Patent ID: 8886452

Claim:
A mobile terminal having an autonomous navigation function, comprising: an anchor management unit configured to acquire a directional change point, set the acquired directional change point as an anchor point and store the anchor point, wherein the directional change point is assumed for a user to change direction on a route from a departure point to a destination point of the user of the mobile terminal on map information; a measurement unit configured to detect movement of the mobile terminal and provide sensor information indicative of the movement; a position calculation unit configured to calculate a current position of the mobile terminal based on the sensor information; a rotation detection unit configured to detect rotation of the user based on the sensor information and determine a rotation point associated with the detected rotation; and a current position correction unit configured to determine an anchor point corresponding to the determined rotation point from the anchor points stored in the anchor management unit and correct the current position of the mobile terminal with a position of the determined anchor point.