| 摘要 |
Peripheral apparatus of a computer apparatus is constructed by a detecting unit for detecting a voltage level of a signal line connected to a personal computer, a power supply control unit for controlling a supply of an electric power from a power source to a predetermined circuit in accordance with an output of the detecting unit, a communication request discriminating unit for judging whether a communication request of a predetermined procedure has been transmitted from the personal computer after the electric power of the power source was supplied to a predetermined power consumption unit by the power supply control unit or not, and a control unit for deciding the power supply executed by the power supply control unit on the basis of the judgment result of the communication request discriminating unit.
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