DISPLAY DEVICE OF COLOR TELEVISION SIGNAL

PURPOSE:To make a color of the entire picture of a color television receiver variable by changing the frequency characteristic of a low frequency filter circuit in response to a phase control signal to change only the phase of an output signal of an adder circuit to its input signal without changing its amplitude. CONSTITUTION:An input signal Vs is fed to a transistor (TR) Q2 via a TRQ3 and a capacitor C, extracted from a collector of the TRQ2 in opposite phase to a signal from the TRQ1 and added. In applying a phase control voltage of a level in response to the phase variable amount from a control voltage generating circuit 4, an emitter current of the TRQ3 is changed to control the cut-off frequency of a low pass filter formed substantially. Thus, in varying the phase of an output signal V0' in the range of 0 deg.-+360 deg., a color composite signal corresponding to various colors is extracted from a color composite signal generating circuit 5 and displayed on a color television receiver 6.