Patent ID: 9476726
Filing Date: 2016-10-25
CPC Classification: G01C,G08G

Claim Text:
1. A navigation device comprising: means for determining the current position of a user using an absolute position expressed as angular data in units of degrees longitude and degrees latitude by using the electric waves coming from a plurality of artificial satellites going around the earth; means for storing coordinates of longitude and latitude of a starting place and a final place, and coordinates of longitude and latitude of nodes, as obtained by setting said starting point and said final place, on a scheduled route, wherein the coordinates are stored as angular data in units of degrees longitude and degrees latitude; means for displaying said current position and said scheduled route; means for controlling the display of said means for displaying, by converting the angular data of said absolute positions and said coordinates into distance data while making corrections according to said current position, by calculating an element between said nodes to determine whether or not said current position is on said scheduled route, based on whether or not the distance between said element and said current position is within a predetermined range, and by changing a display on said means for displaying based on the calculation of whether or not the distance between said element and said current position is within said predetermined range; and means for receiving the coordinates of longitude and latitude of said starting place and said final place, and coordinates of longitude and latitude of said nodes, from an external auxiliary device including a processor for selecting said scheduled route based on the starting place and final place.