Navigation apparatus for automobile
Patent 4635202 Issued on January 6, 1987. Estimated Expiration Date: 
July 18, 2004. 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.
July 18, 2004. 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 ReferencesElectronic navigator for automotive vehicles Navigator for vehicles Vehicle-mounted navigator Course guidance system with speeded-up display function Patent #: 4532514 InventorsAssigneeApplicationNo. 06/632068 filed on 07/18/1984US Classes:701/208, For use in a map data base system340/995.25, Including vehicle position correction345/672TranslationExaminersPrimary: Chin, GaryAttorney, Agent or FirmInternational ClassesG09B 29/10 (20060101)G01C 21/34 (20060101) Foreign Application Priority Data1983-07-20 JPAbstractIn a navigation apparatus for automobile having a distance-travel detection sensor for detecting the distance traveled by a vehicle a direction detection sensor for detecting the direction of travel of the vehicle, data memory for holding map data and etc., a micro processing unit for calculating the present position of the vehicle from the signals of the distance-traveled detection sensor and the direction detection sensor and for outputting display signals for the present position of the vehicle and display signals for map data read out from the data memory to correspond to the present position of the vehicle and display means for display the display signals thereon, wherein the point, at which an update of the map data corresponding to the movement of the vehicle starts, is variable in accordance with the speed of the vehicle. | |
