Electronic device and power management method
US11569680B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2019 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Sep 17, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic device includes a backup power supply unit, a first power management unit, a switch, a voltage detection unit, a processor and an electronic module. The first power management unit is coupled to the backup power supply unit and an external power supply unit. The switch is coupled to the first power management unit. The voltage detection unit is coupled to the external power supply unit and the switch. The processor is coupled to the voltage detection unit. The electronic module is coupled to the switch and the processor. When a voltage level of the external power supply unit is lower than a first predetermined level, the voltage detection unit outputs a detection signal. The switch is controlled by the detection signal to open to stop supplying power to the electronic module. The processor is controlled by the detection signal to execute a shutdown process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.