Impulse noise blanker for am radios

Claim 1

IN AN AMPLITUDE MODULATION RECEIVER FOR TRANSLATING A RECEIVED CARRIER WAVE SIGNAL WHICH MAY BE ACCOMPANIED BY BURSTS OF IMPULSE NOISE DISTURBANCES, WHICH RECEIVER INCLUDES FIRST AND SECOND SIGNAL TRANSLATING PORTION, AND AN INPUT PORTION FOR APPLYING RECEIVED SIGNALS THERETO, WITH SAID FIRST PORTION HAVING A SIGNAL TRANSLATING STAGE ADAPTED TO BE INTERRUPTED BY THE APPLICATION OF BLANKING PULSES THERETO AND SAID SECOND PORTION HAVING A SIGNAL TRANSLATING STAGE ADAPTED TO CONTROL THE LEVEL OF THE TRANSLATED SIGNAL IN RESPONSE TO APPLICATION OF A GAIN CONTROL SIGNAL THERETO, AN IMPULSE NOISE BLANKING SYSTEM INCLUDING IN COMBINATION, MEANS COUPLED TO SAID INPUT PORTION FOR PROVIDING BLANKING PULSES IN RESPONSE TO NOISE IMPULSES SUPERIMPOSED ON SAID CARRIER WAVE SIGNAL, MEANS FOR APPLYING SAID BLANKING PULSES TO SAID SIGNAL TRANSLATING STAGE IN SAID FIRST RECEIVER PORTION, PULSE INTEGRATION MEANS FOR PROVIDING A CONTROL SIGNAL OF A DURATION CORRESPONDING TO THE DURATION OF SAID BURSTS OF IMPULSE NOISE AND AN AMPLITUDE PROPORTIONAL TO THE NUMBER OF BLANKING PULSES PROVIDED DURING SAID BURSTS OF IMPULSE NOISE, AND CIRCUIT MEANS FOR APPLYING SAID CONTROL SIGNAL TO SAID SIGNAL TRANSLATING STAGE OF SAID SECOND RECEIVER PORTON, WHEREBY SAID CONTROL SIGNAL INCREASES THE LEVEL OF SAID TRANSLATED SIGNAL TO COMPENSATE FOR REDUCTION IN AVERAGE AMPLITUDE THEREOF CAUSED BY APPLICATION OF SAID BLANKING PULSES TO THE SIGNAL TRANSLATING STAGE OF SAID FIRST RECEIVER PORTION.