NTSC - National Television Systems Committee. The organisation that created the standards for production and broadcasting of analog color television programming in Canada and the United States. The term is widely used to mean a composite analog television signal.
Pixel - Pixel is actually two words jammed together _ picture and element. A pixel is a tiny sample of video information, the "little squares" that make up an overall picture.
Downconvert - The process which reduces the number of pixels in the scanning format used to represent an image, so that it may be reproduced on a display of lower resolution, such as a conventional television. For example, an HDTV image may be downconverted to an SDTV or NTSC image, but in the conversion significant detail information may be lost.
Digital - Digital refers to the circuitry in which data-carrying signals are restricted to one of two voltage levels, corresponding to logic 1 or 0.
Fps - Frames per Second. To give the illusion of motion, television actually transmits a series of snapshot pictures referred to as frames. Increasing the frame rate improves motion smoothness and may reduce flicker in some displays. In Canada both analog and digital television transmits 30 Fps.
STB - (Set Top Box) - These include satellite receivers, cable TV receivers, OTA receivers, and various recording devices.
8VSB modulation technique - (8-level vestigial sideband) - DTV stations in the U.S. use 8VSB modulation. This is an AM mode wherein the carrier is multiplied by an 8-level digital signal, and then a filter is used to remove all but the carrier and 6 MHz of the upper sideband. ("8VSB" is often used as a synonym for OTA.)
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