NAVIGATIONAL APPARATUS FOR USE IN AUTOMOTIVE VEHICLES

摘要

A navigational apparatus for use in automotive vehicles, comprising a distance sensor (2) for detecting a distance travelled by the vehicle and a heading sensor (1) for detecting the direction of travel of the vehicle. In response to the detection signals from the sensors (1, 2) a microcomputer (4) computes the present position of the vehicle and generates a position signal. In accordance with the position signal from the microcomputer (4) and the selection of display selection switches a display tube (6) gives a graphic display of a road map or a character display of a road map data.