AX Quad Box HD 2400, User Manual

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YPbPr
A color space used in video electronics, in particular in reference to component
video cables. YPbPr is the analog version of the YCBCR color space; the two are
numerically equivalent, but YPBPR is designed for use in analog systems whereas
YCBCR is intended for digital video. YPbPr is commonly called “component video”,
but this is a misnomer, as there are many other types of component video (mostly
RGB with sync either on green or one or two separate signals)>
YPbPr is converted from the RGB video signal, which is split into three components,
Y, PB, and PR.
* Y carries luma (brightness) and sync information.
* PB carries the difference between blue and luma (B – Y).
* PR carries the difference between red and luma (R – Y).
Sending a green signal would be redundant, as it can be derived using the blue,
red and luma information.