Rail navigation system
February 20, 2016. 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 apparatus for automotive Vehicle location detecting system Process and system for localizing a mobile unit which travels on a system of railroads Rail vehicle positioning system Traffic control system utilizing on-board vehicle information measurement apparatus Automatic vehicle control and location system Position correction method for vehicle navigation system Correcting GPS position in a hybrid naviation system Railway signalling system Complex switch turn-out arrangements using proximity selection Patent #: 5590856 InventorsAssigneeApplicationNo. 604032 filed on 02/20/1996US Classes:701/19, Railway vehicle246/122R, TRAIN-POSITION INDICATION701/208, For use in a map data base system701/213, Using Global Positioning System (GPS)701/216Having an self-contained position computing means (e.g., dead reckoning)ExaminersPrimary: Nguyen, Tan T.Attorney, Agent or FirmInternational ClassesB61L 025/02G06F 017/00 AbstractMethod and apparatus for a railway navigation system which provides information defining the position of a railway vehicle on a track system. The system uses an on-board computer with a track database representing the locations of the rail lines, including locations of curves and switches. The system uses a turn rate indicator and a speedometer means to obtain a value for the curvature of the track on which the railway vehicle moves. Curvature data so obtained is compared with data in the track database to determine the position of the railway vehicle in relation to curves and switches of the track system. | |
