Method and apparatus for navigation of automobiles.

摘要

The invention relates to a method and apparatus for navigation of automobiles having a distance-travel detection sensor (1) for detecting the distance traveled by a vehicle a direction detection sensor (2A, 2B) for detecting the direction of travel of the vehicle, data memory (4) for holding map data and etc., a micro processing unit (3) for calculating the present position of the vehicle from the signals of the distance-traveled detection sensor (1) and the direction detection sensor (2A, 2B) and for outputting display signals for the present position of the vehicle and display signals for map data read out from the data memory (4) to correspond to the present position of the vehicle and display means (5) 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.