Communication receiver with noise blanking

Claim 1

IN A COMMUNICATION RECEIVER THE COMBINATION COMPRISING A SIGNAL TRANSMISSION PATH HAVING A PLURALITY OF STAGES FOR AMPLIFYING, CONVERTING, AND DETECTING THE RECEIVED SIGNAL AND FOR REPRODUCING THE RETRIEVED INTELLIGENCE OBTAINED AT THE OUTPUT OF THE DETECTING STAGE, CIRCUIT MEANS FOR INTERRUPTING TRANSMISSION IN SAID PATH TO PREVENT TRANSMISSION OF NOISE IMPULSES INCLUDING MEANS TO DETECT SUCH NOISE IMPULSES, MEANS RESPONSIVE TO SAID DETECTED IMPULSES TO FORM DISCRETE CONTROL PULSES, MEANS TO APPLY SAID PULSES TO AT LEAST ONE OF THE STAGES OF SAID TRANSMISSION PATH TO VARY THE CONDUCTION THEREOF FOR THE DURATION OF SAID DISCRETE CONTROL PULSES THEREBY TO PREVENT PASSAGE OF SAID NOISE IMPULSES, AND MEANS FOR DISABLING SAID INTERRUPTING CIRCUIT IN RESPONSE TO THE CHANGE IN OPERATING CONDITIONS AT SAID INTERRUPTED STAGE WHENEVER THE RATE AT WHICH SAID STAGE IS INTERRUPTED EXCEEDS A PREDETERMINED LEVEL, SAID LAST NAMED MEANS INCLUDING MEANS FOR SENSING THE CHANGE IN OPERATING PARAMETERS AT SAID INTERRUPTED STAGE IN RESPONSE TO EACH PULSE TO PRODUCE A CONTROL SIGNAL PROPORTIONAL TO THE RATE OF INTERRUPTION, MEANS COUPLING SAID CONTROL SIGNAL TO SAID INTERRUPTING CIRCUIT TO DISABLE SAID CIRCUIT WHEN SAID CONTROL SIGNALE EXCEEDS A PREDETERMINED LEVEL.