Vehicle tracking and security system
Patent 5223844 Issued on June 29, 1993. Estimated Expiration Date: 
April 17, 2012. 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.
April 17, 2012. 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 ReferencesMethod of collecting and using data associated with tagged objects Vehicle location system Tracking system Vehicle locating system with Loran-C Cellular position locating system System and method for generating signal waveforms in a CDMA cellular telephone system Patent #: 5103459 InventorsAssigneeApplicationNo. 870141 filed on 04/17/1992US Classes:342/357.07, Tracking or monitoring (i.e., lost or stolen vehicles)340/825.49, Location indication342/357.09, With transmission of location-indicative information to or from a remote station342/457, Land vehicle location (e.g., bus, police car379/913, PERSON LOCATOR OR PERSON-SPECIFIC455/404.2, Location monitoring455/456.1, Location monitoring701/213, Using Global Positioning System (GPS)701/215Having multiple GPS antennas or receivers (e.g., differential GPS)ExaminersPrimary: Blum, Theodore M.Attorney, Agent or FirmInternational ClassesH04B 007/185G01S 005/02 AbstractThe present invention provides a vehicle tracking and security system which allows immediate response in case of vehicle theft, an accident, vehicle breakdown, or other emergency. Guardian and tracking functions are provided through Mobile Units installed in hidden locations in vehicles to be monitored. The Mobile Units communicate with a Control Center. Preferably, the Mobile Unit provides vehicle theft and intrusion protection using an in-vehicle alarm and security system linked to the Control Center by a transceiver in the Mobile Unit. Also, a keypad or other human interface device is provided, allowing a vehicle driver or occupant to signal the Control Center that a particular type of assistance is needed. The vehicle's location may be automatically transmitted to the Control Center along with any automatic alarm signal or manually entered request, the location being precisely determinable anywhere in the world through use of Global Positioning System (GPS) information. The present invention provides continuous monitoring of a large number of vehicles for a broad range of status and emergency conditions over a virtually unlimited geographic area, also allowing manual communication of requests for assistance to that specific location. Advantageously, the system is implemented using existing commercial or police communications equipment.Other References
Field of SearchLand vehicle location (e.g., bus, police car | |
