Patent ID: 7496447
Filing Date: 2009-02-24
Classification: G01C

Abstract:
1. A map display device comprising: a display for displaying map data; a current position detection means for detecting a current position of a subject vehicle; a map data storage means for storing the map data for the display; and a map data process means for processing the map data, wherein the map data process means determines whether the subject vehicle is traveling outside of a road on a map displayed on the display based on the current position of the subject vehicle, wherein the map data process means updates the map data upon receiving an affirmative response to an inquiry for confirmation of an update of a portion of the map data including a path of the current position of the subject vehicle on the map, wherein the portion of the map data includes a vehicular swept path of the subject vehicle that does not belong to the road on the map, and wherein the map data process means updates the portion of the map data by receiving the map data delivered from a data distribution facility.