Power transmitting apparatus, power receiving apparatus, control methods thereof, and program

• US 10,601,229 B2
• Filed: 09/25/2018
• Issued: 03/24/2020
• Est. Priority Date: 04/19/2013
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Takahashi, Naoto, Eguchi, Tadashi
• Primary Examiner(s): Luu, An T
• Application Number:
  US16/141,823
• Publication Number:
  US 20190027940A1
• Time in Patent Office: 546 Days
• 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 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00045 Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source

Abstract

A power transmitting apparatus that transmits power to a power receiving apparatus executes intermittent wireless transmission of power. The power transmitting apparatus operates according to one of a first power transmitting method including detecting a signal load-modulated by the power receiving apparatus using an ID in response to the transmitted power during the intermittent transmission and a second power transmitting method including transmitting the power having modulated the power according to an ID determined in advance so that the power receiving apparatus detects the ID determined in advance.

Claims

1. A power transmitting apparatus that transmits power to a power receiving apparatus, the power transmitting apparatus comprising:

a power transmission unit configured to execute, using a first antenna, first wireless power transmission intermittently, second wireless power transmission whose power transmission period is longer than a power transmission period of the first wireless power transmission, and third wireless power transmission whose power is larger than power of the first wireless power transmission and power of the second wireless power transmission;

a detection unit configured to detect an object; and

a communication unit configured to execute, using a second antenna different from the first antenna, communication with the power receiving apparatus,

wherein the power transmission unit starts the second wireless power transmission based on that the detection unit detects the object while the first power transmission is executed, and

wherein, in a case where the object is the power receiving apparatus, the power transmission unit executes the third wireless power transmission based on the communication by the communication unit, after the second wireless power transmission is started.

2. The power transmitting apparatus according to claim 1, further comprising:

a receiving unit configured to receive a signal received from the power receiving apparatus while the second wireless power transmission is executed,

wherein the communication unit executes the communication based on that the signal received by the receiving unit satisfies a predetermined condition.

3. The power transmitting apparatus according to claim 2, further comprising:

a determination unit configured to determine whether or not an ID obtained from the signal matches a predetermined ID, and

wherein the communication unit executes the communication based on that the determination unit determines that the ID obtained from the signal matches the predetermined ID.

4. The power transmitting apparatus according to claim 3, further comprising:

a notification unit configured to provide an ID match notification to the power receiving apparatus based on that the determination unit has determined that the ID obtained from the signal matches the predetermined ID.

5. The power transmitting apparatus according to claim 1,

wherein the communication unit communicates a value related to power received by the power receiving apparatus, and

wherein the power transmitting apparatus determines whether or not to execute the third power transmission based on the value.

6. The power transmitting apparatus according to claim 5, wherein the power transmitting apparatus determines to execute the third power transmission based on that the value is greater than or equal to a threshold.

7. The power transmitting apparatus according to claim 1, wherein the detection unit detects impedance change.

8. The power transmitting apparatus according to claim 7, further comprising:

a determination unit configured to determine whether or not the object is the power receiving apparatus based on the impedance change detected by the detection unit.

9. The power transmitting apparatus according to claim 8, further comprising:

a display unit configured to display a message based on that the determination unit determines that the object is not the power receiving apparatus.

10. The power transmitting apparatus according to claim 3, wherein the ID is determined in device authentication carried out between the power transmitting apparatus and the power receiving apparatus.

11. The power transmitting apparatus according to claim 1, wherein the communication unit communicates by the Bluetooth®

.

12. The power transmitting apparatus according to claim 2, wherein the signal is load modulated.

13. A control method for a power transmitting apparatus that transmits power to a power receiving apparatus, the method comprising:

executing, using a first antenna, first wireless power transmission intermittently, second wireless power transmission whose power transmission period is longer than a power transmission period of the first wireless power transmission, and third wireless power transmission whose power is larger than power of the first wireless power transmission and power of the second wireless power transmission;

detecting an object; and

executing, using a second antenna different from the first antenna, communication with the power receiving apparatus,

wherein the second wireless power transmission is started based on that the object is detected while the first power transmission is executed, and

wherein, in a case where the object is the power receiving apparatus, the third wireless power transmission is executed based on the communication by the communication unit, after the second wireless power transmission is started.

14. A non-transitory computer-readable storage medium storing a program that causes a computer to:

executing, using a first antenna, first wireless power transmission intermittently, second wireless power transmission whose power transmission period is longer than a power transmission period of the first wireless power transmission, and third wireless power transmission whose power is larger than power of the first wireless power transmission and power of the second wireless power transmission;

detecting an object; and

executing, using a second antenna different from the first antenna, communication with the power receiving apparatus,

wherein the second wireless power transmission is started based on that the object is detected while the first power transmission is executed, and

wherein, in a case where the object is the power receiving apparatus, the third wireless power transmission is executed based on the communication by the communication unit, after the second wireless power transmission is started.