Noise protection circuit

Claim 1

IN A TELEVISION RECEIVER; A VIDEO DETECTOR FOR DEVELOPING A FIRST POLARITY COMPOSITE VIDEO SIGNAL INCLUDING VIDEO COMPONENTS, SYNCHRONIZING COMPONENTS HAVING MAGNITUDES GREATER THAN SAID VIDEO COMPONENTS AND FORTUITOUS NOISE COMPONENTS EXCEEDING THE MAGNITUDE OF SAID SYNCHRONIZING COMPONENTS; A TRANSISTOR AMPLIFIER FOR AMPLIFYING SAID COMPOSITE VIDEO SIGNAL; MEANS INCLUDING AN EMITTER RESISTOR IN SAID TRANSISTOR AMPLIFIER VIDEO SIGNAL A SECOND POLARITY REPLICA OF SAID COMPOSITE VIDEO SIGNAL; MEANS INCLUDING A COLLECTOR RESISTOR IN SAID TRANSISTOR AMPLIFIER FOR DEVELOPING A FIRST POLARITY REPLICA OF SAID COMPOSITE SIGNAL; ADDITIONAL MEANS FOR FURTHER AMPLIFYING SAID FIRST POLARITY ORIENTED REPLICA; A TRANSISTOR SWITCH HAVING AN INPUT CIRCUIT AND AN OUTPUT CIRCUIT; NETWORK MEANS INTERPOSED BETWEEN SAID COLLECTOR RESISTOR AND THE INPUT CIRCUIT OF SAID TRANSISTOR SWITCH FOR MAINTAINING SAID TRANSISTOR SWITCH IN AN "OFF" CONDITION EXCEPT DURING OCCURRENCE OF SAID NOISE COMPONENTS, THE OUTPUT CIRCUIT OF SAID TRANSISTOR SWITCH DEVELOPING A LARGE FIRST POLARITY POTENTIAL UPONS SAID SWITCH BEING DRIVEN INTO AN "ON" CONDITION, SAID TRANSISTOR DRAWING SUBSTANTIALLY FULL COLLECTOR SATURATION CURRENT RESPONSIVE TO SAID FORTUITOUS NOISE COMPONENTS HAVING MAGNITUDES EXCEEDING A CERTAIN LEVEL; A COMMON JUNCTION COUPLING THE OUTPUT OF SAID TRANSISTOR SWITCH WITH THE OUTPUT OF SAID ADDITIONAL MEANS; AND SEPARATING MEANS COUPLED TO SAID COMMON JUNCTION FOR SEPARATING SAID SYNCHRONIZING COMPONENTS FROM SAID VIDEO COMPONENTS, WHEREBY SAID SEPARATING MEANS IS DISABLED WHEN SAID TRANSISTOR SWITCH IS IN AN "ON" CONDITION TO INSURE THAT ONY SEPARATED REFERENCE COMPONENTS APPEAR IN THE OUTPUT OF SAID SEPARATING MEANS.