Patent ID: 8086401

Claim:
A system for identifying a road segment, which is specified on a transmitting side digital map stored in a transmitting apparatus, on a receiving side digital map stored in a receiving apparatus and different from said transmitting side digital map, said system comprising: said transmitting apparatus that creates location information and transmits said created location information to said receiving apparatus, wherein said location information includes coordinate series information which represents a road shape of said road segment by coordinates of intersections included in said road segment and coordinates of nodes located on one or more links between two adjacent intersections of said intersections, and azimuth information which represents an azimuth of a curve of said road shape at each of said intersections and said nodes; and said receiving apparatus that receives said location information and identifies said road segment on said receiving side digital map by matching each of said intersections and said nodes included in said transmitted location information with a point of each of one or more matching candidate points located on a road of said receiving side digital map, wherein said matching candidate points are proximate to each of said intersections and said nodes to be matched and selected so that an azimuth difference between an azimuth of said road of said receiving side digital map at each of said matching candidate points and said azimuth of said curve of said road shape at each of said intersections and said nodes to be matched is smaller than a prescribed value.