Abstract: A bearing display apparatus provided with a geomagnetic sensor for detecting earth-magnetism, a display unit, and a control unit for calculating a geographical bearing based on detection values of the geomagnetic sensor and making the display unit display the information of the calculated bearing. The control unit monitors for an event of changes in operation of electronic parts mounted in the bearing display apparatus and updates the display of the information of the bearing on the display unit in accordance with an occurrence of the event.

Abstract: A bearing calculator provided with a geomagnetic sensor for detecting earth-geomagnetism and a control unit for calculating a geographical bearing based on detection values of the geomagnetic sensor. The control unit can execute offset error correction processing for correcting the offset error to the geomagnetic sensor based on a change in the magnetic field inside the bearing calculator. When detection values of the geomagnetic sensor enter an abnormal state, it performs said offset error correction processing when the abnormal state continues for a predetermined time, while does not perform the offset error correction processing when the abnormal state ends within a predetermined time.

Abstract: A bearing calculator provided with a geomagnetic sensor for detecting earth-geomagnetism and a control unit for calculating a geographical bearing based on detection values of the geomagnetic sensor. The control unit can execute offset error correction processing for correcting the offset error to the geomagnetic sensor based on a change in the magnetic field inside the bearing calculator. When detection values of the geomagnetic sensor enter an abnormal state, it performs said offset error correction processing when the abnormal state continues for a predetermined time, while does not perform the offset error correction processing when the abnormal state ends within a predetermined time.

Abstract: A mobile map display apparatus provided with a geomagnetic sensor for detecting earth-magnetism, a display unit, and a control unit able to calculate a geographical bearing based on detection values of the geomagnetic sensor and having a first display processing for display in a direction linked with the calculated bearing when acquiring the map and making the display unit display the map and a second display processing for display fixed to a predetermined bearing. In displaying the map, the control unit makes the display unit perform the display by the second display processing when detecting a drop of precision of the geomagnetic sensor.

Abstract: A bearing calculator provided with a geomagnetic sensor for detecting earth-geomagnetism and a control unit for calculating a geographical bearing based on detection values of the geomagnetic sensor. The control unit can execute offset error correction processing for correcting the offset error to the geomagnetic sensor based on a change in the magnetic field inside the bearing calculator. When detection values of the geomagnetic sensor enter an abnormal state, it performs said offset error correction processing when the abnormal state continues for a predetermined time, while does not perform the offset error correction processing when the abnormal state ends within a predetermined time.

Abstract: A bearing calculator provided with a geomagnetic sensor for detecting earth-geomagnetism and a control unit for calculating a geographical bearing based on detection values of the geomagnetic sensor. The control unit can execute offset error correction processing for correcting the offset error to the geomagnetic sensor based on a change in the magnetic field inside the bearing calculator. When detection values of the geomagnetic sensor enter an abnormal state, it performs said offset error correction processing when the abnormal state continues for a predetermined time, while does not perform the offset error correction processing when the abnormal state ends within a predetermined time.

Abstract: A mobile bearing calculator having a geomagnetic sensor for detecting earth-magnetism and a control unit for calculating a geographical bearing based on detection values of the geomagnetic sensor. The control unit monitors for an event such as a change of operation of electronic parts mounted on the mobile bearing calculator and corrects the geographical bearing in accordance with the occurrence of the event.

Abstract: A bearing calculator provided with a geomagnetic sensor for detecting earth-geomagnetism and a control unit for calculating a geographical bearing based on detection values of the geomagnetic sensor. The control unit can execute offset error correction processing for correcting the offset error to the geomagnetic sensor based on a change in the magnetic field inside the bearing calculator. When detection values of the geomagnetic sensor enter an abnormal state, it performs said offset error correction processing when the abnormal state continues for a predetermined time, while does not perform the offset error correction processing when the abnormal state ends within a predetermined time.

Abstract: A bearing display apparatus provided with a geomagnetic sensor for detecting earth-magnetism, a display unit, and a control unit for calculating a geographical bearing based on detection values of the geomagnetic sensor and making the display unit display the information of the calculated bearing. The control unit monitors for an event of changes in operation of electronic parts mounted in the bearing display apparatus and updates the display of the information of the bearing on the display unit in accordance with an occurrence of the event.

Abstract: A mobile bearing calculator having a geomagnetic sensor for detecting earth-magnetism and a control unit for calculating a geographical bearing based on detection values of the geomagnetic sensor. The control unit monitors for an event such as a change of operation of electronic parts mounted on the mobile bearing calculator and corrects the geographical bearing in accordance with the occurrence of the event.

Abstract: A bearing calculator provided with a geomagnetic sensor for detecting earth-geomagnetism and a control unit for calculating a geographical bearing based on detection values of the geomagnetic sensor. The control unit can execute offset error correction processing for correcting the offset error to the geomagnetic sensor based on a change in the magnetic field inside the bearing calculator. When detection values of the geomagnetic sensor enter an abnormal state, it performs said offset error correction processing when the abnormal state continues for a predetermined time, while does not perform the offset error correction processing when the abnormal state ends within a predetermined time.

Abstract: A mobile map display apparatus provided with a geomagnetic sensor for detecting earth-magnetism, a display unit, and a control unit able to calculate a geographical bearing based on detection values of the geomagnetic sensor and having a first display processing for display in a direction linked with the calculated bearing when acquiring the map and making the display unit display the map and a second display processing for display fixed to a predetermined bearing. In displaying the map, the control unit makes the display unit perform the display by the second display processing when detecting a drop of precision of the geomagnetic sensor.