Apparatus for wirelessly communicating with and supplying power to another apparatus, electronic apparatus, and method for controlling power supply

• US 9,654,182 B2
• Filed: 05/07/2014
• Issued: 05/16/2017
• Est. Priority Date: 05/09/2013
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Tsukamoto, Nobuyuki
• Primary Examiner(s): Wang, Albert
• Application Number:
  US14/272,236
• Publication Number:
  US 20140337643A1
• Time in Patent Office: 1,105 Days
• CPC Class Codes: G06F 1/26 Power supply means, e.g. regulation thereof for memories G11C
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A power supply apparatus includes a power supply unit configured to wirelessly supply power to an electronic apparatus, a communication unit configured to wirelessly communicate with the electronic apparatus, a setting unit configured to set the power to be supplied to the electronic apparatus, based on data indicating a category of power receivable by the electronic apparatus, and a control unit configured to perform processing for supplying the power set by the setting unit to the electronic apparatus via the power supply unit.

Claims

1. A power supply apparatus comprising:

a power supply unit configured to wirelessly supply power to an electronic apparatus;

a communication unit configured to wirelessly communicate with the electronic apparatus;

a setting unit configured to set, based on data indicating a category of power receivable by the electronic apparatus received from the electronic apparatus, power to be supplied to the electronic apparatus; and

a control unit configured to perform processing for supplying power set by the setting unit to the electronic apparatus via the power supply unit,

wherein the setting unit sets, based on a set power, a number of times of communication per unit time between the electronic apparatus and the communication unit,

wherein the control unit controls, based on the number of times of communication per unit time set by the setting unit, the communication unit to communicate with the electronic apparatus, and

wherein the number of times of communication per unit time is set higher as the set power is larger.

2. The power supply apparatus according to claim 1, wherein the setting unit sets a first power that is less than or equal a second power, as power to be supplied to the electronic apparatus, and wherein the second power is obtained based on the data.

3. The power supply apparatus according to claim 1, wherein the setting unit sets, based on status data received from the electronic apparatus by the communication unit, power to be supplied to the electronic apparatus.

4. The power supply apparatus according to claim 1, wherein the setting unit sets, based on first data indicating a category of power suppliable by the power supply unit and second data indicating a category of power receivable by the electronic apparatus, power to be supplied to the electronic apparatus.

5. The power supply apparatus according to claim 4, wherein, if a third power obtained based on the first data is greater than a fourth power obtained based on the second data, the setting unit sets a fifth power that is less than or equal to the fourth power, as power to be supplied to the electronic apparatus.

6. The power supply apparatus according to claim 4, wherein, if a sixth power obtained based on the second data is greater than a seventh power obtained based on the first data, the setting unit sets an eighth power that is less than or equal to the seventh power, as power to be supplied to the electronic apparatus.

7. The power supply apparatus according to claim 1, wherein the power supply unit wirelessly supplies, based on a frequency of 13.56 MHz, power to the electronic apparatus.

8. The power supply apparatus according to claim 1, wherein the power supply unit wirelessly supplies, based on a frequency of 6.78 MHz, the power to the electronic apparatus.

9. The power supply apparatus according to claim 1,

wherein the control unit performs processing for detecting a foreign object, and

wherein, if the foreign object is detected, the control unit performs processing for restricting power supply to the electronic apparatus via the power supply unit.

10. The power supply apparatus according to claim 1, wherein the control unit controls a communication interval of the communication unit, and

wherein the communication interval is set shorter as the set power is larger.

11. An electronic apparatus comprising:

a power receiving unit configured to wirelessly receive power from a power supply apparatus;

a communication unit configured to wirelessly communicate with the power supply apparatus;

a memory configured to store data indicating a category of power receivable by the power receiving unit;

a control unit configured to control the communication unit to transmit the data to the power supply apparatus if authentication with the power supply apparatus is completed; and

a generation unit configured to generate, based on power supplied from the power supply apparatus via the power receiving unit, direct current power after the data is transmitted to the power supply apparatus,

wherein the control unit communicates with the power supply apparatus at a predetermined number of times per unit time via the communication unit, and

wherein the number of times per unit time is higher as the power received via the power receiving unit is larger.

12. The electronic apparatus according to claim 11, wherein the control unit controls the communication unit to transmit the data to the power supply apparatus to allow the power supply apparatus to determine power to be supplied to the electronic apparatus.

13. A method comprising:

wirelessly supplying power to an electronic apparatus;

wirelessly communicating with the electronic apparatus;

setting, based on data indicating a category of power receivable by the electronic apparatus, power to be supplied to the electronic apparatus;

performing processing for supplying set power to electronic apparatus;

setting, based on a set power, a number of times of communication per unit time between the electronic apparatus and the communication unit; and

controlling, based on the number of times of communication per unit time set by the setting unit, the communication unit to communicate with the electronic apparatus,

wherein the number of times of communication per unit time is set higher as the set power is larger.

14. A method comprising:

wirelessly receiving power from a power supply apparatus;

wirelessly communicating with the power supply apparatus at a predetermined number of times per unit time;

transmitting data indicating a category of power receivable by the electronic apparatus to the power supply apparatus if authentication with the power supply apparatus is completed; and

generating, based on power supplied from the power supply apparatus, direct current power after the data is transmitted to the power supply apparatus;

wherein the number of times per unit time is higher as the received power is larger.

15. A non-transitory computer-readable storage medium storing computer executable instructions for causing a computer to execute a method, the method comprising:

wirelessly supplying power to an electronic apparatus;

wirelessly communicating with the electronic apparatus;

setting, based on data indicating a category of power receivable by the electronic apparatus received from the electronic apparatus, power to be supplied to the electronic apparatus;

performing processing for supplying set power to the electronic apparatus;

setting, based on a set power, a number of times of communication per unit time between the electronic apparatus and the communication unit, and

controlling, based on the number of times of communication per unit time set by the setting unit, the communication unit to communicate with the electronic apparatus,

wherein the number of times of communication per unit time is set higher as the set power is larger.

16. A non-transitory computer-readable storage medium storing computer executable instructions for causing a computer to execute a method, the method comprising:

wirelessly receiving power from a power supply apparatus;

wirelessly communicating with the power supply apparatus at a predetermined number of times per unit time;

transmitting data indicating a category of power receivable by the electronic apparatus to the power supply apparatus if authentication with the power supply apparatus is completed; and

generating, based on power supplied from the power supply apparatus, direct current power after the data is transmitted to the power supply apparatus,

wherein the number of times per unit time is higher as the received power is larger.