Patent ID: 7170518
Filing Date: 2007-01-30
Classification: G01C,G09B

Abstract:
1. A method of selectively displaying cartographic features on a video display of a navigation system, the method comprising the steps of: a) determining an operational mode of the navigation system, wherein the navigation system includes first and second operational modes with the first operational mode comprising an on-road mode in which a vehicle position is displayed relative to a road system and with the second operational mode comprising an off-road mode in which the vehicle position is displayed irrelative to a road system; b) selecting a desired cartographic entity for a cartographic feature based upon the operational mode including selecting a less detailed desired cartographic entity for the cartographic feature in the first operational mode and selecting a more detailed desired cartographic entity than the less detailed desired cartographic entity for the same cartographic feature in the second operational mode; and c) displaying the selected desired cartographic entity on the video display.