Electronic device and power management method thereof
View Patent ↗The present invention discloses an electronic device having a power management module and a power management method thereof. Within the power management method is used for an electronic device, which has a first power module, a second power module and the loads. The power management method comprises the following step: (1) monitoring the first power module and the second power module; (2) if the first power module and the second power module are activated at the same time, sequentially stopping a supply of electric power to at least one of the loads until the electronic device has total load current smaller than a reference value.
1. A power management method for use in an electronic device having a first power module, a second power module and loads, the power management method comprising steps of:
monitoring the first power module and the second power module; and
if the first power module and the second power module are activated at the same time, sequentially stopping a supply of electric power to at least one of the loads until the electronic device has total load current smaller than a reference value;
wherein the first power module and the second power module comprise a printing module and a wireless communication module respectively.
2. The power management method of claim 1 , further comprising a step of beginning a supply of electric power to the loads if one of the power modules is not activated.
3. The power management method of claim 1 , wherein the step of sequentially stopping a supply of electric power to the loads is performed according to a priority order in which the loads' electric power supply is to be stopped.
4. The power management method of claim 1 , wherein one of the loads comprise an audio module, a display module, a backlight module, a memory module, an input/output interface module, or a system module.
5. A power management method for use in an electronic device having a printing module, a wireless communication module and loads, the power management method comprising steps of:
monitoring the printing module and the wireless communication module; and
if the printing module and the wireless communication module are activated at the same time, sequentially stopping a supply of electric power to at least one of the loads, until the electronic device has total load current smaller than a reference value.
6. The power management method of claim 5 , further comprising a step of beginning a supply of electric power to the loads if one of the printing module or the wireless communication module is not activated.
7. The power management method of claim 5 , further comprising a step of determining whether or not the printing module is activated according to an interrupt produced by the printing module.
8. The power management method of claim 5 , wherein the step of sequentially stopping a supply of electric power to the loads is performed according to a priority order in which the loads' electric power supply is to be stopped.
9. The power management method of claim 5 , wherein one of the loads comprises an audio module, a display module, a backlight module, a memory module, an input/output interface module, or a system module.
10. An electronic device, having:
a first power module;
a second power module;
loads; and
a power management module, coupled to the first power module, the second power module and the loads, for monitoring the first power module and the second power module, wherein if the first power module and the second power module are activated at the same time, the power management module is used to sequentially stop a supply of electric power to at least one of the loads until total load current of the electronic device is smaller than a reference value;
wherein the first power module comprises a printing module, and the printing module comprises a thermal printer.
11. The electronic device of claim 10 , wherein the second power module comprises a wireless communication module.
12. The electronic device of claim 11 , wherein the wireless communication module comprises a modem.
13. The electronic device of claim 10 , wherein the power management module enables beginning a supply of electric power to the loads if one of the first power module or the second power module is not activated.
14. The electronic device of claim 10 , wherein the power management module determines whether or not the first power module is activated according to an interrupt produced by the first power module.
15. The electronic device of claim 10 , wherein if the first power module and the second power module are activated at the same time, the power management module is used to sequentially stop a supply of electric power to the loads according to a priority order in which the loads' electric power supply is to be stopped.
16. The electronic device of claim 10 , wherein one of the loads comprises an audio module, a display module, a backlight module, a memory module, an input/output interface module, or a system module.