LNB - (Low Noise Block converter) - An LNB can be found at the focus point of a dish antenna. It is a low noise amplifier that also converts the signal to a lower frequency. (The original higher frequency would not travel very far in ordinary coaxial cable.)
Luminance - Component of the video signal that represents the brightness of the image.
HDTV - "High-definition Television." This is the most superior 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.
Widescreen - see 16 - 9
Baseband Video - Unmodulated analog video signal.
Video-on-Demand (VOD) - A programming library service offering the individual viewer the choice of the available content on demand. When the program is requested and confirmed (by telephone or Internet) it is then delivered to the viewer over an available channel in encrypted form. VOD services are generally arranged on a "Pay per View" basis, analogous to the cinema.
CDTV - Canadian Digital Television, a not-for-profit, government-approved body, with members from all sectors of the TV industry. CDTV is mandated to advise its members, Industry Canada and the CRTC on the roll out of DTV in Canada.
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