Patent ID: 9714835
Date: 2017-07-25
CPC Classifications: G01C,G09B

Claim:
1. A navigation system composed of a navigation server and a navigation-client, the navigation server comprising: a server storage unit configured to store a server map in which each location point is described by a coordinate value including latitude and longitude, and a link for route calculation is described by a group of coordinate values; a first server arithmetic processing element configured to receive designated location point information from the navigation-client, and to recognize each of two designated location points based on the designated location point information, and then by using a server map, to search for one or a plurality of server routes constituted by a plurality of links connecting the two designated location points; and a second server arithmetic processing element including a designator for designating a display manner of each link according to a level of travelling cost, the display manner including one of color and brightness, and configured to transmit route information in which an arrangement manner of the server route searched by the first server arithmetic processing element is expressed by coordinate values, the route information also including the level of travelling cost of each link and the display manner of each link designated by the designator according to the level of travelling cost, addressed to the navigation-client, the navigation-client comprising: a client storage unit configured to store a client map in which each location point is described by a coordinate value including latitude and longitude; an image output device; a first client arithmetic processing element configured to transmit the designated location point information to the navigation server; and a second client arithmetic processing element configured to receive the route information from the navigation server, and to make the image output device display a client route for travel guidance superimposed on the client map, the client route being a route having an arrangement manner in the client map which matches the arrangement manner expressed by the coordinate values included in the route information and the level of the travelling cost of each link in the client route being reflected in the display manner of each link in the client route on the image output device, while the level of the travelling cost is not reflected in the display manner of each link not included in the client route, the display manner being designated by the route information, and the display manner of each link in the client route including one of color and brightness.