Whats the difference between the DTV component video standards?
There are two different ways to connect an analog component video signal. The first, identified as “YPbPr”, is a three-wire connection. It consists of one luminance signal marked “Y” and two color difference signals marked “Pb” and “Pr”. The Y input is typically colored green, while the Pb and Pr jacks are colored blue and red, respectively. The second standard is identified as “RGB”. This can be a three-wire, four-wire, or five-wire connection, and is similar to that used by your computer monitor. In the four-wire RGBS and five-wire RGBHV formats, there are three separate color signals – red, green, and blue – and either one or two sync signals. Most set-top receivers support both YPbPr and RGB output, although not at the same time.