Character identification systems with two position detection circuits

Claim 1

IN A SYSTEM FOR PROVIDING AN ELECTRICAL IDENTIFICATION OF RECORDED SYMBOLS, APPARATUS COMPRISING MEANS FOR GENERATING AN ELECTRICAL WAVE SHAPE CHARACTERISTIC OF A SYMBOL TO BE IDENTIFIED; A PLURALITY OF SUMMING NETWORKS , ONE FOR EACH DIFFERENT SYMBOL TO BE IDENTIFIED; A DELAY LINE FOR RECEIVING SAID WAVE SHAPE AND HAVING A PLUARLITY OF TAPS THEREALONG FOR DELIVERING A PLURALITY OF DISCRETE SIGNAL SAMPLES OF SAID WAVE SHAPE TO ALL OF SAID SUMMING NETWORKS; AND MEANS FOR DETECTING WHICH OF SAID SUMMING NETWORKS HAS THE GREATEST OUTPUT SIGNAL DURING A TIME SAID WAVE SHAPE OCCUPIES A REFERENCE POSITION IN SAID DELAY LINE DEFINED WHEN THE LEADING EDGE OF SAID WAVE SHAPE IS ADJACENT TO A SAMPLING REFERENCES TAP OF SAID DELAY LINE AND PROVIDING AN OUTPUT ELECTRICALLY IDENTIFYING SAID SYMBOL, SAID MEANS FOR DETECTING AND PROVIDING INCLUDING A PLURALITY OF MEANS FOR DETECTING AND STORING THE PEAK AMPLITUDE OF A VOLTAGE APPLIED THERETO, EACH OF WHICH IS COUPLED TO RECEIVE THE OUTPUT OF A DIFFERENT ONE OF SAID SUMMING NETWORKS, A PLURALITY OF GATE MEANS , A DIFFERENT ONE OF WHICH IS COUPLED TO A DIFFERENT ONE OF SAID MEANS FOR DETECTING AND STORING, MEANS RESPONSIVE TO THE LEADING EDGE OF SAID WAVE SHAPE FOR DEVELOPING A FIRST SIGNAL INDICATING THAT THE LEADING EDGE OF SAID WAVE SHAPE IS AT A POSITION IN SAID DELAY LINE AT A TIMING REFERENCE TAP PRIOR TO SAID SAMPLING REFERENCE TAP, MEANS RESPONSIVE TO BOTH THE LEADING EDGE OF SAID WAVE SHAPE AND SIGNAL SAMPLES OF SAID WAVE SHAPE DELIVERED THERETO FROM ALL TAPS OF SAID DELAY LINE PRIOR