Wave sampling apparatus employing common potential switch

Claim 1

A CIRCUIT FOR SAMPLING AND HOLDING THE INPUT SIGNAL OF A SOURCE, WHICH COMPIRISES STORAGE MEANS HAVING FIRST AND SECOND TERMINALS, THE FIRST TERMINAL OF SAID STORAGE MEANS BEING CONNECTED TO SAID SOURCE, SWITCHING MEANS FOR CAUSING THE MOMENTARY MAGNITUDE OF SAID INPUT SIGNAL TO BE STORED IN SAID STORAGE MEANS, SAID SWITCHING MEANS BEING ACTIVATED BY A SWITCHING SIGNAL AND INTERCONNECTING THE SECOND TERMINAL OF SAID STORAGE MEANS WITH A COMMON GROUND POINT OF SAID CIRCUIT AND DIFFERENCING MEANS HAVING FIRST AND SECOND INPUT TERMINALS RESPECTIVELY CONNECTED TO THE FIRST AND SECOND TERMINAL OF SAID STORGE MEANS FOR OBTAINING, DURING THE ABSENCE OF SAID SWITCHING SIGNAL, AN OUTPUT SIGNAL PROPOTIONAL TO THE DIFFERENCE BETWEEN THE INSTANTANEOUS AMPLITUDE OF SAID INPUT SIGNAL AND THE AMPLITUDE OF THE SAMPLED SIGNAL HELD IN STORAGE AS AUGMENTED BY SAID INPUT SIGNAL.