MAP DATA UPDATING DEVICE, UPDATE MAP DATA CREATION DEVICE, MAP DATA UPDATING METHOD, UPDATE MAP DATA CREATION METHOD, MAP DATA UPDATING PROGRAM, UPDATE MAP DATA CREATION PROGRAM, AND RECORDING MEDIUM

摘要

A map data updating device (200) comprises a recording unit (201), an acquisition unit (202), and an update unit (203). The recording unit (201) has parcel data for drawings and region data for route calculations and records map data, which is divided into predetermined areas each corresponding to every one of a plurality of different reduction scales and is composed of mesh units having a hierarchical structure. The acquisition unit (202) acquires the latest parcel data and region data including changed data on a per hierarchy basis. The update unit (203) updates the parcel data and region data stored in the recording unit (201) on a per mesh unit basis using the latest parcel data and region data of each hierarchy obtained by the acquisition unit (202).