Power supply device, electronic device, control method, and recording medium

Patent metadata

Field	Value
Publication number	US-9825466-B2
Application number	US-201313753345-A
Country	US
Kind code	B2
Filing date	Jan 29, 2013
Priority date	Feb 1, 2012
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

A power supply device includes a power supply unit that wirelessly supplies power, a communication unit that communicates with an electronic device, and a control unit that controls the communication unit to transmit a predetermined data to the electronic device based on whether or not the electronic device is connected to an external device supplying power to the electronic device.

First claim

What is claimed is:

1. A power supply device comprising:
a power supply unit that wirelessly supplies power;
a communication unit that communicates with an electronic device different from the power supply device; and
a control unit that controls the communication unit to transmit predetermined data to the electronic device based on whether or not the electronic device is in a state that enables the electronic device to receive power from an external device through a connection between the electronic device and the external device, the external device being different from the power supply device,
wherein the predetermined data includes one of first data and a second data, the first data is used for causing the electronic device to receive power from the external device, and the second data is used for causing the electronic device to receive power from the power supply device, and
wherein the external device includes a device for supplying power to the electronic device.

2. The power supply device according to claim 1 , wherein the control unit that controls the communication unit to transmit the first data to the electronic device if the electronic device and the external device are connected.

3. The power supply device according to claim 2 , wherein the control unit continues to communicate with the electronic device after the first data is transmitted to the electronic device.

4. The power supply device according to claim 1 , wherein the control unit controls the communication unit to transmit the second data to the electronic device if the electronic device and the external device are not connected.

5. The power supply device according to claim 1 , wherein the control unit controls the power supply unit to limit power for supplying to the electronic device if the electronic device and the external device are connected.

6. The power supply device according to claim 1 , wherein the control unit controls the communication unit to transmit the predetermined data to the electronic device based on a first level and a second level if the electronic device and the external device are connected, and
wherein the first level indicates a level of power supplied from the power supply device to the electronic device, and the second level indicates a level of power supplied from the external device to the electronic device.

7. The power supply device according to claim 6 , wherein the control unit controls the communication unit to transmit the second data to the electronic device if the first level is higher than the second level.

8. The power supply device according to claim 6 , wherein the control unit controls the communication unit to transmit the first data to the electronic device if the first level is not higher than the second level.

9. The power supply device according to claim 1 , wherein the control unit controls the power supply unit to supply predetermined power to the electronic device if the electronic device and the external device are not connected, and the predetermined power is used for charging a battery.

10. The power supply device according to claim 1 , further comprising
a detection unit that detects one or more electronic devices, wherein, if the detection unit detects a plurality of electronic devices, the control unit controls the communication unit to transmit third command to the plurality of electronic devices, and wherein the third command is used for controlling not to receive power from the power supply device.

11. The power supply device according to claim 1 , further comprising
a detection unit that detects one or more electronic devices, and wherein the control unit performs a process for controlling the communication unit to transmit the predetermined data if a number of electronic devices detected by the detection unit is changed.

12. The power supply device according to claim 1 , wherein the external device is different from a battery.

13. The power supply device according to claim 1 , wherein the external device includes an AC adapter.

14. The power supply device according to claim 1 , wherein the external device includes a device that can supply power to the electronic device based on Universal Serial Bus (USB).

15. An electronic device comprising:
a connection unit that connects to an external device different from the electronic device;
a power receiving unit that wirelessly receives power from a power supply device different from the electronic device;
a communication unit that communicates with the power supply device; and
a control unit that controls the communication unit so as to transmit predetermined information to the power supply device,
wherein the predetermined information indicates whether or not the connection unit and the external device are connected to each other, a level of power received by the electronic device from the power supply device, and a level of power supplied to the electronic device by the external device, and
wherein the external device includes a device for supplying power to the electronic device via the connection unit.

16. A method for controlling a power supply device, the method comprising:
wirelessly supplying power;
communicating with an electronic device different from the power supply device; and
transmitting predetermined data to the electronic device based on whether or not the electronic device is in a state that enables the electronic device to receive power from an external device through a connection between the electronic device and the external device, the external device being different from the power supply device,
wherein the predetermined data includes one of first data and a second data, the first data is used for causing the electronic device to receive power from the external device, and the second data is used for causing the electronic device to receive power from the power supply device, and
wherein the external device includes a device for supplying power to the electronic device.

17. A method for controlling an electronic device, wherein the electronic device includes a connection unit that connects to an external device different from the electronic device, the method comprising:
wirelessly receiving power;
communicating with a power supply device different from the electronic device; and
transmitting predetermined information to the power supply device,
wherein the predetermined information indicates whether or not the connection unit and an external device are connected to each other, a level of power received by the electronic device from the power supply device, and a level of power supplied to the electronic device by the external device, and
wherein the external device includes a device for supplying power to the electronic device via the connection unit.

18. A recording medium recording a program for causing a computer to execute a method for controlling a power supply device, the method comprising:
wirelessly supplying power;
communicating with an electronic device different from the power supply device; and
transmitting predetermined data to the electronic device based on whether or not the electronic device is in a state that enables the electronic device to receive power from an external device through a connection between the electronic device and the external device, the external device being different from the power supply device,
wherein the predetermined data includes one of first data and a second data, the first data is used for causing the electronic device to receive power from the external device, and the second d

Assignees

• Canon Kk

Inventors

• Fukaya Yudai

Classifications

• H02J7/947

  in response to integrated charge or discharge current · CPC title

• H02J7/42

  with electronic devices having internal batteries, e.g. mobile phones · CPC title

• H02J7/685 Primary

  using connection detecting circuits (H02J7/68 takes precedence) · CPC title

• H02J7/00

  Circuit arrangements for charging or discharging batteries or for supplying loads from batteries · CPC title

• H02J50/12

  of the resonant type · CPC title