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General discussion

TV Specs - What Do They Mean....Help

Jul 17, 2005 9:38PM PDT

OK, I bought a Sony HD plasma with a resolution listed as 1024 x 1024. Others are listed at 1080 x 720, etc. What do these ratings mean, what's better than what, when does a TV qualify as being "HD," what do the the little letters after the number mean (as in 720i or 720p).
Another poster had said that as far as he could tell, a resolution of 1024 x 1024 (as on the Sony KDE-37XS955 which I've ordered) was "impossible," yet a Fujitsu plasma I was looking at was also listed as "1024 x 1024."
Please help me better understand all this.
Thanks.

Discussion is locked

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Just an observation.
Jul 17, 2005 10:25PM PDT

I see such errors propagate over web pages and find it amusing. Next time, go to the maker's site and see what they write.

Bob

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What Error(s) Are you Referring To....
Jul 18, 2005 3:01AM PDT

...When I know what you are referring to I'll be happy to go to Sony's site and see what's up.

Thanks.

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Why not just go?
Jul 18, 2005 3:25AM PDT

You posted what may be the errors. Just asking. Why not check with mother Sony?

Bob

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Because Those Specs Come Directly From Their Website....
Jul 18, 2005 5:43AM PDT

...So I didn't figure that would lead anywhere productive.

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Yeah, we knew that...
Jul 19, 2005 5:28PM PDT

...of course the info displayed anywhere comes directly from the 'mother Sony.' But, just to be sure, I went to Sony and found that the resolution of this model is, in fact, 1024x1024 resolution. And I don't know who told anyone that this resolution is 'impossible' because it is the resolution of several Sony and other brand plasmas.

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What are you talking about?
Jul 19, 2005 2:39PM PDT

As a moderator, you have a responsibility to this forum which was designed for help to not make stupid posts and to reply to questions directly instead of shooing everyone away. Why do you take such time making unrequired posts? Frankly, I don't think you're doing your job as a moderator by making 6 out of 15 posts on a single discussion just bickering with yourself about what a forum is or isn't. Really, you shuld get a life and stop replying to questions you're not going to answer.

BUT HAVE A NICE DAY!!!!!!!!!!!!!!

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no responsibility at all.
Jul 20, 2005 9:33AM PDT

since no moderator is paid they have no responsibilities either. but of course an attitude adjustment would do good in this case. as far as i know robert has a lot of knowledge. but as the professor that i had when studying, he knew a lot but had no clue how to share his knowledge (teach). It takes more than only knowledge to be a moderator in my opinion. it takes tact. patience. among other things.

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funny
Jul 18, 2005 12:18AM PDT

i just posted another post in my thread that was ignored or not replied to which is the same as you are asking for! i wish somebody would know how to answer you/us. isn't that what this forum is for?

deimos thanks you.

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Take a moment to read the Forum FAQ and policies.
Jul 18, 2005 12:57AM PDT

Replies are voluntary...

Bob

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they sure are
Jul 18, 2005 1:08AM PDT

but what's the forum for? why nor just make up a faq place and there you got it all? i find you don't reply to many questions but just send people to do they're own searches. anyone can do that moderator's job. most people know how to do that but out of convenience they use forums. as a moderator you should know.

deimos is rather annoyed but always gets in a better mood after some time. Angry

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No pay.
Jul 18, 2005 1:21AM PDT

Read the FAQ and policies again. No one must reply. I didn't tell you, but what you have to do is help your cause by...

-> Making a great or interesting post.

Any post that could be answered with a simple Google or by going shopping my find no answer and just sink. Just so you know.

In closing, there are no paid moderators so replies are optional. If you find that upsetting, think it over till you understand what sort of forum this is.

Bob

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"they sure are"
Jul 18, 2005 2:11AM PDT

what i meant by that subject line was that they sure are free to answer. i know nobody has to answer, but sometimes it would be nice to get an answer even if there are ways of finding it out elsewhere.
finally i just wonder what kind of questions could not be answered by doing a google? i think this is a help forum. maybe there are discussion forums too here. but mainly a help forum.

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Not a help forum.
Jul 18, 2005 2:27AM PDT

Read the FAQ again.

"We are proud to present these message boards for you to ask and answer questions and to voice your opinion on today's important high-tech issues"

These are message and discussion boards. Some help is rendered which is nice but you have to pose your question in a good way to peak the interest and solicit a response.

Hope this helps clarify the forums for you.

Bob

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I have always thought of them as "Help" fourms
Aug 19, 2005 10:14PM PDT

I have received a lot of good help and advice not only when I asked but mostly from just reading.

I don't think I remember seeing what you quoted but on the page listing the various forums is says:

"Our vibrant community provides a place where all members can discuss and ask for help on a wide variety of technical topics."

Most people come here, I think, to ask for help not chit chat.

