Hybrid GPS/data line unit for rapid, precise, and robust position determination
December 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 ReferencesNavigation system and method Integrated cargo security system Differential navigation system for remote mobile users Digital global positioning system receiver System for continuously establishing and indicating the location of a movable object GPS satellite signal tracking method for GPS receivers Cellular position locating system Differential position determination using satellites Two channel global positioning system receiver GPS satellite signal tracking system for GPS receivers InventorsAssigneeApplicationNo. 992892 filed on 12/17/1992US Classes:455/456.3, Position based personal service342/450, Position indicating (e.g., triangulation)342/457, Land vehicle location (e.g., bus, police car701/200, NAVIGATION701/219Using Loran or Shoran or Decca equipmentExaminersPrimary: Black, Thomas G.Assistant: Day, Julie D. Attorney, Agent or FirmForeign Patent References
International ClassesG01S 005/02G08G 001/12 AbstractA global positioning system (GPS) in which a plurality earth orbiting satellites transmit position information to mobile radio stations on earth, is provided with a separate source satellite position data broadcast digital channels and one or more dial-up service separate communication channels (selected from a data link supported by terrestrial cellular telephone and other radio packet data services) for assisting the mobile radio station to access position information from the satellites. A controller is coupled to the mobile radio station for connecting to the separate communication channel for extricating the satellite position data via separate communication channel. The controller includes a microprocessor for processing the satellite position data to enable the mobile radio station to rapidly locate and access position information from said earth orbiting satellite. A unique system for processing the data is disclosed.Other References
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