NAVIGATION SERVER, NAVIGATION CLIENT, AND NAVIGATION METHOD

摘要

Provided is a navigation server, a navigation client, and a navigation method that allow for searching for a route estimated to have a low degree of making a user feel burdened. A server cost recognition correction element 12 evaluates, for at least one of a plurality of indices representing one or both of a road environment of a subject segment and a relative relationship between the subject segment and one or more of other segments included in the server route candidate, a segment cost index value representing a traffic difficulty of the subject segment, and corrects a cost of the subject segment using the segment cost index value of the subject segment (STEP234, STEP236, STEP239, STEP241, STEP244, STEP247, STEP249, STEP350, and STEP450).

主权项

1. A navigation server comprising:
a server storage device that stores server map information in which a road is represented by a link; a server location recognition element that recognizes, through communications, a departure location and a destination location of a user of a navigation client; a server cost recognition element that recognizes a reference segment cost of a subject segment, the subject segment being composed of one or a plurality of continuous links included in a server route candidate that is a candidate of a server route connecting a link in a vicinity of the departure location and a link in a vicinity of the destination location; a server cost correction element that, for at least one of a plurality of indices representing one or both of a road environment of the subject segment and a relative relationship between the subject segment and one or more of other segments included in the server route candidate, evaluates a segment cost index value representing a traffic difficulty of the subject segment, and calculates a corrected segment cost by correcting the reference segment cost of the subject segment using the segment cost index value of the subject segment; and a server cost information transmission element that transmits, to the navigation client, information associated with the corrected segment cost.