What are the goals of digital television?
The primary goals are to offer better picture and sound quality through the use of digital signal processing, and to allow the introduction of new digital services such as multicasting (transmitting multiple streams of video on a single channel) and datacasting. The FCC has mandated that DTV signals be freely available over the air in every locality nationwide that has analog television. How do current TV broadcasts and DTV compare to each other? There are some similarities. Both use VHF and UHF broadcast frequencies, although some stations may wind up switching frequencies after the full implementation of DTV. Once the transition to digital TV is complete, TV channels 52 through 69 will be re-assigned to other services. While analog and digital television broadcasts have a modulated carrier wave, the way that signal is modulated is quite different. Analog TV uses an amplitude-modulated (AM) signal for pictures and frequency modulation (FM) for audio, while DTV signals use digital “pac
The primary goals are to offer better picture and sound quality through the use of digital signal processing, and to allow the introduction of new digital services such as multicasting (transmitting multiple streams of video on a single channel) and datacasting. The FCC has mandated that DTV signals be freely available over the air in every locality nationwide that has analog television.
The primary goals are to offer better picture and sound quality through the use of digital signal processing, and to allow the introduction of new digital services such as datacasting. Another goal is to transmit multiple streams of video on a single channel. The FCC has mandated that DTV signals be freely available over the air in every locality nationwide that has analog television.
To offer better picture and sound quality through the use of digital signal processing, and to allow the introduction of new digital services such as multicasting and datacasting. Another goal is to transmit multiple streams of video on a single channel. The FCC has mandated that DTV signals be freely available over the air in every locality nationwide that has analog television. How do current TV broadcasts and DTV compare to each other? There are some similarities. Both use VHF and UHF broadcast frequencies, although some stations may wind up switching their channels after the full implementation of DTV. While analog and digital television broadcasts have a modulated carrier wave, the way that signal is modulated is quite different. While analog TV uses an amplitude/modulated (AM) signal for pictures and frequency modulation (FM) for audio, DTV signals use digital “packets”, or bursts of data, to transmit pictures and audio. Four modulation systems are currently being used for DTV: *
