Transversal filter

Claim 1

A TRANSVERSAL FILTER COMPRISING A DELAY LINE, AN INPUT TERMINAL CONNECTED TO SAID DELAY LINE, A SIGNAL SOURCE HAVING AN UPPER FREQUENCY COMPONENT LIMIT CONNECTED TO SAID INPUT TERMINAL, TAPS SITUATED ALONG THE LENGTH OF SAID DELAY LINE, A UTILIZATION CIRCUIT, AND A SIGNAL MULTIPLIER CORRESPONDING TO EACH OF SAID TAPS, FOR APPLYING A FACTOR BETWEEN +1 AND -1 IN MULTIPLYING RELATION WITH THE SIGNAL APPEARING AT EACH TAP, SAID SIGNAL MULTIPLIERS EACH COMPRISING AN INPUT CIRCUIT CONNECTED TO ITS RESPECTIVE TAP AN OUTPUT CIRCUIT CONNECTED TO SAID UTILIZATION CIRCUIT, SWITCHING MEANS OPERABLE AT A RATE AT LEAST AS HIGH AS TWICE SAID UPPER FREQUENCY COMPONENT LIMIT FOR SELECTING THE POLARITY, INVERTED OR UNIVERTED, OF SIGNAL TRANSFER BETWEEN SAID INPUT CIRCUIT AND SAID OUTPUT CIRCUIT, THE DUTY CYCLE OF SAID SWITCHING MEANS DETERMINING THE MULTIPLYING FACTOR AND HENCE EXTENT OF SIGNAL TRANSFER THERETHROUGH, A BISTABLE SIGNAL SOURCE THE OUTPUT OF WHICH CONTROLS THE DUTY CYCLE OF SAID SWITCHING MEANS, A HIGH REMANENCE MAGNETIC CORE THE CONTINUITY OF WHICH IS INTERRUPTED BY AN AIR GAP, A STRIP OF SATURABLE MAGNETIC MATERIAL OF MUCH SMALLER CORSS SECTION THAN SAID CORE SITUATED TO INTERCEPT MAGNETIC FLUX FLOWING IN SAID CORE, A READ-OUT COIL ADAPTED TO PRODUCE VOLTAGE PULSES SIGNIFYING CHANGES IN STATE OF FLUX DENSITY IN SAID STRIP, SAID VOLTAGE CHANGES IN STATE OF FLUX READ-OUT COIL BEING APPLIED TO SYNCHRONIZE SAID BISTABLE DEVICE, A DRIVING COIL ADAPTED TO MAGNETIZE SAID STRIP, AND A PERIODIC SIGNAL SOURCE CONNECTED TO SAID DRIVING COIL, WHEREBY THE DURATION BETWEEN SUCCESSIVE ONES OF SAID PULSES IS A MEASURE OF THE FLUX IN SAID CORE.