Vehicle identification system
March 25, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3720911 Data transmission system including an RF transponder for generating a broad spectrum of intelligence bearing sidebands Electronic license plate for motor vehicles Universally applicable, in-motion and automatic toll paying system using microwaves System for identification and determination of the moment of passage of a multiple number of moving bodies at a given point on their path Method for positioning moving vehicles and exchanging communications between the vehicles and a central station Fast lane credit card Electronic display license plate Toll collecting system for a vehicle Hazardous waste transport management system InventorsAssigneeApplicationNo. 824242 filed on 03/25/1997US Classes:340/933, VEHICLE DETECTORS235/375, SYSTEMS CONTROLLED BY DATA BEARING RECORDS235/380, Credit or identification card systems235/384, Transportation340/902, Transmitter in another vehicle (e.g., emergency vehicle)340/904, Transmitter in one vehicle only340/928, Combined (e.g., toll systems, one-way)342/457Land vehicle location (e.g., bus, police carExaminersPrimary: Tong, NinaAttorney, Agent or FirmInternational ClassG08G 001/01AbstractA vehicle identification system for identifying motor vehicles in a group of vehicles at distances in excess of 200 feet is disclosed. The system includes an interrogator for directionally broadcasting an interrogation signal toward a vehicle of interest and a set of vehicle identification tags attached to the vehicles for receiving interrogation signals and sending a response signal to the interrogator. The response signal consists of information from the memory in the vehicle identification tag which allows the interrogator to identify the ownership or registration of the vehicle. Preferably, the tags have at least two memory portions with one portion being more secure than the other. Information useful to law enforcement agencies may be stored in the more secure memory portion and information for public or commercial use, such as parking access codes and toll information may be stored in the less secure memory portion. The system can link to an external database to verify and obtain more information regarding the owner of the vehicle, such as name, address, and record of traffic violations. Each tag on the vehicle also communicates with the other tags in the tag set on a vehicle, and, if the tags within a set are separated beyond a preset distance or otherwise subjected to tampering, the tags will transmit an alarm to any nearby interrogator.Field of SearchVEHICLE POSITION INDICATIONVEHICLE PARKING INDICATORS VEHICLE DETECTORS Combined (e.g., toll systems, one-way) EXTERNAL CONDITION VEHICLE-MOUNTED INDICATOR OR ALARM Transmitter in another vehicle (e.g., emergency vehicle) Relative distence between vehicles (e.g., collision alert) Transmitter in one vehicle only Highway information (e.g., weather, speed limits, etc.) Density Discriminates vehicle direction Speed and overspeed Position indication transmitted by vehicle after receipt of information from local station Location indication Land vehicle location (e.g., bus, police car Credit or identification card systems Transportation | |
