| CPC G06F 1/26 (2013.01) [G04G 9/007 (2013.01); G04G 17/06 (2013.01); G04G 21/02 (2013.01)] | 19 Claims |
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1. A wearable device, comprising:
a multi-use circuit that includes a plurality of electrical terminals provided so as to be able to be close to a subject and that is capable of being used for both (i) a determination function that determines whether the wearable device is being worn on the subject and (ii) a predetermined function other than the determination function;
a determination circuit for enabling execution of the determination function, the determination circuit being connected to the multi-use circuit; and
a processor configured to execute the determination function,
wherein:
the processor includes:
a first port connected to a first terminal of the plurality of electrical terminals via a first connection wire of the multi-use circuit and to be used for data transfer via said first terminal of the plurality of electrical terminals,
a second port connected to the determination circuit, and
a third port connected to a second terminal of the plurality of electrical terminals via a second connection wire of the multi-use circuit and to be used for data transfer via said second terminal of the plurality of electrical terminals,
the wearable device further comprises a switcher which is operable to selectively connect the determination circuit to one of the first connection wire and the second connection wire,
upon execution of the determination function, the processor operates the switcher to connect the determination circuit to the first connection wire and outputs a predetermined worn/removed determination voltage from the second port to the first terminal via the determination circuit, the switcher, and the first connection wire, and the first port detects, via at least a portion of the determination circuit or the first connection wire, a voltage waveform corresponding to a voltage waveform of the predetermined worn/removed determination voltage output from the second port, and
in a case in which it is determined based on the voltage wave form detected by the first port that the wearable device is not being worn, the processor operates the switcher to disconnect the first connection wire from the determination circuit and to connect the second connection wire to the determination circuit and outputs the predetermined worn/removed determination voltage from the second port to the second terminal via the determination circuit, the switcher, and the second connection wire, and the third port detects, via at least a portion of the determination circuit or the second connection wire, a voltage waveform corresponding to the voltage waveform of the predetermined worn/removed determination voltage output from the second port.
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