Automatic adjustment of transversal filter so that received pulse is corrected to conform with standardized shape

Claim 1

APPARATUS FOR ADJUSTING THE TRANSMISSION CHARACTERISTICS OF A TRANSVERSAL FILTER HAVING A PLURALITY OF ADJUSTABLE MULTIPLIERS DETERMINING THE TRANSMISSION CHARACTERISTICS OF SAID FILTER, AN INPUT TERMINAL, AND AN OUTPUT TERMINAL COMPRISING A SOURCE OF PERIODIC SIGNALS CONNECTED TO SAID INPUT TERMINAL, MEANS FOR DERIVING SAMPLES AT DIFFERENT POINTS OF THE WAVE FROM ACTUALLY APPEARING AT SAID OUTPUT TERMINAL, SAID SAMPLES BEING EQUALIN NUMBER TO THE NUMBER OF MULTIPLIERS ON SAID FILTER, A SOURCE OF REFERENCE SIGNALS THE VALUES OF WHICH DEFINE A SPECIFIED WAVE FORM, SAID REFERENCE SIGNALS BEING EQUAL IN NUMBER TO THE NUMBER OF MULTIPLIERS, AND MEANS RESPONSIVE TO THE DIFFERENCE IN VALUE BETWEEN EACH SAMPLE AND A CORRESPONDING REFERENCE SIGNAL FOR ADJUSTING ONE OF SAID MULTIPLIERS TO CHANGE THE FILTER TRANSMISSION CHARACTERISTIC TOWARD A CONDITION THAT RESULTS IN COINCIDENCE OF SAID ACTUAL WAVE FORM WITH SAID SPECIFIED WAVE FORM.