ELECTRONIC APPARATUS, CONTROL METHOD AND RECORDING MEDIUM

• US 20130200843A1
• Filed: 02/04/2013
• Published: 08/08/2013
• Est. Priority Date: 02/06/2012
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Tanabe, Akihiro
• Granted Patent: US 9,595,838 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• 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 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• 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 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• 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: 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
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 90/12 Electric charging stations

Abstract

An electronic apparatus includes a power receiving unit that receives power from a power transmitting apparatus wirelessly, a connection unit that connects an external apparatus, a detection unit that detects power received by the power receiving unit, and a control unit that changes a mode of the electronic apparatus to a first mode after the detection unit detects that power received by the power receiving unit is equal to or lower than a predetermined value if the electronic apparatus is in a second mode.

Claims

1. An electronic apparatus comprising:

a power receiving unit that receives power from a power transmitting apparatus wirelessly;

a connection unit that connects an external apparatus;

a detection unit that detects power received by the power receiving unit; and

a control unit that changes a mode of the electronic apparatus to a first mode after the detection unit detects that power received by the power receiving unit is equal to or lower than a predetermined value if the electronic apparatus is in a second mode, wherein the first mode is used for performing at least one of a predetermined process and a charging process using power received from the external apparatus, and the second mode is used for performing at least one of the predetermined process and the charging process using power received from the power transmitting apparatus.

2. The electronic apparatus according to claim 1, wherein the control unit does not perform the predetermined process and the charging process using power received from the power transmitting apparatus after the detection unit detects that power received by the power receiving unit is equal to or lower than the predetermined value if the electronic apparatus is in the second mode.

3. The electronic apparatus according to claim 1, wherein the control unit does not change the mode of the electronic apparatus to the first mode before the detection unit detects that power received by the power receiving unit is equal to or lower than the predetermined value if the electronic apparatus is in the second mode.

4. The electronic apparatus according to claim 1, wherein the control unit does not change the mode of the electronic apparatus to the second mode until the electronic apparatus and the external apparatus are disconnected if the electronic apparatus is in the first mode.

5. The electronic apparatus according to claim 1, wherein the control unit that changes the mode of the electronic apparatus to the second mode after the detection unit detects that power received by the power receiving unit is higher than the predetermined value if the electronic apparatus is in the first mode.

6. The electronic apparatus according to claim 1, wherein the control unit does not change the mode of the electronic apparatus to the second mode before the detection unit detects that power received by the power receiving unit is higher than the predetermined value if the electronic apparatus is in the first mode.

7. The electronic apparatus according to claim 1, further comprising a first communication unit that communicates with the external apparatus, wherein the control unit does not change the mode of the electronic apparatus to the second mode if the electronic apparatus is in the first mode and the first communication unit transmits data to the external apparatus.

8. The electronic apparatus according to claim 1, further comprising a first communication unit that communicates with the external apparatus, wherein the control unit does not change the mode of the electronic apparatus to the second mode if the electronic apparatus is in the first mode and the first communication unit receives data from the external apparatus.

9. The electronic apparatus according to claim 1, further comprising an error detection unit that detects an error relating to a transmission of power from the power transmitting apparatus, wherein the control unit changes the mode of the electronic apparatus to the first mode if the electronic apparatus is in the second mode and the error detection unit detects the error.

10. The electronic apparatus according to claim 1, further comprising a second communication unit that communicates with the power transmitting apparatus, wherein the second communication unit transmits predetermined data to the power transmitting apparatus if the electronic apparatus is in the first mode, and the predetermined data includes data for indicating that the electronic apparatus uses power received from the external apparatus so as to perform at least one of the predetermined process and the charging process.

11. The electronic apparatus according to claim 1, further comprising a second communication unit that communicates with the power transmitting apparatus, wherein the second communication unit transmits predetermined data to the power transmitting apparatus if the electronic apparatus is in the first mode, and the predetermined data includes data for indicating that the electronic apparatus does not use power received from the power transmitting apparatus so as to perform at least one of the predetermined process and the charging process.

12. The electronic apparatus according to claim 1, further comprising a second communication unit that communicates with the power transmitting apparatus, wherein the second communication unit continues to communicate with the power transmitting apparatus after the electronic apparatus is changed to the first mode from the second mode.

13. The electronic apparatus according to claim 1, wherein the control unit changes the mode of the electronic apparatus to the second mode before the detection unit detects that power received by the power receiving unit is higher than the predetermined value if the electronic apparatus is in the first mode and a remaining capacity of a battery is equal to or more than a predetermined remaining capacity.

14. The electronic apparatus according to claim 1, wherein the control unit does not change the mode of the electronic apparatus to the second mode until the detection unit detects that power received by the power receiving unit is higher than the predetermined value if the electronic apparatus is in the first mode and a remaining capacity of a battery is not more than a predetermined remaining capacity.

15. The electronic apparatus according to claim 1, further comprising a resonant circuit that sets a frequency of the power receiving unit to a predetermined frequency.

16. The electronic apparatus according to claim 1, wherein the predetermined process includes at least one of a process relating to wireless communication and a process relating to reproduction.

17. The electronic apparatus according to claim 1, wherein the electronic apparatus includes an apparatus based on a Near Field Communication (NFC) standard.

18. The electronic apparatus according to claim 1, wherein the external apparatus is different from a battery.

19. A control method for controlling an electronic apparatus, wherein the electronic apparatus has a connection unit that connects an external apparatus, the control method comprising:

receiving power from a power transmitting apparatus wirelessly;

detecting power received from the power transmitting apparatus; and

changing a mode of the electronic apparatus to a first mode after power received from the power transmitting apparatus becomes equal to or lower than a predetermined value if the electronic apparatus is in a second mode, wherein the first mode is used for performing at least one of a predetermined process and a charging process using power received from the external apparatus, and the second mode is used for performing at least one of the predetermined process and the charging process using power received from the power transmitting apparatus.

20. A computer-readable recording medium that stores a program for causing a computer to execute a control method for controlling an electronic apparatus, wherein the electronic apparatus has a connection unit that connects an external apparatus, the control method comprising:

receiving power from a power transmitting apparatus wirelessly;

detecting power received from the power transmitting apparatus; and

changing a mode of the electronic apparatus to a first mode after power received from the power transmitting apparatus becomes equal to or lower than a predetermined value if the electronic apparatus is in a second mode, wherein the first mode is used for performing at least one of a predetermined process and a charging process using power received from the external apparatus, and the second mode is used for performing at least one of the predetermined process and the charging process using power received from the power transmitting apparatus.