Receiver having automatic gain control voltage determined by burst during color reception

Claim 1

IN A TELEVISION RECEIVER INCLUDING AN IMAGE REPRODUCING DEVICE AND ADAPTED TO RECEIVE A COLOR TELEVISION SIGNAL, SAID COLOR SIGNAL INCLUDING A LUMINANCE VIDEO SIGNAL COMPONENT, A CHROMINANCE VIDEO SIGNAL COMPONENT IN THE FORM OF A PHASE AND AMPLITUDE MODULATED SUBCARRIER WAVE OF A GIVEN FREQUENCY, DEFLECTION SYNCHRONIZING PULSES AND COLOR SYNCHRONIZING BURSTS COMPRISING SEVERAL CYCLES OF SAID SUBCARRIER WAVE FREQUENCY AND HAVING A PREDETERMINED AMPLITUDE RELATIONSHIP TO THE AMPLITUDE OF SAID DEFLECTION SYNCHRONIZING PULSES, THE COMBINATION COMPRISING: A COMMON VARIABLE GAIN AMPLIFIER FOR INDISCRIMINATELY AMPLIFYING SAID LUMINANCE AND CHROMINANCE VIDEO SIGNAL COMPONENTS, SAID DEFLECTION PULSES AND SAID COLOR BURSTS; A LUMINANCE SIGNAL CHANNEL INCLUDING A LUMINANCE VIDEO SIGNAL VARIABLE GAIN AMPLIFIER FOR AMPLIFYING SUBSTANTIALLY ONLY SAID LUMINANCE VIDEO SIGNAL COMPONENT AND SAID DEFLECTION PULSES; A CHROMINANCE SIGNAL CHANNEL INCLUDING A COLOR SYNCHRONIZING BURST SEPARATOR; AN AUTOMATIC GAIN CONTROL DETECTOR OPERABLE TO PRODUCE A GAIN CONTROLLING SIGNAL; MEANS FOR IMPRESSING SAID GAIN CONTROLLING SIGNAL UPON SAID COMMON AMPLIFIER TO CONTROL ITS GAIN; AN AUTOMATIC LUMINANCE CONTROL DETECTOR CONNECTED TO THE OUTPUT OF SAID LUMINANCE VIDEO SIGNAL AMPLIFIER AND OPERABLE TO PRODUCE A LUMINANCE CONTROLLING SIGNAL IN RESPONSE TO THE AMPLITUDE OF SAID DEFLECTION PULSES; MEANS FOR IMPRESSING SAID LUMINANCE CONTROLLING SIGNAL UPON SAID LUMINANCE VIDEO SIGNAL AMPLIFIER TO CONTROL ITS GAIN; AND MEANS TO CONNECT SAID AUTOMATIC GAIN CONTROL DETECTOR TO SAID BURST SEPARATOR TO RENDER SAID AUTOMATIC GAIN DETECTOR RESPONSIVE TO THE AMPLITUDE OF SAID BURSTS.