Analog TV: Today's TV system using radio frequency waves to transmit and display pictures and sound.
Aspect Ratio(4x3):Traditional TV"aspect ratio" , that is , the screen's width as compared to its height. For
example, a "32 inch TV screen" would be 25_inches wide and 19 inches tall.
Aspect Ratio(16x9):"Wide screen TV" aspect ratio, which is more like a movie screen than a traditional
TV. For example, a "32 inch TV screen" would be 28 inches wide and 16 inches tall.
Digital TV(DTV) :Television delivered and displayed using radio frequency waves that contain
information that is digitally encoded for improved quality and efficiency.
Enhanced Definition TV (EDTV): A better digital television transmission than SDTV with at least 480p, in
a 16x9 or 4x3 display and Dolby digital surround sound. 480p is the quality used by most DVD players.
EDTV provides 300-400,,000 pixels.
HDTV Monitor (sometimes called HDTV Ready): A set that can display HDTV programming if you have a
separate HDTV tuner, HD Cable Set-Top Box or HD Satellite Set-Top -Box Receiver.
HDTV Tuner(also decoder, receiver, set-top box): A device capable of receiving and outputting HDTV
signals for display. It may be stand-alone or integrated in the set.
High-Definition Television(HDTV): The best quality digital picture, wide screen (16x9) display with at
least 720 progressively scanned lines(720p) or 1080 interlaced lines (1080 i) and Dolby digital surround
sound. HDTV provides 900,000-2.1 million pixels.
Integrated HDTV: An HDTV that has the digital tuner built into the set. It does not need a separate set-top
box to receive over -the -air DTV signals. progressively scanned lines (480p) in 16x9 or 4x3 format. 480
interlaced (480i) is the quality of today's analog TV system. SDTV provides 150-300,000 pixels.
Interlace Scan: A way to scan vertical lines onto a TV picture by scanning all the odd lines first, then filling
in the even lines(this happens instantaneously).
Plug-and-Play or Digital Cable Ready: A DTV or other device for digital cable customers that plugs
directly into the cable jack and does not require a separate set-top box. Plug and Play TV owners must
obtain a Cable CARD from their cable company in order to view scrambled programming services.
Progressive Scan: A way to scan vertical lines onto a TV picture by scanning all the lines consecutively
(progressively).
Standard Definition TV (SDTV): Basic digital television transmission that may be displayed with fewer
than 480.
Glossary-Standard Definitions
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