ATSC:
NTSC:
Digital Television (DTV):
Dolby Digital:
Smart Antenna:
Advanced Television Systems Committee.
Formed to establish technical
standards for U.S. advanced television systems. Also, the name given to the
8-VSB transmission standard itself.
"National Television Systems Committee" and the name of the curr ent analog
transmission standard used in the U.S., which the committee created in 1953.
Digital TV is the umbrella term encompassing High-definition Television and
several other applications, including Standard Definition Television.
This is a digital surround sound technology used in movie theaters and upscale
home theater systems that enhances audio. Home theater components with this
technology work in conjunction with a "5.1-speaker" system (five speaker s plus a
low-frequency subwoofer) to produce true-to-life audio that draws the listener
into the onscreen action. Six discreet audio channels are used: Left, Center,
Right, Left Rear (or side), Right Rear (or side), and a subwoofer -- LFE, "low
frequency effects" -- (considered the ". 1 " as it is limited in bandwidth).
A smart antenna system combines multiple antenna elements with a signal-
processing capability to optimize its radiation and/or reception pattern
automatically in response to the signal environment.
“
”
Analog TV:
SDTV:
HDTV:
Analog technology has been in use for the past 50 years to transmit conventional
TV signals to consumers. "Standard" television broadcasts in analog TV. Analog
signals vary continuously, creating fluctuations in color, brightness and quality.
"Standard Definition Television." Digital formats that do not achieve the video
quality of HDTV, but are at least equal, or superior to, NTSC pictures. SDTV may
have either 4:3 or 16:9 aspect r atios, and it includes sur round sound. Variations
of fps (frames per second), lines of resolution, and other factors of 480p and
480i make up the 12 SDTV formats in the ATSC standard.
"High-definition Television." This is the most super ior video picture available in
Digital TV. In the U.S., the 1080i and 720p formats in a 16:9 aspect ratio are the
two acceptable HDTV formats. HDTV is a component of DTV.
5. Glos sary
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