COMMUNICATIVE NAVIGATION SYSTEM AND INFORMATION DISTRIBUTION SERVER, AND MOBILE NAVIGATION TERMINAL

摘要

There are provided a mobile navigation terminal and an information distribution server that includes a geographical database for route searching and a mesh database storing therein meshes into which images produced from aerial photographs have been divided. The mobile navigation terminal includes GPS means; matching means for matching a measured location with a route to determine a current location; and a mesh data requesting part for calculating mesh data for which to request the information distribution server anew in connection with the current location. The mobile navigation terminal transmits a route search request and/or a mesh data distribution request to the information distribution server. The information distribution server, which includes a route searching part and a mesh data distributing part, uses the geographical database to search for a route. If there exists a guide route in the mesh data as requested for, then the information distribution server adds the guide route data to the mesh data and distributes them to the mobile navigation terminal. The mobile navigation terminal displays the guide route on the distributed mesh data.