MAP DATABASE DEVICE, MAP DISPLAYING DEVICE AND RECORDING MEDIUM HAVING AND USING HEIGHT DATA EFFICIENTLY

摘要

The map database device according to the present invention is employed to display a bird's eye view map achieved by converting a two-dimensional map into a display format adopting a bird's eye view method. And the map data base device includes: a height data portion in which height data respectively corresponding to altitudes of a plurality of areas into which the two-dimensional map is divided are respectively stored in correspondence to the areas.