| 摘要 |
An electronic device includes an operation panel, an electric power control circuit, an operation confirming circuit, an electric power mode switching circuit, a human body detecting circuit, and a cycle changing circuit. The electric power control circuit switches a plurality of electric power supply modes including a standby mode and a low electric power consumption mode that uses less electric power consumption amount than the standby mode. The operation confirming circuit periodically confirms an operation to the operation panel in the low electric power consumption mode. The electric power mode switching circuit causes the electric power control circuit to switch the electric power supply mode when the operation confirming circuit detects the operation to the operation panel. The cycle changing circuit changes an operation confirmation cycle by the operation confirming circuit corresponding to a detection state of the human body detecting circuit. |
