Electronic apparatus and control method for wirelessly receiving power from a power supply apparatus

• US 9,455,592 B2
• Filed: 10/28/2013
• Issued: 09/27/2016
• Est. Priority Date: 10/30/2012
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Kosugi, Takamichi
• Primary Examiner(s): Tso, Edward
• Application Number:
  US14/064,906
• Publication Number:
  US 20140117931A1
• Time in Patent Office: 1,065 Days
• Field of Search: 320/107, 320/108, 320/114, 320/115, 307/104
• US Class Current: 1/1
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence

Abstract

An electronic apparatus includes a power receiving unit configured to wirelessly receive power from an external apparatus, a resonance unit configured to set at least one of a resonant frequency of the power receiving unit and a characteristic value of the electronic apparatus, the characteristic value indicating a resonance characteristic of the electronic apparatus, and a control unit configured to, before the electronic apparatus performs a predetermined operation, detect data indicating power for performing the predetermined operation, and control the resonance unit to set at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic apparatus based on the detected data, wherein the control unit is configured to perform the predetermined operation by using power received based on the at least one of the resonant frequency and the characteristic value of the electronic apparatus set by the resonance unit.

Claims

1. An electronic apparatus comprising:

a power receiving unit configured to wirelessly receive power from an external apparatus;

a resonance unit configured to set at least one of a resonant frequency of the power receiving unit and a characteristic value of the electronic apparatus, the characteristic value indicating a resonance characteristic of the electronic apparatus; and

a control unit configured to, before the electronic apparatus performs a predetermined operation, detect data indicating power for performing the predetermined operation, and control the resonance unit to set at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic apparatus based on the detected data,

wherein the control unit is configured to perform the predetermined operation by using power received based on the at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic apparatus set by the resonance unit.

2. The electronic apparatus according to claim 1, further comprising a charging unit configured to perform a charging operation for charging a battery connected to the electronic apparatus,

wherein the control unit is configured to, before the charging operation is performed, control the resonance unit to set at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic apparatus based on power for performing the charging operation, and

wherein the charging unit is configured to perform the charging operation by using the power received based on the at least one of the resonant frequency and the characteristic value of the electronic apparatus set by the resonance unit.

3. The electronic apparatus according to claim 2, further comprising a determination unit configured to determine whether the power for performing the predetermined operation and the charging operation is lower than predetermined power,

wherein the control unit is configured to control the resonance unit to set at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic apparatus based on the determination of the determination unit.

4. The electronic apparatus according to claim 3, wherein the control unit is configured to, if the power for performing the predetermined operation and the charging operation is lower than the predetermined power, control the resonance unit to set at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic apparatus based on the power for performing the predetermined operation and the charging operation.

5. The electronic apparatus according to claim 3, wherein the control unit is configured to, if the power for performing the predetermined operation and the charging operation is not lower than the predetermined power, control the resonance unit to set at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic apparatus based on the power for performing the predetermined operation.

6. The electronic apparatus according to claim 3, wherein the control unit is configured to, if the power for performing the predetermined operation and the charging operation is not lower than the predetermined power, perform control to perform the predetermined operation without performing the charging operation.

7. The electronic apparatus according to claim 3, wherein the control unit is configured to, if the power for performing the predetermined operation and the charging operation is not lower than the predetermined power and the power for performing the predetermined operation is lower than the predetermined power, control the resonance unit to set at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic apparatus based on the power for performing the predetermined operation.

8. The electronic apparatus according to claim 3, wherein the control unit is configured to, if the power for performing the predetermined operation and the charging operation is not lower than the predetermined power, the power for performing the predetermined operation is lower than the predetermined power, and the battery supplies power, control the resonance unit to set at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic apparatus based on the predetermined power.

9. The electronic apparatus according to claim 3, wherein the control unit is configured to, if the power for performing the predetermined operation and the charging operation is not lower than the predetermined power, the power for performing the predetermined operation is not lower than the predetermined power, and the battery does not supply power, perform control not to perform the predetermined operation.

10. The electronic apparatus according to claim 1, wherein the characteristic value of the electronic apparatus is a quality factor of the electronic apparatus.

