Patent ID: 8996306
Filing Date: 2015-03-31
Classification: G01C

Abstract:
1. A route searching method implemented by a route search device that is installed on a mobile unit and has a database in which facility information and map information are stored, comprising: obtaining reference location information as location information of a given point, from an outside of the route search device; obtaining location information of a desired facility from the outside; obtaining corresponding location information as location information of a point corresponding to the given point, from the database; calculating a location correction factor used for correcting the location information of the desired facility, based on the reference location information and the corresponding location information; storing the location correction factor; correcting the location information of the desired facility, using the location correction factor; determining whether the corrected location information of the desired facility indicates a point within a region of facility information stored in the database and for which an arrival location is set; and making a search for a route to the desired facility and displaying the route thus found, wherein a search for a route is made to the arrival location when it is determined that the corrected location information of the desired facility indicates a point within the region of the facility for which the arrival location is set, or a search for a route is made to a location indicated by the corrected location information when it is determined that the corrected location information of the desired facility does not indicate a point within the region of the facility for which the arrival location is set.