Electronic apparatus configured to wirelessly receive power from external apparatus

• US 10,084,320 B2
• Filed: 09/18/2015
• Issued: 09/25/2018
• Est. Priority Date: 09/22/2014
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Tanabe, Akihiro, Fukaya, Yudai
• Primary Examiner(s): Shin, Jeffrey
• Application Number:
  US14/858,485
• Publication Number:
  US 20160087454A1
• Time in Patent Office: 1,103 Days
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• 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

An electronic apparatus includes a power reception unit configured to wirelessly receive power from a power supply apparatus, a communication unit configured to receive a detection period, during which the power supply apparatus detects a foreign object, from the power supply apparatus and to notify a control unit of the detection period, the detection period, and the control unit configured to perform a process for keeping power consumed by the electronic apparatus in predetermined range constant until the detection period has elapsed.

Claims

1. An electronic apparatus comprising:

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

a load configured to receive the power from the power reception unit;

a communication unit configured to receive a detection period, during which the power supply apparatus detects a foreign object, from the power supply apparatus and to notify a control unit of the detection period; and

the control unit configured to perform a process for keeping power consumed by the electronic apparatus in a predetermined range until the detection period elapses,

wherein the process keeps the load constant by keeping an impedance of the load at a constant value.

2. The electronic apparatus according to claim 1, wherein the process is a process for keeping power consumed by the electronic apparatus constant until the detection period elapses.

3. The electronic apparatus according to claim 1, wherein the load includes at least one of an imaging unit, a reproduction unit, and a recording unit.

4. The electronic apparatus according to claim 1, further comprising a charging unit configured to charge a battery with use of the power supplied from the power reception unit,

wherein the process is a process for preventing a connection between the power reception unit and the charging unit.

5. The electronic apparatus according to claim 1, wherein the control unit performs the process before higher power than power for communicating with the communication unit is supplied from the power supply apparatus.

6. The electronic apparatus according to claim 1, wherein the detection period is set according to the power supplied from the power supply apparatus.

7. The electronic apparatus according to claim 1, wherein the detection period is set according to a state regarding the electronic apparatus.

8. The electronic apparatus according to claim 1, wherein the predetermined range is a range in which the power supply apparatus does not detect a foreign object when the power consumed by the electronic apparatus changes during the foreign object detection period.

9. A method for controlling an electronic apparatus having a load, the method comprising:

receiving power wirelessly from a power supply apparatus;

providing the power to the load;

communicating with the power supply apparatus to acquire a detection period during which the power supply apparatus detects a foreign object; and

performing a process for keeping power consumed by the electronic apparatus in a predetermined range until the detection period has elapsed,

wherein the process keeps the load constant by keeping an impedance of the load at a constant value.