MAP INFORMATION LICENSE MANAGING METHOD

摘要

PROBLEM TO BE SOLVED: To give license information in minimum map section units and to enable a user to manage the information on all computers using it by calculating pieces of license information of map areas in a high layer one after another from license information added to each map area of the smallest scale and managing map information with the license information added to the respective areas. SOLUTION: A user confirming means 205 confirms whether or not the user who operates an input device 202 matches user information in a user information storage means 206. A map information storage means 210 stores the map information in the state wherein it is protected against illegal use. A license information storage means 208 stores the license information given to the map information. A license confirming means 207 checks whether or not proper license information is given to map information whose use is indicated. A map information access means 209 gains access so as to display the map information whose license has been confirmed.