Patent ID: 6430502
Filing Date: 2002-08-06
Classification: G01C,G08G

Abstract:
A motor vehicle navigation system, comprising:a central navigation computation unit equipped with a memory storing topographical data representing an actual topography of a predetermined zone; a device for locating a vehicle in which said central navigation computation unit is disposed; a user interface device selected from the group consisting of a voice guidance device and a screen connected to said central navigation computation unit and operating in a â€œnormal guidanceâ€  mode, wherein a direction pictogram is displayed on the screen to indicate major maneuvers to be reproduced by an operator of the vehicle; a control device for causing said user interface device to operate in a temporarily enhanced guidance mode, wherein said user interface device represents the topography, as stored in said memory, of an area for which enhanced guidance has been requested, obtained by temporary modifications of a filtering applied to the stored topographical data.