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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
WHAT DO I NEED TO WATCH DIGITAL TV?
To watch HDTV programs, you will need to connect the HDA100 to an HDTV-ready TV. An HDTV-ready TV has a widescreen image and includes component and digital* video inputs to accept the HDA100 signal. The HDA100 will also work with newer Digital Cable Ready (DCR) HDTV sets equipped with the High Definition Multimedia Interface (HDMI) connector.
You can also use the HFA100 to watch a digital TV program on an older analog TV, provided the TV has A/V inputs to connect to the HFA100's A/V outputs. If you use this type of connection, HDTV programs will appear on analog TVs as a 'letterbox' image with lower (480i) picture resolution.
If you have a separate home theater audio system, you can connect the digital audio output connector from the HFA100 to your system to enjoy surround sound when available. You will need either an optical (Toslink) or coaxial digital (SPDIF) cable (sold separately) from the HFA100 to your AV receiver.
* - Older HD-ready TVs with DVI connectors require an optional adapter to connect to the HFA100's HDMI output. These TVs will also require a separate analog audio connection from the HFA100.