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Pardon my ignorance. But if I purchase a plasma that has 720p does that mean that it does or does not come with 1080i?


I am looking to purchase Panny TH-50PX80U

Thank you.
 

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Actually the Plasma's are really 768P!!! A Plasma or LCD for that matter can't display a Interlaced 1080i picture. That's Impossible, the HDTV will De-Interlace the picture and scale it up or down as needed. So set to 720P and it scales up a bit to 768P, and set to 1080i and it De-Interlaces the Picture and scales the image down to 768P.


Only a CRT(TUBE) type display can show a true Interlaced picture. Which TV's have been doing since they first came out. At 480i of course.
 

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Of course it would be technically possible to display a interlace picture without deinterlacing it on a plasma or LCD.
 

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I have the 50" 1080i Hitachi Plasma (P50H401).


It has an odd resolution of 1280 (H) x 1080 (V).


My PS3 and DirecTV HD-DVR (HR21) look absolutely amazing on it.
 

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Those Hitachi Plasma's are NOT Interlaced! No such thing as a Interlaced Plasma or LCD. Nothing new about a Plasma or LCD being able to use a 1080i INPUT. Big deal, it's still De-Interlaced and scaled down, also according to CNET that Hitachi P50H401 got a 2 1/2 out of 5 star rating. If you think the picture looks amazing, you have low standards. Reading the review, it didn't sound all that great to me. Yours is also scaled down as it's not a true 1080P display, other 1080P displays just de-interlace the 1080i signal. It's a odd ball so called 1080P display. There's always a few of them out there, generally though a 720P plasma is 768P.


Plasma and LCD's by Design show a Progressive Picture. Interlaced is how TUBE TV's show a picture. Front Projection, Rear Projection, Direct View, TUBE. Plasma's and LCD's just don't work that way. They will take whatever INPUT you give it and process however way it needs to be to be displayed at it's Native Resolution. Period. There's not a single Interlaced Plasma or LCD out there.


Part of problem is a few places advertising 1080i Plasma's. Look as the Resolution and it's not 1080i, it's 768P. This is confusing a few people out there. You can't set your PS3 for example to 768P, it's either 720P or 1080i. Since in theory it's better to scale down and loose Detail then to scale up and add what's not there. Seeing any Improvement setting at 1080i is pretty slim. It.s B.S. Marketing. Any HDTV out there will allow just about any INPUT, 480i, 480P, 720P, 1080i and 1080P and De-Interlace, or Interlace, and Scale up or down to whatever that Displays Native Resolution is. A Plasma and LCD just doesn't display a picture the way a TUBE TV does.
 

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Quote:
Originally Posted by JBDragon /forum/post/15460969


Those Hitachi Plasma's are NOT Interlaced! No such thing as a Interlaced Plasma or LCD. Nothing new about a Plasma or LCD being able to use a 1080i INPUT. Big deal, it's still De-Interlaced and scaled down, also according to CNET that Hitachi P50H401 got a 2 1/2 out of 5 star rating. If you think the picture looks amazing, you have low standards. Reading the review, it didn't sound all that great to me. Yours is also scaled down as it's not a true 1080P display, other 1080P displays just de-interlace the 1080i signal. It's a odd ball so called 1080P display. There's always a few of them out there, generally though a 720P plasma is 768P.


Plasma and LCD's by Design show a Progressive Picture. Interlaced is how TUBE TV's show a picture. Front Projection, Rear Projection, Direct View, TUBE. Plasma's and LCD's just don't work that way. They will take whatever INPUT you give it and process however way it needs to be to be displayed at it's Native Resolution. Period. There's not a single Interlaced Plasma or LCD out there.


Part of problem is a few places advertising 1080i Plasma's. Look as the Resolution and it's not 1080i, it's 768P. This is confusing a few people out there. You can't set your PS3 for example to 768P, it's either 720P or 1080i. Since in theory it's better to scale down and loose Detail then to scale up and add what's not there. Seeing any Improvement setting at 1080i is pretty slim. It.s B.S. Marketing. Any HDTV out there will allow just about any INPUT, 480i, 480P, 720P, 1080i and 1080P and De-Interlace, or Interlace, and Scale up or down to whatever that Displays Native Resolution is. A Plasma and LCD just doesn't display a picture the way a TUBE TV does.

Why do you think a Plasma or a LCD cannot display an interlaced picture? It just means every 2nd lline is black. The Hitachi 42PD8900TA doesn't scale it down, it's a native 1080 line screen but accepts only 1080i.
 

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Quote:
Originally Posted by ageha /forum/post/15461153


Why do you think a Plasma or a LCD cannot display an interlaced picture? It just means every 2nd lline is black.

That's not how progressive scan displays show interlaced content though. Instead they combine adjacent fields via pulldown or motion adaptive deinterlacing, and then show a complete frame.

Quote:
The Hitachi 42PD8900TA doesn't scale it down, it's a native 1080 line screen but accepts only 1080i.

It may only accept 1080i, and it may use an ALiS 1080 line panel, but it is not a true 1080i display in the way that an old 1080i HD CRT is. It still using the deinterlacing techniques I mention above.
 

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Quote:
Originally Posted by ageha /forum/post/15461153


Why do you think a Plasma or a LCD cannot display an interlaced picture? It just means every 2nd lline is black. The Hitachi 42PD8900TA doesn't scale it down, it's a native 1080 line screen but accepts only 1080i.

That Hitachi ONLY has a Resolution of 1024 x 1080, that's not full 1080P, which is 1920x1080!! So YES, it's scaled down to from 1920x1080 to 1024x1080 and also De-Interlace that Interlaced 1080i format to a Progressive format because once again, Plasma's and LCD's ONLY display a Progressive picture. The early 1080P displays didn't accept a 1080P INPUT like they do NOW. There was nothing that would output a 1080P Signal. HD Specs were 720P and 1080i. The 1080i displays were the CRT, and 720P the Plasma(Along with the much cheaper 480P EDTV Plasma's) and LCD's. Also quite costly, especially when the first 1080P displays starting showing up. The first Device that was released that could output a 1080P signal I believe was the PS3, and later on after a Update, the Xbox 360. Now you can add Blu-Ray to that list along with all the other NEW HD Boxes out now.

http://www.cnet.com.au/tvs/plasma/0,...9270838,00.htm
 

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Quote:
Originally Posted by JBDragon /forum/post/15470112


That Hitachi ONLY has a Resolution of 1024 x 1080, that's not full 1080P, which is 1920x1080!! So YES, it's scaled down to from 1920x1080 to 1024x1080 and also De-Interlace that Interlaced 1080i format to a Progressive format because once again, Plasma's and LCD's ONLY display a Progressive picture. The early 1080P displays didn't accept a 1080P INPUT like they do NOW. There was nothing that would output a 1080P Signal. HD Specs were 720P and 1080i. The 1080i displays were the CRT, and 720P the Plasma(Along with the much cheaper 480P EDTV Plasma's) and LCD's. Also quite costly, especially when the first 1080P displays starting showing up. The first Device that was released that could output a 1080P signal I believe was the PS3, and later on after a Update, the Xbox 360. Now you can add Blu-Ray to that list along with all the other NEW HD Boxes out now.

http://www.cnet.com.au/tvs/plasma/0,...9270838,00.htm

Erm, nobody said the Hitachi is a 1080p display... Anyway, 1080p just means a vertical resolution of 1080 lines, the horizontal resolution is not defined.
 
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