Patent ID: 8504297

Claim:
A map display device that displays a map image around a vehicle position, the display device comprising: a display unit; a first storage unit configured to store map data including road data of at least one road and road-related information corresponding to the at least one road; a second storage unit, separate and independent from the first storage unit, configured to store adjustment data defining a relationship between a display position of the road data on the display unit and a display position of the road-related information on the display unit; a map display control unit configured to calculate a display position of the road-related information corresponding to the road data, based on the adjustment data for an individual road; the map display control unit configured to display the road-related information on a screen of the display unit relative to an image corresponding to the road data, and configured to adjust a position of the road-related information on the display relative to the image corresponding to the road data without performing updating of the road data on the display, wherein the adjustment of the position of the road-related information eliminates overlap between the road-related information and the road data so as to increase readability of the road-related information on the display unit; and wherein the adjustment of the position of the road-related information is based on a number of lanes and a road type of the road.