Just my opinion.

Richard

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To both Psych Doc and Deimos
Jul 18, 2005 2:26AM PDT
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Hmm, how does that apply?
Jul 18, 2005 3:28AM PDT

I searched that link for the number 1024 and came up empty. Can you provide copy that explains this 1024 x 1024 anomaly under discussion?

My bet is that it's just an error on some web site. There are far too many like that out there.

Bob

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Understanding Aspect Ratios and Screen Resolutions...
Jul 18, 2005 3:47AM PDT

Hello,

Aspect ratios and screen resolutions are very confusing and most people have not even taken the time to really understand them. There are so many different screen resolutions and aspect ratios out there it is hard to go through every one but for sake of simplicity I will show you what they basically mean and what you really need to be concerned with.

I actually just finished researching this topic in depth and am still a little dazed because these two topics actually crossover between the computer world and home electronics, with different meanings.

Here goes.

4:3 (pernounced 4 by 3) has been the standard for CRT TV's for over 50 years. 4:3 stands for 3 units high by 4 units wide when you look at your screen. Now if you divide 4 by three you get a integer of 1.33 to 1. So you can describe the aspect ratio of old CRTs in two ways 4:3 (ratio) or 1.33 (integer).

16:9 is the standard for HDTV. Again, if you divide 16 by 9 you will have an aspect ratio of 1.78.

The standard for WideScreen is 1.85 16.70:9
The standard for Anamorphic WideScreen (also know as CinemaScope)is 2.35. I was never able to locate the exact ratio for this screen shape. My assumption is that it is 21.19:9.

That said, how does the screen resolution fit into the above aspect ratios above?
When speaking of screen resolutions, a standard computer screen equivilent to the standard 4:3 CRT TV has a resolutions of 640x480.

Most displays use a square pixel size which means the display has more vertical columns than horizontal rows to complete a 4:3 or 16:9 image. Using a square pixel we can calculate how many vertical columns must be used for every horizontal line to create the proper image size:

4:3 display = 1.33 pixels high for every 1 pixel wide
16:9 display = 1.77 pixels high for every 1 pixel wide

Not all displays use a square pixel. Most newer displays use a slightly rectangular pixel and use interpolation, aliasing, or scaling to provide the illusion of a higher resolution square pixel display. Some of the 16:9 displays have a physical resolution of 1024 columns by 1024 rows because they use a 1.77mm horizontal x 1mm vertical pixel size.

The actual screen resolutions for your different displays are as follows:

480i - The picture is 704x480 - (60/2 interlaced frames per second)= 30 complete frames per second.

480p - The picture is 704x480 - 60 complete frames per second.

720p - The picture is 1280x720 - 60 complete frames per second.

1080i - The picture is 1920x1080 - (60/2 interlaced frames per second)= 30 complete frames per second.

# 1080p - The picture is 1920x1080 - 60 complete frames per second.

So in order for Sony and others to create a display with a resolution of 1024 x 1024 to be capable of displaying a 1080i (interlaced) image would require scaling and altering the image to fit the screen.

Until I am able to contact Sony and a few other manfacturers tech support dept for a more definitive answer (if they will give it) on how these displays are outputting 1080i, I hope this helps you with your questions.

Take Care,

Shawn Mosqueda
WireSmart LLC

If you would like to contact me, click on the profile link below.

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All You Need to Know is Right Here!
Jul 19, 2005 2:28PM PDT

I do know that any one of the following qualifies as HD: 1920x1080 (1080i), 1024x1024, 1280x720 (720p), 1024x768 (768p), and 1080x720 (720p?).
The 'p' stands for progressive format; this meaning that the full picture updates every 60th of a second. The 'i' stands for interlaced format; this meaning that half the picture updates every 60th of a second, thereby generating 30 complete frames per second, instead of 60.
Say you have a TV and you turn it on. Also, say this TV is in interlaced format. When it turns on, it will first bring up pixel lines 1,3,5,7, etc. (horizontal), then it will go back and fill in the missing lines of pixels (2,4,6,Cool. You don't see this, though, because it happens in 1/30th of a second.
Say you have a progressive format TV and you turn it on. It will start with line 1 and fill in all of the lines in succesion. (2x the speed of interlaced)

HOPE THIS HELPS!!

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Found two more HD resolutions...
Jul 19, 2005 5:34PM PDT

1366x768, 1365x768

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TV Specs - What Do They Mean
Jul 20, 2005 8:00AM PDT
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re
Aug 21, 2005 7:39AM PDT

the resolution is possible for the tv youi bought. Many plasma's use that resolution. Basically they have to use an image scaler to correct for the difference in horizontal and vertical pixels. That would leave a 1:1 where as 16:9 is generally 1.78:1 Bascially its an hdtv w/o all the resolution but still should be pretty clear. Hope that helps.