Patent ID: 7321402

Claim:
An apparatus including circuitry for converting a Y-Pb-Pr component video signal to a R-G-B component video signal, comprising: first, second and third input signal electrodes to convey a luminance component video (Y) signal, a blue color difference component video (Pb) signal and a red color difference component video (Pr) signal, respectively; first, second and third output signal electrodes to convey a red component video (R) signal, a green component video (G) signal and a blue component video (B) signal, respectively; first signal decoding circuitry including a first shared scaling circuit and coupled between said first and third input signal electrodes and said first output signal electrode to decode said Y and Pr signals jointly via said first shared scaling circuit and provide said R signal; second signal decoding circuitry including a second shared scaling circuit and coupled between said first, second and third input signal electrodes and said second output signal electrode to decode said Y, Pb and Pr signals jointly via said second shared scaling circuit and provide said G signal; and third signal decoding circuitry including a third shared scaling circuit and coupled between said first and second input signal electrodes and said third output signal electrode to decode said Y and Pb signals jointly via said third shared scaling circuit and provide said B signal.