The full form of HDTV is High Definition TVs. The Digital HDTV Grand Alliance implanted this invention in 1990s in the US originally. This is also explained as 1080 active lines, 16 x 9 aspect ratio in ITU-R BT.709.

High defintion TV refers to showcasing of widescreen images with higher refinement and clearness than seen in regular analog TVs, or some other modern TVs formats. It is in fact a Digital Television showcasing format, and is known to be the perfect quality DTV format around.

Plasma, direct-view, rear screen, and front screen projection are diverse sorts of High defintion television displays. It is unthinkable to glimpse High defintion TV without 1080i HDTV tuner which is highly specified.