Glossary
analog signal
aspect ratio
A signaling method that usescontinuous changes in the amplitude or frequencyof an
electronictransmission to convey information.
Refersto the ratiobetween the width and height ofthe screen. ThisTV hasa 16:9
(widescreen)aspect ratio, asopposed to a 4:3 aspect ratio.
4:3 aspect ratio 16:9 aspect ratio
component video Component video is sent through three cables: two color shade(chrominance) signalsand one
brightness (luminance)signal. Component video achievesgreater color accuracythan
compositevideo or S VIDEOby splitting chrominance into two separateportions.
composite video
digital television (DTV)
National Television System
Committee (NTSC)
RF
S VIDEO
VHF/UHF
480i
480p
720p
1080i
Compositevideo is sentthrough a single cable. Compositevideo combinesthe color shade
(chrominance)and brightness(luminance) information into one video signal.
A new technology for transmitting and receiving broadcast television signals. DTVprovides
higher resolution and improved sound quality over analog television.
A unit of the Federal Communications Commission,Washington, DC,that establishes
television standardsin the UnitedStates, suchas NTSCColor,the standardused in thisTV.
RadioFrequency.That partof the frequencyspectrum in which it ispossibleto radiate
(transmit) electromagnetic waves.
SVIDEOrequires a single cable, which carries the brightness(luminance) and color
(chrominance)signals of the picture separately.S VIDEOprovides better resolution than
compositevideo, which carries the signals together.
VHF(Very HighFrequency)is the partof the radio spectrumfrom 30 to 300 megahertz.UHF
(Ultra High Frequency)isthe part of the radiospectrum from 300to 3,000 megahertz.
Provides480 lines of resolution. Displaysimages using interlacedscanning, which first
transmits all the odd lineson the TVscreen and then the even lines.
Provides480 linesof resolution. Displays imagesusing progressivescanning, which transmits
eachline from top to bottom.
Provides720 lines of resolution. Displaysimages using progressivescanning, which transmits
eachline from top to bottom.
Provides1080 linesof resolution. Displays imagesusing interlaced scanning, which first
transmits all the odd lines on the TV screenand then the even lines. I080i is one of the
formats usedby HDTV(High Definition TV).
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