COMMUNICATION DEVICE AND CONTROL METHOD THEREFOR

• US 20150171933A1
• Filed: 02/23/2015
• Published: 06/18/2015
• Est. Priority Date: 04/04/2008
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Hamada, Masashi
• Granted Patent: US 9,444,521 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 50/10 using inductive coupling
• 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 5/00 Near-field transmission systems, e.g. inductive or capacitive transmission systems
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

The object of the invention is to achieve stable operation of a communication device, which includes an information transmission means and a power transmission means while maintaining communication quality. A mobile device of the invention has an information transmission means for executing non-contact transmission, a power transmission means, a first control means for controlling the information transmission means to repeat an active period and a sleep period, and a second control means for controlling the power transmission means to transmit a power during the sleep period.

Claims

1-14. -14. (canceled)

15. A power transmission apparatus comprising:

a communication unit configured to communicate wirelessly with a power reception apparatus, during a period capable of data transfer, information indicating a duration of power transmission to be performed during a period of no data transfer; and

a power transmission unit configured to, after the period capable of data transfer, transmit power wirelessly to the power reception apparatus during the period of no data transfer in accordance with the information communicated by the communication unit.

16. The power transmission apparatus according to claim 15, wherein the communication unit starts to communicate the information and the power transmission unit starts to transmit power in a case where the power transmission apparatus approaches the power receiving apparatus.

17. The power transmission apparatus according to claim 15, wherein the communication unit transmits the information to the power reception apparatus.

18. The power transmission apparatus according to claim 15, wherein the communication unit receives the information from the power reception apparatus.

19. The power transmission apparatus according to claim 15, wherein the power transmission apparatus does not transmit power in a case where the communication unit receives from the power reception apparatus a notification indicating that power reception is not required.

20. The power transmission apparatus according to claim 15, further comprising:

a coil; and

a switch that causes the coil to connect exclusively with the communication unit or the power transmission unit,

wherein the switch causes the coil, based on the information communicated by the communication unit, to connect with the communication unit during the period capable of data transfer, and to connect to the power transmission unit during the period of no data transfer.

21. The power transmission apparatus according to claim 15, wherein the communication unit communicates wirelessly with Near Field Communication (NFC).

34. The power transmission apparatus according to claim 15, wherein the communication unit communicates with the power reception apparatus during a period capable of data transfer in a wireless transmission cycle, and the power transmission unit transmits power to the power reception apparatus during the period of no data transfer in the wireless transmission cycle.

22. A power reception apparatus comprising:

a communication unit configured to communicate wirelessly with a power transmission apparatus, during a period capable of data transfer, information indicating a duration of power transmission to be performed during a period of no data transfer; and

a power reception unit configured to, after the period capable of data transfer, receive power wirelessly from the power transmission apparatus during the period of no data transfer in accordance with the information communicated by the communication unit.

23. The power reception apparatus according to claim 22, wherein the communication unit starts to communicate the information and the power reception unit starts to receive power in a case where the power transmission apparatus approaches the power receiving apparatus.

24. The power reception apparatus according to claim 22, wherein the communication unit transmits the information to the power transmission apparatus.

25. The power reception apparatus according to claim 22, wherein the communication unit receives the information from the power transmission apparatus.

26. The power reception apparatus according to claim 22, wherein the communication unit transmits a notification indicating the power reception is not required if the power reception apparatus is in a state where power reception is not required.

27. The power reception apparatus according to claim 22, further comprising:

a determination unit configured to determine whether the power reception apparatus is in a state where power reception is required or not based on at least one of charging condition of a battery, a power of battery, and a temperature of a battery.

28. The power reception apparatus according to claim 22, further comprising:

a coil; and

a switch that causes the coil to connect exclusively with the communication unit or the power reception unit,

wherein the switch causes the coil to connect with the communication unit during the period capable of data transfer, and causes the coil to connect to the power reception unit during the period of no data transfer.

29. The power reception apparatus according to claim 22, wherein the communication unit communicates wirelessly with Near Field Communication (NFC).

30. A control method for a power transmission apparatus comprising:

a communication step of communicating wirelessly with a power reception apparatus, during a period capable of data transfer, information indicating a duration of power transmission to be performed during a period of no data transfer; and

a power transmission step for, after the period capable of data transfer, transmitting power wirelessly to the power reception apparatus during the period of no data transfer in accordance with the information communicated in the communication step.

31. A computer-readable storage medium for storing a program which causes a computer to execute the control method according to claim 30.

32. A control method for a power reception apparatus comprising:

a communication step for communicating wirelessly with a power transmission apparatus, during a period capable of data transfer, information indicating a duration of power transmission to be performed during a period of no data transfer; and

a power reception step for, after the period capable of data transfer, receiving power wirelessly from the power transmission apparatus during the period of no data transfer in accordance with the information communicated in the communication step.

33. A computer-readable storage medium for storing a program which causes a computer to execute the control method according to claim 32.