Progressive Scanning - A system of video scanning where lines of a picture are displayed consecutively (unlike interlaced).
Comb filter - A circuit in NTSC sets that separates the color information from the brightness information.
YPrPb - Color representation requires three independent variables. CRTs - prefer red, green, and blue. Ink jet printers prefer yellow, magenta, and cyan. NTSC encodes color as luminance (brightness), hue (color), and saturation (absence of white in colors). Storage media such as DVDs prefer Y, Pr, and Pb, where Y is luminance, Pr is Y-red, and Pb is Y-blue. This is because Pr and Pb can be at lower resolution and not degrade the image noticeably, thus saving storage space.
4 - 3 - Aspect ratio of traditional NTSC TV screens, with 4 unit width by 3 unit height.
MPEG-2 - Compression standards for moving images and for audio as set by Motion Pictures Expert Group (MPEG). MPEG-2 video coding is the basis for ATSC digital television transmission in the U.S and Canada.
Dot Pitch - The distance between pixels (picture elements) in a display. In a CRT for HDTV, the dot pitch is typically 0.25 - 0.3 mm. For full resolution HDTV display approximately 1400 pixels are required across the screen.
Metadata - Informational data about the data, included in a signal's data stream.
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