Analogue to digital converter and counter

Claim 1

MEANS FOR DETECTING THE POSITION OF A ROTARY MEMBER COMPRISING: A FIRST MEMBER AND A SECOND MEMBER MOUNTED TO ROTATE RELATIVE TO ONE ANOTHER IN SYNCHRONISM WITH SAID ROTARY MEMBER; SAID FIRST MEMBER HAVING A PLURALITY OF CIRCUMFERENTIALLY EQUI-SPACED INDICIA, AND SAID SECOND MEMBER HAVING A FIRST INDEX AND A SECOND INDEX POSITIONED TO REGISTER WITH SAID INDICIA AND BEING MUTUALLY PHASE-DISPLACED 90* RELATIVE TO THE REPETITIVE SPACING OF SAID INDICIA; FIRST SENSING MEANS COUPLED TO SAID INDICIA OF SAID FIRST MEMBER AND TO SAID FIRST INDEX OF SAID SECOND MEMBER FOR PRODUCING A FIRST PERIODIC ELECTRICAL SIGNAL; FIRST INVERTER MEANS COUPLED TO SAID FIRST SENSING MEANS FOR PRODUCING A SECOND PERIODIC ELECTRICAL SIGNAL IN PHASE OPPOSITION TO SAID FIRST SIGNAL; SECOND SENSING MEANS COUPLED TO SAID INDICIA OF SAID FIRST MEMBER AND TO SAID SECOND INDEX OF SAID SECOND MEMBER FOR PRODUCING A THIRD PERIODIC ELECTRICAL SIGNAL PHASE DISPLACED 90* FROM SAID FIRST PERIODIC ELECTRICAL SIGNAL; SECOND INVERTER MEANS COUPLED TO SAID SECOND SENSING MEANS FOR PRODUCING A FOURTH PERIODIC ELECTRICAL SIGNAL IN PHASE OPPOSITION TO SAID THIRD SIGNAL; BINARY COUNTER CIRCUIT MEANS HAVING A PAIR OF INPUT TERMINALS, A FIRST FOR RECEIVING FORWARD COUNTING PULSES TO CAUSE SAID COUNTER TO COUNT UP AND SECOND FOR RECEIVING REVERSE COUNTING PULSES TO CAUSE SAID COUNTER TO COUNT DOWN; FIRST CONTROL CIRCUITRY COUPLED TO SAID FIRST AND SECOND SENSING MEANS AND TO SAID FIRST AND SECOND INVERTER MEANS FOR PRODUCING A FIRST SERIES OF PULSES ONLY WHEN THE RELATIVE ROTATION OF SAID FIRST AND SECOND MEMBERS IS IN A FORWARD DIRECTION AND COUPLED TO SAID FIRST INPUT TERMINAL OF SAID BINARY COUNTER CIRCUIT MEANS FOR APPLYING SAID FIRST SERIES OF PULSES THERETO; AND SECOND CONTROL CIRCUITRY COUPLED TO SAID FIRST AND SECOND SENSING MEANS AND TO SAID FIRST AND SECOND INVERTER MEANS FOR PRODUCING A SECOND SERIES OF PULSES ONLY WHEN THE RELATIVE ROTATION OF SAID FIRST AND SECOND MEMBERS IS IN A REVERSE DIRECTION AND COUPLED TO SAID SECOND INPUT TERMINAL OF SAID BINARY COUNTER CIRCUIT MEANS FOR APPLYING SAID SECOND SERIES OF PULSES THERETO.