Answer: The numbers that are the true measure of HDTV performance such as 720p or 1080i refer to the number of rows of pixels on the screen. Standard definition is 480p, that means it has 480 rows of pixels. High Definition is a television with 720 or 1,080 rows of pixels.

Question: What about the letters like “i” or “p” in 1080i or 1080p?

  Answer: These letters refer to how the pixels refresh.

      i = interlaced - even and odd rows of pixels refresh alternately

      p = progressive - all pixels refresh sequentially

For example: A 1080i image will have more pixels and look sharper than a 720p, but may have a slight flicker effect. 1080p is the best type of screen currently in mass production.       

Other Food for Thought:

-To get HD programming you must order it from your cable or satellite provider. You can also use an antenna capable of receiving a digital signal and an HDTV with a digital receiver.

-Use an HDMI connector whenever possible, it will give you the best and most reliable picture and sound.

-The more on the screen, the better. Adjust the “aspect ratio” or “screen” settings on your television until you get the full picture. For example: If you are watching a sports program and the score at the bottom or the top of the screen is partly missing, then the picture is stretched and you are not getting the best possible picture.

-If you are connecting something with a component input instead of HDMI, be sure to get good, quality cables to minimize the risk of interference and to get the best color.

Things to look for when buying a HDTV:

 -at least 2 HDMI inputs

 -1080p display

 -a contrast ratio of at least 5000:1 (preferably 10000:1 or higher)

 -a refresh rate of at least 60Hz (preferably  120Hz)