Arrangement for reducing errors resulting from signal faults or omissions

Claim 1

IN A SYSTEM FOR DEVELOPING A PLURALITY OF ALTERNATING ELECTRICAL SIGNALS FROM A SINGLE SOURCE, SAID PLURALITY OF ALTERNATING ELECTRICAL SIGNALS HAVING SIMILAR ELECTRICAL QUALITIES AND A PREDETERMINED PHASE RELATIONSHIP; SAID SYSTEM HAVING MEANS FOR INTEGRATING SQUARE WAVE SIGNALS, WAVE SHAPING MEANS COUPLED TO SAID INTEGRATING MEANS FOR FORMING AND INTEGRATED SIGNALS INTO DESIRED SIGNALS, AND MEANS INCLUDING A PHASE SHIFT DEVICE AND A TRANSFORMER COUPLED TO SAID WAVE-SHAPING MEANS FOR DERIVING AT LEAST TWO OUTPUT SIGNALS HAVING SAID PREDETERMINED PHASE RELATIONSHIP; THE IMPROVEMENT COMPRISING SQUARE WAVE PRODUCING MEANS ADAPTED TO BE COUPLED TO SAID SOURCE AND TO SAID INTEGRATING MEANS, SAID SQUARE WAVE PRODUCING MEANS BEING CAPABLE OF PRODUCING SAID SQUARE WAVE SIGNALS NORMALLY IN RESPONSE TO SAID SOURCE SIGNALS AND FURTHER BEING CAPABLE OF PRODUCING SQUARE WAVE SIGNALS OF A PREDERTERMINED FREQUENCY IN THE ABSENCE OF SAID SOURCE SIGNALS.