What’s the difference between high-definition and digital TV?
High-definition television (HDTV) displays the highest quality digital TV pictures. While a standard digital picture consists of 480 horizontal lines on the screen, full HD uses 1,080 lines to compose a much more precisely tuned and beautifully detailed TV picture. (Think of the difference between newspaper photos and those in a glossy magazine.) An HD signal also includes Dolby digital surround sound, which offers a superior sound experience. The 2009 switch is merely from analog to digital, however, going from analog to HD is entirely optional.
A standard digital picture consists of 480 horizontal lines on the screen, while high-definition television (HDTV) displays the highest-quality digital TV pictures; 1,080 or 720 horizontal lines. High definition provides a much higher resolution and a clearer, more detailed picture. To view all HDTV features, you need an HDTV set.
