HDTV has lifelike pictures and digital sound. The higher resolution produces clarity like you have never seen from a picture tube. Films retain their original width, enhancing your home theater experience.
The basic concept behind high-definition television is not to increase the definition per unit area but to increase the percentage of the visual field contained by the image.
The majority of proposed analog and digital HDTV systems are working toward approximately a 100% increase in the number of horizontal and vertical pixels. (Proposals are roughly 1 MB per frame with roughly 1000 lines by 1000 horizontal points). This typically results in a factor of 2-3 improvement in the angle of the vertical and horizontal fields. The majority of HDTV proposals also change the aspect ratio to 16/9 from 4/3 -- making the image more "movie-like".
Satellite television providers will give you the best satellite tv system that will provide you with 100% Digital high quality signal with satellite dishes that support up to 500 channels. They have a great range of programming, featuring many sports channels and comprehensive international programming including additional foreign language programming packages.