Jitter-free distance measuring equipment

Claim 1

A DEVICE FOR DECODING AN INPUT PULSE PAIR AND FOR GENERATING A REPLY PULSE PAIR FROM SINGLE PULSES OF THE INPUT PULSE PAIR COMPRISING: (A) A TIMING DELAY LINE FOR DELAYING THE INPUT PULSE PAIR HAVING AN INPUT AND PLURAL OUTPUTS AT SPACED PREDETERMINED TIME DELAY INTERVALS; (B) AN ENABLING DELAY LINE HAVING AN INPUT AND PLURAL OUTPUTS AT SPACED PREDETERMINED TIME DELAY INTERVALS; (C) DETECTING AND PULSE GENERATING MEANS FOR PASSING A SINGLE PULSE TO THE ENABLING DELAY LINE INPUT UPON A COINCIDENTAL RELATIONSHIP EXISTING BETWEEN THE INPUT PULSE PAIR AND THE DELAY PULSE PAIR, SAID DETECTING AND PULSE GENERATING MEANS RESPONSIVE TO THE TIMING DELAY LINE INPUT AND A FIRST ONE OF SAID PLURAL TIMING DELAY LINE OUTPUTS; (D) PULSE GENERATING AND GATING MEANS FOR PRODUCING THE FIRST ONE OF A REPLY PULSE PAIR UPON A COINCIDENTAL RELATIONSHIP EXISTING BETWEEN A FIRST ONE OF SAID PLURAL ENABLING DELAY LINE OUTPUTS AND A SECOND ONE OF SAID PLURAL TIMING DELAY LINE OUTPUTS, SAID PULSE GENERATING AND GATING MEANS RESPONSIVE TO A FIRST ONE OF SAID PLURAL ENABLING DELAY LINE OUTPUTS AND A SECOND ONE OF SAID PLURAL TIMING DELAY LINE OUTPUTS; (E) PULSE GENERATING AND GATING MEANS FOR PRODUCING THE SECOND HALF OF A REPLY PULSE PAIR UPON A COINCIDENTAL RELATIONSHIP EXISTING BETWEEN A SECOND ONE OF SAID PLURAL ENABLING DELAY LINE OUTPUTS AND THE THIRD ONE OF SAID PLURAL TIMING DELAY LINE OUTPUTS, SAID PULSE GENERATING AND GATING MEANS RESPONSIVE TO SAID SECOND ONE OF SAID PLURAL ENABLING DELAY LINE OUTPUTS AND SAID THIRD ONE OF SAID PLURAL TIMING DELAY LINE OUTPUTS.

Claim 2

A DEVICE FOR DECODING AN INPUT PULSE PAIR AND FOR GENERATING A REPLY PULSE PAIR FROM SINGLE PULSES OF THE INPUT PULSE PAIR COMPRISING: (A) A TIMING DELAY LINE FOR DELAYING THE INPUT PULSE PAIR HAVING AN INPUT AND PLURAL OUTPUTS AT SPACED PREDETERMINED TIME DELAY INTERVALS; (B) AN ENABLING DELAY LINE HAVING AN INPUT AND PLURAL OUTPUTS AT SPACED PREDETERMINED TIME DELAY INTERVALS; (C) DETECTING AND PULSE GENERATING MEANS FOR PASSING A SINGLE PULSE TO THE ENABLING DELAY LINE INPUT UPON A COINCIDENTAL RELATIONSHIP EXISTING BETWEEN THE INPUT PULSE PAIR AND THE DELAY PULSE PAIR, SAID DETECTING AND PULSE GENERATING MEANS RESPONSIVE TO THE TIMING DELAY LINE INPUT AND A FIRST ONE OF SAID PLURAL TIMING DELAY LINE OUTPUTS; (D) PULSE GENERATING AND GATING MEANS FOR PRODUCING THE FIRST ONE OF A REPLY PULSE PAIR UPON A COINCIDENTAL RELATIONSHIP EXISTING BETWEEN A FIRST ONE OF SAID PLURAL ENABLING DELAY LINE OUTPUTS AND A SECOND ONE OF SAID PLURAL TIMING DELAY LINE OUTPUTS, SAID PULSE GENERATING AND GATING MEANS RESPONSIVE TO A FIRST ONE OF SAID PLURAL ENABLING DELAY LINE OUTPUTS AND A SECOND ONE OF SAID PLURAL TIMING DELAY LINE OUTPUTS; (E) PULSE GENERATING AND GATING MEANS FOR PRODUCING THE SECOND HALF OF A REPLY PULSE PAIR UPON A COINCIDENTAL RELATIONSHIP EXISTING BETWEEN A SECOND ONE OF SAID PLURAL ENABLING DELAY LINE OUTPUTS AND THE THIRD ONE OF SAID PLURAL TIMING DELAY LINE OUTPUTS, SAID PULSE GENERATING AND GATING MEANS RESPONSIVE TO SAID SECOND ONE OF SAID PLURAL ENABLING DELAY LINE OUTPUTS AND SAID THIRD ONE OF SAID PLURAL TIMING DELAY LINE OUTPUTS.