Patent ID: 8302025

Claim:
A map display device, comprising: a map image data creation unit that creates map image data; a map image data storage unit that stores the map image data created by the map image data creation unit; a map display control unit that displays a map on the basis of the map image data upon a display monitor; a map scroll unit that scrolls the map; a weather information reception unit that receives weather information for a plurality of predetermined areas; a weather information image data creation unit that creates weather information image data for displaying an icon corresponding to a specific weather on the basis of weather information for an area or areas in the predetermined areas received by the weather information reception unit, the area or areas covering over a display range of the map displayed upon the display monitor; a weather information image data storage unit that stores the weather information image data created by the weather information image data creation unit; and a weather information display control unit that displays the icon on the basis of the weather information image data at a specific position upon the map; wherein the weather information display control unit displays the icon at the specific position upon the map after scrolling, using the weather information image data stored by the weather information image data storage unit before the map is scrolled.