Patent ReferencesNavigation system for automotive vehicle Navigation system for guiding a vehicle along a precomputed optimal route Vehicle navigation system Land vehicle navigation apparatus Position information inputting apparatus for a vehicle travel guide system Enroute vehicle guidance system with heads up display Vehicle-navigation device Patent #: 5450343 InventorApplicationNo. 307952 filed on 09/16/1994US Classes:342/457, Land vehicle location (e.g., bus, police car340/990, With map display340/995.2, Intersection turn guidance701/214Means to improve accuracy of position or locationExaminersPrimary: Tarcza, Thomas H.Assistant: Phan, Dao Attorney, Agent or FirmInternational ClassG01S 003/02AbstractAn expandable multi-level intelligent vehicle highway navigation system 11 for a motor vehicle having an input device 34 that is adapted to load the segments 21 of a route into a memory means 32. A controller 30 receives a wheel pulse input 28 for distance and electric power 36 from the vehicle and controls the memory 32 and a plurality of displays 13 for displaying the segments 21 of the route, graphic symbols for vehicle direction and segment distance. The controller 30 may be adapted to control additional units such as infrared transceivers 58, RF transceivers 44, GPS devices 52, routing computers 48, map data bases 50, compass 56, etc. and various miscellaneous inputs 54 to build the basic unit into a more complex routing system. | |