Patent ID: 8682578
Filing Date: 2014-03-25
Classification: G01C

Abstract:
1. A road link string conversion method executed by a computer, in which a road link string conversion process converts a first road link string included in first map data stored by a storage device, into a second road link string included in second map data, different from the first map data, stored by the storage device, comprising: deciding whether or not first coordinates-of-position strings of the first road link string correspond to second coordinates-of-position of the second map data by comparing first coordinates-of-position of the first coordinates-of-position strings to the second coordinates-of-position of the second map data; constructing a second coordinates-of-position string by combining together a part of the first coordinates-of-position strings, representing a plurality of road links, decided as not corresponding to the second coordinates-of-position of the second map data; obtaining the second road link string by searching a route from a start node to an end node of the plurality of road links, corresponding to the second coordinates-of-position string, in the second map data; and converting the first road link string, including the plurality of road links, into the second road link string.