About.high-Definition; Types.of.tv.broadcasts - DirecTV HD DVR User Manual

About High-Definition
This section describes HD, and how it differs from regular TV, including helpful information about high-
definition and your DIRECTV Plus HD DVR.
Types of TV Broadcasts
Analog TV is the type of TV broadcast you may be most familiar with. If you get your broadcasts via a
standard off-air antenna, it's the type you receive, and most broadcasts from local cable companies are ana-
log as well.
Digital TV is a newer system for broadcasting TV signals delivering higher quality audio and video.
"Digital TV" refers to a television that can receive and display digital images. Following are terms you
might see used regarding Digital TV broadcasts. Although your DIRECTV Plus HD DVR is a "true" HD
receiver, the type of TV or monitor you plug it into (SD, ED, or HD) can affect the resolution of the TV
picture you see. See "Resolutions and Interlacing" on page 79, for an explanation of display resolutions.
SD (standard definition) is digital TV that offers a picture quality that is better than older analog
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televisions. SDTV displays images at a resolution of 480i.
ED (enhanced definition) is digital TV that can display a higher resolution picture than SDTV. An
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EDTV can display at 480i or 480p.
HD (high definition) is digital TV that can provide the highest quality picture, at resolutions 1080i,
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720p, 480p, or 480i.
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TIP
You can find additional
information and the latest
updates at DIRECTV.com