 1080p signal. "HD ready 1080p" does require it to take 1080p signal.

http://en.wikipedia.org/wiki/HD_ready
Click to expand...

Agreed.
HD Ready simply needs to be able to accept and display in 720p.
HD Ready 1080p needs to be able to receive 1080p signals but does not need to be able to display at 1080p. It will simply downscale to either 720p or 1080i.
Full HD must be able to display 1080p and receive 1080p signals.

Right now, if you're buying a screen smaller than 50", HD Ready is more than sufficient.
Firstly, HD is only broadcast in 720p locally and even if you watch 1080p Blu-Ray, you are unlikely to be able to tell the difference on a screen of that size.

Obviously, if you go for a bigger screen than that, Full HD may be worth the extra cost.
 
So in understanding the logic, a 720p will and can only display 720 lines. The fact that a ps3 for example, showing it is 1080i on the resolution could be lies? Also, doesn't i vs p, mean that p refreshes the lines horizontally and vertically as opposed to just horizontally for i? Or is it p refreshes twice as fast as i?
 
Wasp_21 said:
So in understanding the logic, a 720p will and can only display 720 lines. The fact that a ps3 for example, showing it is 1080i on the resolution could be lies? Also, doesn't i vs p, mean that p refreshes the lines horizontally and vertically as opposed to just horizontally for i? Or is it p refreshes twice as fast as i?
Click to expand...

p refreshes the complete screen with every frame
i refreshes every odd line with one frame and every other line on the next frame

... put simply
 
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