Sensor module, method of correction therefor, and mobile...

Geometrical instruments – Indicator of direction of force traversing natural media – Magnetic field responsive

Reexamination Certificate

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C702S092000

Reexamination Certificate

active

07743519

ABSTRACT:
A sensor module maintaining high detection accuracy. Correction data of a detected magnetic field is updated only in a case that a fluctuation band acquired from an output signal of an acceleration sensor is less than a threshold value and a difference between an azimuth angle acquired from an output signal of a terrestrial magnetism sensor and an inclination angle acquired from an output signal of acceleration sensor is less than the threshold value. Therefore, the correction data is updated only in a case that a magnetic field at a position of a mobile object is stably detected, and an accuracy of the correction data can be maintained.

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