Phase modulation read out circuit

Claim 1

A CONTROL SYSTEM COMPRISING A SOURCE OF SIGNALS, A NETWORK CAPABLE OF ASSUMING A POSITIVE OR NEGATIVE CHARGE, MEANS FOR APPLYING SAID SIGNALS TO SAID CHANGING NETWORK, AN AND GATE CIRCUIT ADAPTED TO PASS OR INHIBIT SIGNALS THERETHROUGH, SAID AND GATE CIRCUIT INCLUDING FIRST AND SECOND INPUT MEANS, A CONTROL CIRCUIT CONNECTED TO SAID FIRST INPUT MEANS CAPABLE OF ASSUMING ONE OF TWO STABLE OPERATING STATES FOR CONTROLLING THE OPERATION OF SAID AND GATE CIRCUIT, MEANS FOR APPLYING SIGNALS FROM SAID SOURCE OF SIGNALS TO SAID SECOND INPUT MEANS OF SAID AND GATE CIRCUIT, A SOURCE OF SAMPLING SIGNALS, MEANS FOR APPLYING SAID SAMPLING SIGNALS TO SAID NETWORK TO DETECT THE STATE OF CHANGE THEREOF, MEANS RESPONSIVE TO THE STATE OF CHANGE OF SAID NETWORK TO PRODUCE ONE OF TWO CHARACTERISTICALLY DIFFERENT CONTROL SIGNALS WHEN A CHARGE IS PRESENT AT SAID NETWORK, AND MEANS FOR APPLYING SAID CONTROL SIGNALS TO SAID CONTROL CIRCUIT TO CONTROL THE OPERATING STATES THEREOF WHEREBY SAID AND GATE IS ENABLED TO PERMIT APPLIED SIGNALS TO PASS THERETHROUGH.