The HDTV is a television format that differs from the others, as well as digital terrestrial television, for the quality with which emits signals. Both surpass, those already existing, PAL, NTSC and SECAM.

Provides a high resolution image of 1920 pixels by 1080 lines or 1280 pixels by 720 lines, so compared with analog television sets with great accuracy the image, showing all its nuances. For compression is used codecs MPEG-2, H.264 or Windows Media Video High Definition.

With regard to conventional television, in PAL, HDTV offers images up to 5 times more defined. They make use of tracking formats, each table is cool, indeed it does with 60 pictures every second, which ensures good image resolution.