Analog-to-digital converter

Claim 1

A CIRCUIT FOR OBTAINING THE ALGEBRAIC SUM OF DIGITAL INFORMATION PULSES FROM A CONTINUOUS SOURCE OF REFERENCE PULSES AND A RANDOM DIGITAL INFORMATION SOURCE COMPRISING: MEANS CONNECTED TO THE SOURCE OF REFERENCE PULSES FOR DIFFERENTIATING INFORMATION PULSES THEREFROM; A PULSE COUNTER; A DIODE ISOLATING CIRCUIT INCLUDING A FIRST DIODE POLED TO PASS PULSES OF ONE POLARITY FROM SAID DIFFERENTIATING MEANS TO SAID COUNTER; SAID ISOLATING CIRCUIT INCLUDING A SECOND DIODE POLED TO PASS PULSES FROM SAID DIFFERENTIATING MEANS OF OPPOSITE POLARITY FROM PULSES PASSED BY SAID FIRST DIODE; AND A TRANSMISSION GATE; SAID SECOND DIODE CONNECTED AS AN ENABLING INPUT TO SAID TRANSMISSION GATE; THE SOURCE OF RANDOM PULSES CONNECTED AS A SECOND ENABLING INPUT TO SAID TRANSMISSION GATE; THE OUTPUT OF SAID TRANSMISSION GATE CONNECTED AS AN INFORMATION INPUT TO SAID PULSE COUNTER; WHEREBY INFORMATION FROM SAID REFERENCE SOURCE INTRODUCED INTO SAID COUNTER AT A TIME INTERVAL DETERMINED BY THE VOLTAGE EXCURSION OF ONE POLARITY OF THE DIFFERENTIATED REFERENCE SOURCE PULSE AND INFORMATION FROM THE RANDOM SOURCE IS INTRODUCED INTO THE COUNTER AT A TIME INTERVAL DETERMINED BY THE VOLTAGE EXCURSION OF OPPOSITE POLARITY OF THE DIFFERENTIATED REFERENCE SOURCE PULSE.