Patent ID: 7805277

Claim:
A step number measuring apparatus comprising: plural sensors which detect a moving motion and output a corresponding detection signal and whose sensitivity axes mutually differ; sensor selecting means for selecting any one of the sensors; amplifying means for amplifying and outputting the detection signal from the sensor selected by the sensor selecting means; first calculation means for calculating a moving motion pitch on the basis of the amplified detection signal from the sensor selected by the sensor selecting means; second calculation means for calculating a moving motion pitch by performing a selected processing on the basis of the amplified detection signal from the sensor selected by the sensor selecting means; control means for selecting any one processing from among plural kinds of processings, selecting another processing from among the plural kinds of processings when the moving motion pitch calculated by the first calculation means differs from the moving motion pitch calculated by the second calculation means, and altering a gain of the amplifying means to a gain complying with the selected processing; and step number measuring means for performing a step number measurement by the processing selected by the control means.