Patent ID: 8095308
Filing Date: 2012-01-10
Classification: G01C

Abstract:
1. A navigation apparatus for a vehicle, the navigation apparatus comprising: a position detection device that detects a present position of the vehicle; means for inputting map data; means for designating a departure point and a destination point of the vehicle; means for retrieving a route that is along a travel direction of the vehicle from the departure point to the destination point using the map data; a means for making a determination for delivery to a display device, the determination being to display a plurality of marks in a mark display range on a road in the retrieved route on a map generated based on the map data, the plurality of marks not being displayed outside the mark display range on the road in the retrieved route, means for switching a scale ratio of the map by scaling a real distance to a visible displayed distance in the display device based on the scale ratio, wherein: the means for determining determines to not display the plurality of marks in the display device, when a real distance between the present position of the vehicle detected by the position detection device and the reference guidance point is greater than a predetermined mark display execution distance; and the means for determining determines to display the plurality of marks in the mark display range on the road in the retrieved route in the display device such that a visible displayed distance of an interval between the plurality of marks is changed in the display device depending on changing of the scale ratio while a real distance corresponding to the visible displayed distance of the interval between the plurality of marks is unchanged without depending on the changing of the scale ratio, when the real distance between the present position of the vehicle and the reference guidance point is equal to or less than the predetermined mark display execution distance.