11. A method for controlling an electronic apparatus including a power receiving unit configured to wirelessly receive power from an external apparatus, the method comprising:

before the electronic apparatus performs a predetermined operation, detecting data indicating power for performing the predetermined operation;

before the electronic apparatus performs the predetermined operation, setting at least one of a resonant frequency of the power receiving unit and a characteristic value of the electronic apparatus based on the detected data, the characteristic value indicating a resonance characteristic of the electronic apparatus; and

performing the predetermined operation by using power received based on the set at least one of the resonant frequency and characteristic value of the electronic apparatus.

12. A non-transitory computer-readable storage medium storing a computer program for controlling an electronic apparatus including a power receiving unit configured to wirelessly receive power from an external apparatus, the computer program comprising:

before the electronic apparatus performs a predetermined operation, detecting data indicating power for performing the predetermined operation;

before the electronic apparatus performs the predetermined operation, setting at least one of a resonant frequency of the power receiving unit and a characteristic value of the electronic apparatus based on the detected data, the characteristic value indicating a resonance characteristic of the electronic apparatus; and

performing the predetermined operation by using power received based on the set at least one of the resonant frequency and characteristic value of the electronic apparatus.

13. An electronic apparatus comprising:

a power receiving unit configured to wirelessly receive power from an external apparatus;

a resonance unit configured to set at least one of a resonant frequency of the power receiving unit and a characteristic value of the electronic apparatus, the characteristic value indicating a resonance characteristic of the electronic apparatus; and

a control unit configured to, before the electronic apparatus performs a predetermined operation, determine power for performing the predetermined operation, and control the resonance unit to set at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic apparatus based on the determined power,

wherein the control unit is configured to perform the predetermined operation by using power received in a state where the at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic apparatus is set by the resonance unit.

14. The electronic apparatus according to claim 13, further comprising a charging unit configured to perform a charging operation for charging a battery connected to the electronic apparatus,

wherein the control unit is configured to, before the charging operation is performed, control the resonance unit to set at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic unit based on power for performing the charging operation, and

wherein the charging unit is configured to perform the charging operation by using the power received based on the at least one of the resonant frequency and the characteristic value of the electronic apparatus set by the resonance unit.

15. The electronic apparatus according to claim 14, wherein the control unit further determines whether the power for performing the predetermined operation and the charging operation is lower than predetermined power, and

wherein the control unit is configured to control the resonance unit to set at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic apparatus based on the determination of the control unit.

16. The electronic apparatus according to claim 15, wherein the control unit is configured to, if the power for performing the predetermined operation and the charging operation is lower than the predetermined power, control the resonance unit to set at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic apparatus based on the power for performing the predetermined operation and the charging operation.

17. The electronic apparatus according to claim 15, wherein the control unit is configured to, if the power for performing the predetermined operation and the charging operation is not lower than the predetermined power, control the resonance unit to set at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic apparatus based on the power for performing the predetermined operation.

18. The electronic apparatus according to claim 15, wherein the control unit is configured to, if the power for performing the predetermined operation and the charging operation is not lower than the predetermined power, perform control to perform the predetermined operation without performing the charging operation.

19. A method for controlling an electronic apparatus including a power receiving unit configured to wirelessly receive power from an external apparatus, the method comprising:

before the electronic apparatus performs a predetermined operation, determining power for performing the predetermined operation;

before the electronic apparatus performs the predetermined operation, setting at least one of a resonant frequency of the power receiving unit and a characteristic value of the electronic apparatus based on the determined power, the characteristic value indicating a resonance characteristic of the electronic apparatus; and

performing the predetermined operation by using power received in a state where the at least one of the resonant frequency and characteristic value of the electronic apparatus is set.

20. A non-transitory computer-readable storage medium storing a computer program for controlling an electronic apparatus including a power receiving unit configured to wirelessly receive power from an external apparatus, the computer program comprising:

before the electronic apparatus performs a predetermined operation, determining power for performing the predetermined operation;

before the electronic apparatus performs the predetermined operation, setting at least one of a resonant frequency of the power receiving unit and a characteristic value of the electronic apparatus based on the determined power, the characteristic value indicating a resonance characteristic of the electronic apparatus; and

performing the predetermined operation by using power received in a state where the at least one of the resonant frequency and characteristic value of the electronic apparatus is set.