Color television receiver

Claim 2

A color television receiver, comprising: bandpass amplifying means for amplifying a carrier chrominance signal of a color television signal received by said receiver; detecting means connected to the output of said bandpass amplifying means for detecting a chrominance signal having a phase representing flesh tones; reCtifying means connected to the output of said detecting means for rectifying the detected chrominance signal portion having a phase representing flesh tones; and control means connected to the output of said rectifying means for controlling the gain of said bandpass amplifying means by said rectified chrominance signal portion.

Claim 3

A color television receiver according to claim 1, further comprising: burst gate means connected to said bandpass amplifying means for detecting a color burst signal in said chrominance signal portion; and adding means for adding the output of said rectifying means with a signal having an amplitude which is proportional to the amplitude of said burst signal, said adding means being connected to control the gain of said bandpass amplifying means by the output of said adding means.

Claim 4

A color television receiver according to claim 1, further comprising adding means for adding the output of said rectifying means to the carrier chrominance signal output from said bandpass amplifying means, wherein the output of said adding means is applied to control the gain of said bandpass amplifying means.

Claim 5

A color television receiver according to claim 1, wherein said detecting means comprises an auxiliary carrier wave generator for generating a continuous auxiliary carrier wave based on the color burst signal of said carrier chrominance signal, a plurality of chrominance demodulators for demodulating the carrier chrominance signal output of said bandpass amplifying means and a phase shifter for shifting the phase of the auxiliary carrier wave generated by said auxiliary carrier wave generator to a specified phase, wherein the phase shifted auxiliary carrier chrominance signal is applied to one of said chrominance demodulators to detect said chrominance signal portion having a phase representing flesh tones.

Claim 6

A color television receiver according to claim 4, further comprising further detecting means for detecting a burst signal from said carrier chrominance signal and adding means for adding a signal of an amplitude corresponding to the amplitude of the detected burst signal to the output of said one of said chrominance demodulators, wherein the output of said adding means is applied to control the gain of said bandpass amplifying means.

Claim 7

A color television receiver according to claim 1, wherein said detecting means comprises an auxiliary carrier wave generator for generating a continuous auxiliary carrier wave based on the color burst signal of said carrier chrominance signal, a plurality of chrominance demodulators for demodulating the carrier chrominance signal from said bandpass amplifier with said auxiliary carrier wave and a matrix circuit for composing output signals of said chrominance demodulators at a predetermined ratio.

Claim 8

A color television receiver according to claim 6, further comprising detecting means for detecting said color burst signal from said carrier chrominance signal and adding means for adding a signal of an amplitude corresponding to the amplitude of the detected burst signal to the output of said matrix circuit, wherein the output of said adding means is applied to control the gain of said bandpass amplifying means.

Claim 9

A color television receiver comprising first and second bandpass amplifiers for amplifying a carrier chrominance signal; detecting means for detecting a chrominance signal portion of the amplified carrier chrominance signal having a phase representing skin tones; rectifying means for rectifying the detected signal; further detecting means for detecting a burst signal in said carrier chrominance signal; an auxiliary carrier wave generator for generating a continuous auxiliary carrier wave based on said burst signal; a plurality of chrominance demodulators for demodulating the carrier chrominance signal from said second bandpass amplifier with said auxiliary carrier wave; a color killer circuit connected to said second bandpass amplifier; and control means for controlling the gain of said first bandpass amplifier by a direct current voltage having an amplitude corresponding to the amplitude of said burst signal, said control means also connected for operating said color killer circuit by said direct current voltage, wherein the output of said rectifying means is connected to control the gain of said second bandpass amplifier.

Claim 10

A color television receiver comprising first and second bandpass amplifiers for amplifying a carrier chrominance signal; detecting means for detecting a chrominance signal portion of the amplified carrier chrominance signal having a phase representing skin tones; rectifying means for rectifying the detected signal; further detecting means for detecting a burst signal in said carrier chrominance signal; an auxiliary carrier wave generator for generating a continuous auxiliary carrier wave based on said burst signal; a plurality of chrominance demodulators for demodulating the carrier chrominance signal from said second bandpass amplifier with said auxiliary carrier wave; a color killer circuit connected to said second bandpass amplifier; and control means for controlling the gain of said first bandpass amplifier by a direct current voltage having an amplitude corresponding to the amplitude of said burst signal, said control means also connected for operating said color killer circuit by said direct current voltage, wherein the output of said rectifying means is connected to control the gain of said second bandpass amplifier.