What is the difference between a digital TV and an HD TV?
The Digital Television (DTV) broadcast system allows for stations to choose various program channel formats. These may be “standard definition” (SDTV) channels which have approximately the same resolution as traditional analog television, or “high definition” channels (HDTV) that provide far greater resolution than analog television broadcasts. The DTV broadcast system allows television stations to broadcast an HDTV channel, multiple SDTV channels, or a combination of one HDTV channel and multiple SDTV channels.
