Methods and systems for managing power supply at a device
AssigneePismo Labs Technology Limited
InventorsMing Pui CHONG, Kin Kwong Chow
Life of this patent
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Abstract
Methods and systems for managing power supply at a device. The device is capable of receiving power via a plurality of power inputs. The device first determines whether a first condition is satisfied. A first switch is maintained in a closed position if the first condition is satisfied. When the first switch is in a closed position, the device is capable of receiving power from a first power supply. Alternatively, when the first condition is not satisfied, the device determines whether or not a second condition is satisfied. If the second condition is satisfied, the first switch is maintained to be in a closed position. If the second condition is not satisfied, the first switch is opened after a predefined time period.
Claims20
A method for receiving power supply at a device, wherein the device is connected to a first power supply and a second power supply, comprising:
- a. detecting whether voltage at the second power supply is below a reference voltage;
- b. when the voltage at the second power supply is below the reference voltage:
- i. maintaining a first switch in a closed position for receiving power from the first power supply for a first period of time;
- ii. after the first period of time, when the voltage at the second power supply is still below the reference voltage:
- A. performing a shut-down process;
- B. opening the first switch to an open position to stop receiving power from the first power supply;
- c. when the voltage at the second power supply is above the reference voltage, maintaining a first switch in a closed position for receiving power from the first power supply;
- wherein power supplied by the first power supply is more than the power supplied by the second power supply.
A method for receiving power supply at a device, wherein the device is connected to a first power supply and a second power supply, comprising:
- a. receiving power from one or both of the first power supply and the second power supply;
- b. when receiving a signal through an input:
- i. maintaining a first switch in a closed position for receiving power from the first power supply for a first period of time;
- ii. after the first period of time, when the voltage at the second power supply is still below the reference voltage:
- A. performing a shut-down process;
- B. opening the first switch to an open position to stop receiving power from the first power supply;
- wherein power supplied by the first power supply is more than the power supplied by the second power supply.
A device for receiving power supply at a device, wherein the device is connected to a first power supply and a second power supply, wherein the system comprises:
- a first connector capable of connecting to the first power supply;
- a second connector capable of connecting to the second power supply;
- at least one processing unit;
- at least one storage medium storing program instructions executable by the at least one processing unit for:
- a. detecting whether voltage at the second power supply is below a reference voltage;
- b. when the voltage at the second power supply is below the reference voltage:
- i. maintaining a first switch in a closed position for receiving power from the first power supply for a first period of time;
- ii. after the first period of time, when the voltage at the second power supply is still below the reference voltage:
- A. performing a shut-down process;
- B. opening the first switch to an open position to stop receiving power from the first power supply;
- c. when the voltage at the second power supply is above the reference voltage, maintaining a first switch in a closed position for receiving power from the first power supply;
- wherein power supplied by the first power supply is more than the power supplied by the second power supply.
Dependencies are inferred from the claim text.