The information recording medium recording the program map drawing map drawing device, a navigation device, and map drawing program and a map drawing method

摘要

Make it possible to allow partial updates of the data in the map display, it has to improve the efficiency of updating. I be constituted by a group of files consisting of regional map file RF-k, and a plurality of common map file CF, the data in the map display. Maps and data portion RFM, including the map data corresponding to the map, which is divided into a predetermined area of ​​a map of a given scale, this regional map file RF-k is, regional map management data portion RFR for managing the map data and a. When drawing a map based on map data actually map to be drawn on the basis of the data contained in the management record CFC of the common map file CF, the data contained in the regional map administration data unit RFR identifies the map data corresponding to draw a map based on the map data identified the.