| 摘要 |
An electronic device including a power switch, a switch unit, a power supply unit and a control unit is provided. Two power ends of the power switch are connected in parallel with two connecting terminals of the switch unit. The power supply unit generates a system voltage by a power come from the power switch or the switch unit. When the two power ends of the power switch are conducted for a predetermined time, the power is provided to the power supply unit and the electronic device starts up. Furthermore, the control unit controls the switch unit to conduct the two connecting terminals, so that the power is still provided to the power supply unit through the switch unit after the two power ends are disconnected. When the electronic device is shut down, the control unit controls the switch unit to disconnect the two connecting terminals. |
| 主权项 |
1. An electronic device, comprising:
a power switch, having a first power end and a second power end, wherein the first power end is used for receiving a power; a switch unit, having a first connecting terminal and a second connecting terminal, wherein the first connecting terminal and the second connecting terminal of the switch unit are connected in parallel to the first power end and the second power end of the power switch; a power supply unit, connected to the second power end of the power switch and the second connecting terminal of the switch unit; and a control unit, connected to the power supply unit and the switch unit, wherein the control unit comprises: an embedded controller, maintaining one of a plurality of state signals to a first level when the electronic device starts up, and maintaining the state signals to a second level when the electronic device is shut down; and a switch circuit, connected to the embedded controller, wherein when the first power end and the second power end are conducted for a predetermined time, the power is provided to the power supply unit and the electronic device starts up to allow one of the state signals to be the first level, the switch circuit provides a setting signal having the second level to control the switch unit to conduct the first connecting terminal and the second connecting terminal, so that the power is still provided to the power supply unit through the switch unit after the first power end and the second power end are disconnected, and when the electronic device is shut down to allow the state signals to have the second level, the switch circuit provides the setting signal having the first level to control the switch unit to disconnect the first connecting terminal and the second connecting terminal. |
