DirecTV HR10-250 User Manual page 17

U s e f u l T e r m s
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Video, Audio, and Electronics Equipment Terms
HDTV Receiver. A high-definition television receiver decodes high-definition, enhanced-
definition, and standard-definition video signals for display on your TV. Your HD DVR
combines an HDTV receiver with a satellite receiver and a digital video recorder.
Off-Air Antenna. Any antenna used to receive standard or digital TV signals broadcast
locally is referred to in this guide as an off-air antenna.
SDTV, EDTV, and HDTV. These acronyms define three types of digital television formats:
Standard Definition, Enhanced Definition, and High Definition. SDTV is the basic digital
TV format and provides better quality than traditional, analog television. EDTV uses the
same number of lines of resolution as SDTV, but the scanning format is progressive rather
than interlaced, providing a sharper image. HDTV is the highest quality digital TV format,
offering the greatest number of scanning lines for each frame of video, which results in the
most detailed picture possible today. HDTV video can be progressive or interlaced. See
page 31 for more information about video output formats.
Digital Visual Interface (DVI). DVI describes a type of 15-pin connection found on many
high-definition TVs. DVI allows a true digital connection for video signals and other
digital information. You can connect your HD DVR to your TV's DVI jack using the
HDMI-to-DVI cable supplied with your HD DVR. Since a DVI jack accepts only video,
you will need to connect a separate cable for audio if you use this connection.
High Definition Multimedia Interface (HDMI). HDMI is an uncompressed, all-digital
audio/video interface for electronic devices such as DVD players, A/V receivers, and
high-definition TVs. HDMI improves on DVI in that it sends both high-definition video
and digital audio signals through a single cable. Like DVI, it also sends and receives
digital content protection information. (See page 79 for details.) HDMI is backward-
compatible with DVI using the supplied HDMI-to-DVI adapter cable.
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