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what is up with the whole 480i-1080p thing?

by faith trust and pixie dust
Published Jun 11, 2008
Views: 404

When you see the numbers 480i, 720i, 720p, 1080i, 1080p...think of computer resolutions.

"Each of the numbers, 1080, 720, and 480 indicates the number of vertical lines of resolution present in a video signal or that a television is capable of displaying. For example, a 1080p video signals have 1080 lines of information from the top to the bottom of the image. The more lines used to describe the image, the clearer and "higher-quality" it is. In the United States, there are three common standards of digital video quality: 1080i/p, 720i/p, and 480i/p."

Here is a link to a good diagram and the rest of the article that was copied from:

http://www.hddefinition.com/resolution.php

Most non HD is displayed as 480i signal on an HD TV. 480i is compairable to no hd, but it doesnt distort the image too much. If you select a widescreen tv, make sure the remote has a button for aspect ratio...you should be able to change from 16:9 to 4:3. While 16:9 is perfect for HD, non HD will be stretched. If there is an aspect ratio button on the remote, you can easily change to watching it with bars on the sides of the screen so the image is not stretched.

oh and one other pointer...coax and A/V (Yellow, Red, White) do not carry or produce HD...so unless you choose a TV with a QAM tuner that pulls in HD through a coax, make sure there is enough componant and HDMI connections.

 

Filed under: Internet & Technology




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I had an issue with my new TV this morning (Samsung 1080p). When I turned it on the screen said no signal. I checked the input source and it said it was on HDMI1, where it was supposed to be, but no picture. I tried changing channel to no avail. I noticed on the TWC cable box above the time it said 480. This seemed a little odd since this was a HD Box. I finally called time warner and they said to reboot the box. I did and it came back on. I asked if she knew why it did this and she didn't know. She also didn't know why it said 480. I forgot to look at it again after it started working. Any ideas? I don't want to have to do this every time I turn on the TV.

Very informative article to the newby in HD programing! I would like to join this group if at all possible!

My first instinct is "bad box."

We never had this issue back when we had cable. We went to satellite because it is cheaper and the picture is a lot better, in addition to the fact we get a LOT more HD channels.

It does sound like a box problem...I have had plenty of them...good ol' Time Warner...but then again, I have heard some issues with satellite too, just different problems.

Newb question: Is there any discernible difference between 1080i and 1080p?

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