What is the difference between hdtv and 1080p hdtv?

HDTV is the term for a range of television formats. The common formats in use today are 720p, 1080i and 1080p. There are other resolutions that can also be classed as HD but are not in use today. Each of the resolutions can be delivered at a variety of frame rates.

1080p is just one format in the HDTV class. It uses 1920 x 1080 pixels and the image is created by a single pass of the screen from the top to the bottom of the image. Contrast this with 1080i which requires two passes of the screen from top to bottom to create a full and complete image.

720p and 1080i are the two formats used for broadcast at present. 1080p is found in local sources such as games consoles and Bluray discs but not yet in live broadcasts.

Any HDTV will handle any of the HD formats without any user set up required.