Thursday, May 9, 2013

What is the difference between these television formats?

Q. What is the difference between 1080i, 1080p, 720p, 720i, HDTV, HR HDTV, and Blu-Ray Disc. If these are formats at all. Thanks.

A. 1) Resolution: How much information the TV is capable of displaying on the screen. The number is the amount of horizontal lines in total. I stands for interlaced, P stands for progressive. So a TV that can display 1080p can show you 1080 lines all at the same time (currently the highest resolution available to the public), a TV that can display 1080i also uses 1080 lines, but being interlaced- only shows roughly 1/2 of them at a time. Technically, a 1080p TV is showing twice as much info at any given time- although you'll notice that this does NOT mean the picture is twice as good...

2) HD Ready or Capable vs. HDTV or HD integrated: If a TV is labeled HDTV or HD integrated, this means the TV is not only capable of at least 720p in a 16:9 format- but it also has a HD tuner on board (this part only matters if you will be receiving your signal off of antenna though). If a TV is labeled HD ready or capable- this means it too can produce a 720p or better picture in it's 16:9 format, but the TV does not have a HD tuner built-in. If you will be getting your TV signal through cable or satellite- this will mean nothing to you...

3) HD-DVD and Blu-Ray: These are competing formats (remember VHS and Beta?) in the 720p or higher DVD format. These happen to be DVD's that show a higher resolution. Putting the answer from the 1st item into use- A normal DVD is encoded mpeg2. A normal DVD player will send this signal out to the TV either 480i or 480p depending on your player, cableing, and TV. A Blu-Ray or HD-DVD will send out a 1080p signal (again depending on your set up). These require a HD-DVD and/or Blu-ray player- not a normal DVD player, and to take advantage of the picture quality, need to be connected to a TV that can display a 1080p picture via a HDMI connection.

If you are behind in the "technology" realm- I would highly suggest going to your local home theater store (no I do not mean Best Buy or Tweeter, or Circut City- I mean go find a real home theater store) and tell a real a/v saleman what you are looking for. The knowledge and expertise a good a/v person will offer you is better than the $50 you'll save by trying to do this yourself down at CostCo...


whats the difference betweene 1080 i and 1080 p hdtvs?
Q. looking to buy a 22inch hdtv. but some are 720 and some are 1080 i. i know the big screens are 1080 p . please help.

A. 1080i means that the signal is interlaced, that means all the "odd numbered lines" info are sent first (line 1 3 5 7 9...) then they send all the 'even numbered lines" (2 4 6 8 10...)
That was an old technique used to save half of the very limited bandwidth back then. Because of the technology, LCD and Plasma are inherently progressive (P, that means lines are sent 1 2 3 4 5...)
All HDTVs contain a deinterlacing system to change I into P, but some works better than others. On some TVs you will see weird scan lines.

There is a 1080p 22", for example there's a 1080p 22" Vizio selling in costco called VO22LF. But then, I don't think you can tell the difference between 720p (720 lines on a screen) and 1080p on a 22" without staring at it for an hour. It matters when you want the TV to double as your monitor though.

Be careful , some 22" are made to monitor specs and are not 16:9 but 16:10, when you watch TV the images will look slightly stretched vertically.


Where is the best place to buy a HDTV?
Q. I plan on buying a ps3 and i am looking for a HDTV that has up to 1080p. I stay on campus and don't need anything larger than 23". I am not looking to spend more than $375. Am I asking for too much?
i was thinking about

http://www.circuitcity.com/ssm/Polaroid-19-LCD-HDTV-1911-TLXB/sem/rpsm/oid/180272/catOid/-12869/rpem/ccd/productDetail.do

A. no that is a perfect amount i suggest going to costco





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