MOVING VEHICLE IDENTIFICATION SYSTEM

A system for exchanging information by means of transmitted RF signals between a fixed location interrogator and a vehicle transponder moving in the vicinity of the interrogator. The transponder responds to a first trigger signal from the interrogator by transmitting to the interrogator a first data...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WILLIAM K BROCKELSBY, DONALD P GILLIS, CONRAD M.B. WALKER, MICHAEL L HRYCIUK
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE CALCULATING CHECKING-DEVICES COMPUTING COUNTING ENSURING THE SAFETY OF RAILWAY TRAFFIC FARE-REGISTERING APPARATUS FRANKING APPARATUS GENERATING RANDOM NUMBERS GUIDING RAILWAY TRAFFIC HANDLING RECORD CARRIERS PERFORMING OPERATIONS PHYSICS PRESENTATION OF DATA RAILWAYS RECOGNITION OF DATA RECORD CARRIERS REGISTERING OR INDICATING THE WORKING OF MACHINES SIGNALLING TICKET-ISSUING APPARATUS TIME OR ATTENDANCE REGISTERS TRAFFIC CONTROL SYSTEMS TRANSPORTING VOTING OR LOTTERY APPARATUS
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Beschreibung
Zusammenfassung:	A system for exchanging information by means of transmitted RF signals between a fixed location interrogator and a vehicle transponder moving in the vicinity of the interrogator. The transponder responds to a first trigger signal from the interrogator by transmitting to the interrogator a first data message derived from data stored in a transponder memory. The interrogator then remotely reprograms the transponder memory and generates a second trigger pulse. The transponder responds to the second trigger pulse by transmitting the reprogrammed data it then stores and the interrogator analyzes the last mentioned transmission to determine if the transponder properly received and responded to the reprogramming.