Patent ID: 7702457

Claim:
A pedestrian navigation system comprising: an information delivery server; and a portable terminal connected to said information delivery server via a network; said information delivery server comprising: a map database that stores nodes and links, including paths constituting intersections, and cost of each link as data; a path seeking section; an intersection path judging section that, on the basis of combinations of link lengths of passage patterns composed of multiple links having differing lengths, detects a passage path for an intersection from the guidance paths found by said path seeking section; a guidance point determining section that determines a guidance point for path guidance; a guidance data creating section that determines a guidance pattern for path guidance that is suited to the guidance point; and a data delivery section that delivers map data, guidance path data and guidance data to said portable terminal; and said guidance point determining section selecting a particular node as a guidance point from all nodes constituting an intersection, on the basis of the passage pattern detected by said intersection path judging section.