| 摘要 |
The present invention provides an apparatus capable of operating with power from a small-sized external power source of which power-supply capacity is small. The apparatus switches among a first switch, a second switch and a third switch so as to use power from an AC adapter as the power for charging a battery and also as the power for operating the apparatus during charging of the battery from the AC adapter by way of a charging control section and during execution of an operation step except for a high power consumption step. The apparatus stops charging the battery to use the power of the battery as the power for operating the apparatus during execution of the high power consumption step.
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