Hue and saturation control circuitry requiring single coupling capacitor

A composite color signal-processing circuit for processing a time-shared composite color signal including burst and chrominance signals at distinct time periods comprising:

• a vector signal generating circuit having an input coupled to said composite signal for generating first and second vector signals having different phases with respect to each other, said vector signal being generated during said burst signal period;
• a vector signal synthesizing means coupled to said vector signal generating circuit for controlling the relative absolute values of said first and second vector signals and for synthesizing said first and second controlled vector signals;
• a gain control circuit coupled to said composite color signal for extracting and controlling the gain of a chrominance signal from said composite color signal in response to a gate pulse;
• a common load coupled to the outputs of said vector signal synthesizing means and to said gain control circuit for combining their respective outputs;
• an AC coupling capacitor coupled to said common load for delivering an AC component of said combined outputs;
• a first phase detector coupled to said coupling capacitor for responding to said burst signal period in response to the gate pulse;
• and
• a second phase detector coupled to said AC coupling capacitor for responding to a chrominance signal in response to said gate pulse.