Foldable mobile telephone
作者： Tadashi Eguchi
DOI:
关键词:
摘要: A foldable mobile telephone which is constituted of a main body and lid being open/close-able able to detect open/close state the provided. The provides receiver for ultrasonic wave microphone wave. An oscillator intermittently generates an signal at each fixed interval gives receives from generated by detecting signal. level judging circuit judges whether this higher or lower than decided With construction, becomes possible applied constitution, therefore outside magnetic field does not influence operation.
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