ON-VEHICLE NAVIGATION DEVICE

摘要

PURPOSE:To speedily display a road map of an intended range by setting display ranges of road maps in administration field units. CONSTITUTION:A display range setting means 102 sets the ranges of road maps to be displayed on a display means 101 in the administration field units and a road map extracting means 103 reads a road map of a set administration field out of a storage means 100; and a scale calculating means 104 calculates the scale for displaying the road map within the screen of the display means 101 and an enlarging/reducing process means 105 enlarges or reduces the road map of the set administration field according to the scale, thereby displaying the map on the display means 101.