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High Definition refers to a new way of sending programming information over the airwaves and into your TV. There
are two types of TV display formats available. One is ATSC format, which originated from the Advanced Television
Systems Committee. The other is NTSC format, which is named for the National Television System Committee. What
makes your High Definition Television (HDTV) special is that it has tuners capable of receiving several types of
signals: analog (in NTSC format) and digital (in ATSC format), cable (in NTSC and ATSC formats), and digital satellite
and high definition satellite (coming from DIRECTV if you subscribe to DIRECTV
® programming † ). This TV makes
receiving all types of signals seamless. Below is an example of how your HDTV can receive the different types of
signals.
So why is it called High Definition? Definition—commonly called resolution—refers to the sharpness of the image
and is determined by the number of dots, or pixels, your screen uses to create the image. The more pixels the sharper
the image. An HDTV normally has either 1080 or 720 rows and over 1,000 columns of pixels. This results in a
display of over one million pixels. Your HDTV also has a wide screen, or “wide aspect ratio” of 16:9 as opposed to
the common 4:3 ratio. It is normally capable of displaying both interlaced images (like today’s analog TVs) and
progressive images (like a computer monitor).
What this all means is that while digital broadcasting will bring many new possibilities, only people with HDTVs like
yours will actually be capable of realizing many of them. A wide aspect ratio, one million pixel resolution, CD-
quality audio with Dolby Digital surround sound, and improved interactivity are features of many digital broadcasts,
and your HDTV will help bring it all into your home.
SATELLITE
DISH ANTENNA*
TERRESTRIAL
ANTENNA
DIRECTV
SATELLITE
TOWER SENDING
ANALOG AND/OR
OR
DIRECTV HD
SATELLITE
Parts of a Complete High Definition System
TERRESTRIAL
ANTENNA
HDTV
CABLE TV
DIGITAL SIGNALS
† Receipt of DIRECTV programming is subject to the terms of the DIRECTV Customer Agreement, a copy is provided with your first
billing statement. DIRECTV and DIRECTVis a trademark of DIRECTV, Inc., a unit of Hughes Electronics Corp., and is used with
permission.
* The appearance of your satellite dish antenna may differ from that shown here. If your satellite dish antenna is round instead of oval,
you can receive programming from only one DIRECTV satellite.
Welcome to HDTV