Signalling system
First Claim
1. AN IDENTIFICATION SYSTEM COMPRISING AN INTERROGATOR UNIT AND A RESPONDER UNIT RELATIVE MOVABLE WITH RESPECT TO EACH OTHER, SAID INTERROGATOR UNIT INCLUDING A TRANSMITTING MEANS AND A RECEIVING MEANS, SAID TRANSMITTING MEANS OPERABLE TO GENERATE AN INTERROGATION SIGNAL HAVING A CARRIER FREQUENCY AND A PLURALITY OF FREQUENCIES OF A FIRST SIDEBAND AND SAID RECEIVING MEANS OPERABLE TO RECEIVE A PLURALITY OF FREQUENCIES OF A SECOND SIDEBAND OF SAID CARRIER FREQUENCY, SAID RESPONDER UNIT INCLUDING MEANS FOR GENERATING RESPONSE SIGNALS HAVING FREQUENCIES OF SAID SECND SIDEBAND IN RESPONSE TO EACH OF SAID PLURALITY OF FREQUENCIES OF SAID FIRST SIDEBAND OF SAID INTERROGATION SIGNAL, SAID FIRST AND SECOND SIDEBANDS BEING MUTUALLY INDEPENDENT ONE TO ANTHER SIDEBAND.
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4 Citations
1 Claim
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1. AN IDENTIFICATION SYSTEM COMPRISING AN INTERROGATOR UNIT AND A RESPONDER UNIT RELATIVE MOVABLE WITH RESPECT TO EACH OTHER, SAID INTERROGATOR UNIT INCLUDING A TRANSMITTING MEANS AND A RECEIVING MEANS, SAID TRANSMITTING MEANS OPERABLE TO GENERATE AN INTERROGATION SIGNAL HAVING A CARRIER FREQUENCY AND A PLURALITY OF FREQUENCIES OF A FIRST SIDEBAND AND SAID RECEIVING MEANS OPERABLE TO RECEIVE A PLURALITY OF FREQUENCIES OF A SECOND SIDEBAND OF SAID CARRIER FREQUENCY, SAID RESPONDER UNIT INCLUDING MEANS FOR GENERATING RESPONSE SIGNALS HAVING FREQUENCIES OF SAID SECND SIDEBAND IN RESPONSE TO EACH OF SAID PLURALITY OF FREQUENCIES OF SAID FIRST SIDEBAND OF SAID INTERROGATION SIGNAL, SAID FIRST AND SECOND SIDEBANDS BEING MUTUALLY INDEPENDENT ONE TO ANTHER SIDEBAND.
Specification
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Current AssigneeHans-Ulrich Meyer, Rolf Beyersdorf
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Original AssigneeHans-Ulrich Meyer, Rolf Beyersdorf
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InventorsBeyersdorf, Rolf, HANS-ULRICH MEYER
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Application NumberUS04/168,845Time in Patent Office1,328 DaysField of SearchUS Class Current342/44CPC Class CodesB61L 25/04 Indicating or recording tra...
