Identification systems
First Claim
1. A SYSTEM FOR RECORDING THE IDENTITY OF A MOVING OBJECT AS IT PASSES A FIXED POSITION ADJACENT TO ITS PATH OF TRAVEL, SAID SYSTEM COMPRISING A CONTROL MEANS LOCATED AT SAID FIXED POSITION, A TRANSPONDER UNIT ON THE OBJECT, SAID TRANSPONDER UNIT BEING ARRANGED TO EMIT A CODED OUTPUT MEANS, THE CONTROL MEANS COMPRISING MEANS FOR CONTROL MEANS, THE CONTROL MEANS COMPRISING MEANS FOR EMITTING A TRANSPONDER-INITIATING SIGNAL AND PICK-UP AND RECORDING MEANS FOR RECEIVING AND RECORDING THE CODED TRANSPONDER OUTPUT SIGNAL, AND THE TRANSPONDER UNIT INCLUDING OSCILLATOR MEANS FOR PRODUCING OSCILLATIONS OF TWO DIFFERENT FREQUENCIES AND A SELECTOR DEVICE OPERABLE IN RESPONSE TO THE TRANSPONDER-INITIATING SIGNAL FROM THE CONTROL MEANS TO ACTUATE THE OSCILLATOR MEANS IN A SELECTED ORDER TO PRODUCE PULSES OF OUTPUT OSCILLATIONS IN A CODED TIME SEQUENCE OF THE DIFFERENT FREQUENCIES, WHICH SEQUENCE IS REPRESENTATIVE OF THE OBJECT, THE SELECTOR DEVICE OF THE TRANSPONDER UNIT INCLUDING A FIRST OSCILLATOR AND A FIRST NUMBER OF PHOTO-RESPONSIVE DEVICES EACH CONNECTED TO SAID FIRST OSCILLATOR FOR CAUSING THE FIRST OSCILLATOR TO EMITTRANSPONDER OUTPUT PULSES OF A FIRST FREQUENCY WHEN THE PHOTO-RESPONSIVE DEVICE IS EXCITED, AND A SECOND OSCILLATOR AND A SECOND NUMBER OF PHOTO-RESPONSIVE DEVICES EACH CONNECTED TO SAID SECOND OSCILLATOR FOR CAUSING THE SECOND OSCILLATOR TO EMIT TRANSPONDER-OUTPUT PULSES OF A SECOND FREQUENCY WHEN THE PHOTO-RESPONSIVE DEVICE IS EXCITED, SAID FIRST AND SECOND NUMBERS OF PHOTO-RESPONSIVE DEVICES BEING INTERCALATED IN A CODED SEQUENCE OF MUTUAL SPACINGS ALONG THE DIRECTION OF TRAVEL OF THE OBJECT, AND THE CONTROL MEANS INCLUDING LIGHT PROJECTING MENS ARRANGED TO DIRECT AT LEAST ONE BEAM OF LIGHT TOWARDS THE OBJECT SO AS TO BE INCIDENT ON SAID PHOTO-RESPONSIVE DEVICES AND EXCITE THEM IN SUCCESSION AS THE OBJECT TRAVELS PAST THE CONTROL MEANS, AND THEREBY CAUSE THE CODED TIME SEQUENCE OF OUTPUT PULSES OF DIFFERENT FREQUENCIES TO BE EMITTED BY THE TRANSPONDER UNIT.
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Accused Products
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Citations
1 Claim
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1. A SYSTEM FOR RECORDING THE IDENTITY OF A MOVING OBJECT AS IT PASSES A FIXED POSITION ADJACENT TO ITS PATH OF TRAVEL, SAID SYSTEM COMPRISING A CONTROL MEANS LOCATED AT SAID FIXED POSITION, A TRANSPONDER UNIT ON THE OBJECT, SAID TRANSPONDER UNIT BEING ARRANGED TO EMIT A CODED OUTPUT MEANS, THE CONTROL MEANS COMPRISING MEANS FOR CONTROL MEANS, THE CONTROL MEANS COMPRISING MEANS FOR EMITTING A TRANSPONDER-INITIATING SIGNAL AND PICK-UP AND RECORDING MEANS FOR RECEIVING AND RECORDING THE CODED TRANSPONDER OUTPUT SIGNAL, AND THE TRANSPONDER UNIT INCLUDING OSCILLATOR MEANS FOR PRODUCING OSCILLATIONS OF TWO DIFFERENT FREQUENCIES AND A SELECTOR DEVICE OPERABLE IN RESPONSE TO THE TRANSPONDER-INITIATING SIGNAL FROM THE CONTROL MEANS TO ACTUATE THE OSCILLATOR MEANS IN A SELECTED ORDER TO PRODUCE PULSES OF OUTPUT OSCILLATIONS IN A CODED TIME SEQUENCE OF THE DIFFERENT FREQUENCIES, WHICH SEQUENCE IS REPRESENTATIVE OF THE OBJECT, THE SELECTOR DEVICE OF THE TRANSPONDER UNIT INCLUDING A FIRST OSCILLATOR AND A FIRST NUMBER OF PHOTO-RESPONSIVE DEVICES EACH CONNECTED TO SAID FIRST OSCILLATOR FOR CAUSING THE FIRST OSCILLATOR TO EMITTRANSPONDER OUTPUT PULSES OF A FIRST FREQUENCY WHEN THE PHOTO-RESPONSIVE DEVICE IS EXCITED, AND A SECOND OSCILLATOR AND A SECOND NUMBER OF PHOTO-RESPONSIVE DEVICES EACH CONNECTED TO SAID SECOND OSCILLATOR FOR CAUSING THE SECOND OSCILLATOR TO EMIT TRANSPONDER-OUTPUT PULSES OF A SECOND FREQUENCY WHEN THE PHOTO-RESPONSIVE DEVICE IS EXCITED, SAID FIRST AND SECOND NUMBERS OF PHOTO-RESPONSIVE DEVICES BEING INTERCALATED IN A CODED SEQUENCE OF MUTUAL SPACINGS ALONG THE DIRECTION OF TRAVEL OF THE OBJECT, AND THE CONTROL MEANS INCLUDING LIGHT PROJECTING MENS ARRANGED TO DIRECT AT LEAST ONE BEAM OF LIGHT TOWARDS THE OBJECT SO AS TO BE INCIDENT ON SAID PHOTO-RESPONSIVE DEVICES AND EXCITE THEM IN SUCCESSION AS THE OBJECT TRAVELS PAST THE CONTROL MEANS, AND THEREBY CAUSE THE CODED TIME SEQUENCE OF OUTPUT PULSES OF DIFFERENT FREQUENCIES TO BE EMITTED BY THE TRANSPONDER UNIT.
Specification
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Current AssigneeDonald W. Neild
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Original AssigneeDonald W. Neild
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InventorsNeild, Donald W.
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Application NumberUS04/380,694Time in Patent Office883 DaysField of SearchUS Class Current340/10.4CPC Class CodesB61L 25/04 Indicating or recording tra...
