Patent ID: 7941268

Claim:
A mobile communication terminal apparatus comprising: a geomagnetic sensor for detecting earth-geomagnetism; a displaying means; and a control means for calculating a geographical bearing base on values detected by the geomagnetic sensor, and displaying the resultant bearing information on the display means, and a position information acquisition means for acquiring information concerning a geographical position where the mobile communication terminal apparatus is positioned at this time, the control means displaying a map of the surrounding of a current position of the mobile communication terminal apparatus which is specified on the basis of the positional information acquired by the position information acquisition means, on the display means, displaying the bearing information included in the map on the display means, performing a control processing for controlling a direction of the map in a display screen of the display means in response to the calculated bearing, and stopping the control processing of the direction of the bearing when the detected value of the geomagnetic sensor becomes a predetermined abnormal state and the predetermined abnormal state lasts over a predetermined time, during the execution of the control processing, and then, fixing a predetermined bearing on the map to a predetermined direction on the display screen of the display means, and correcting the bearing information.