The judgment means which are judged whether or not the navigation device and the navigation program information record media null presently

摘要

PROBLEM TO BE SOLVED: To provide a navigation device or the like for executing guide corresponding to the internal structure of a building even in the case of the inside of the building where vehicle may run.;SOLUTION: It is judged whether the current position of a vehicle is within a building or not, the top view of the building is displayed (steps 410, 414, and 416) when it is judged that the current position is within the building, and navigation processing is made using the displayed top view.;COPYRIGHT: (C)2001,JPO