For Analog Component Video we have a term and definition in Television.

Analog Component Video (Television)

Refers to a standard consisting of analog video signals transmitted on three wires, one for luminance (Y) and synchronizing, one for the red component from which is subtracted the total luminance (R-Y) causing it to represent both red and cyan, and one for the blue component from which is subtracted the total luminance (B-Y) so it represents blue and yellow. (The green component is derived by combining the three components described.) These color definitions were chosen since R-Y and B-Y tend to zero leaving just Y for a black and white picture as the color tends to black, gray, or white. It is also in order that recovering red, green,and blue is easy (R is an equal mixture of R-Y and Y) The designations Y/Pb/Pr and Y/Cb/Cr are also used to stand for analog component video where more correctly the latter is for digital video. The so called "component video" jack or jacks seen nowadays are for analog component video. See, also, Component Video.

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