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What Is Digital Television?
Digital television (DTV) is a new way of transmitting high-quality video and audio to your TV set. Using DTV, broadcasters can transmit high-definition TV (HDTV) images, Dolby Digital surround audio, and services such as multicasting (more than one program on the same channel) and datacasting (electronic program guides and interactive television). Several of these services can be combined into a single digital broadcast.
DTV programs are broadcast in both standard definition television (SDTV) or high definition television (HDTV) formats.
SDTV programs are available either as 480-line interlaced (480i) or progressive-scan (480p) video. Widescreen SDTV programs in the 480p format are similar to progressive-scan DVD movies and have improved image detail over 480i programs.
HDTV programs are broadcast either in the 1080-line interlaced (1080i) or 720-line progressive (720p) formats, always in widescreen. Both formats offer much higher picture quality than SDTV.
With DTV, you can listen to both Dolby Digital 2.0 stereo and Dolby Digital 5.1 surround audio through your audio system, as well as multiple language tracks.* In addition, DTV will allow you to interact with your television, choosing programs from a detailed electronic guide or accessing ancillary data about a program.
* Where available
