Wireless power and data transmission and reception system

• US 9,368,996 B2
• Filed: 09/09/2011
• Issued: 06/14/2016
• Est. Priority Date: 12/23/2010
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Sang Joon
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Barnett, Joel
• Application Number:
  US13/229,508
• Publication Number:
  US 20120161531A1
• Time in Patent Office: 1,740 Days
• Field of Search: 307/104, 307 1- 3, 307112-113, 365/149, 455/41.1
• US Class Current: 1/1
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• 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 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: H04B 5/24 Inductive coupling
• 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

Provided are an apparatus and a method for simultaneously transmitting and receiving a wireless power and data. A wireless power and data transmission apparatus may include: a modulator configured to modulate first data by adjusting a power amount to be charged in one or more capacitors; a switch controller configured to control one or more switches corresponding the one or more capacitors based on a charging time to charge the one or more capacitors and a transfer time to transfer a power charged in the one or more capacitors and the modulated first data to a source resonator; and a transmitter configured to transmit the charged power and the modulated first data using the source resonator.

Claims

1. A wireless power and data transmission apparatus comprising:

a modulator configured to modulate first data by adjusting a power amount to be charged in one or more capacitors;

a switch controller configured to control one or more switches corresponding to the one or more capacitors based on a charging time to charge the one or more capacitors and a transfer time to transfer a power charged in the one or more capacitors and the modulated first data to a source resonator,

wherein the transfer time comprises;

a first marginal time used when the one or more switches are connected to the charged one or more capacitors;

a transmission time used to transmit the wireless power charged in the one or more capacitors, and the modulated first data; and

a transmitter configured to transmit the charged power and the modulated first data using the source resonator.

2. The apparatus of claim 1, further comprising:

a power input unit configured to charge the one or more capacitors by receiving an input of a power from a power supply apparatus.

3. The apparatus of claim 2, wherein the power input unit is configured to charge the one or more capacitors by receiving an input of a power from a DC power supply apparatus or an AC power supply apparatus.

4. The apparatus of claim 1, further comprising:

a receiver configured to receive modulated second data from a target resonator during the transfer time, using the source resonator.

5. The apparatus of claim 4, further comprising:

a demodulator configured to demodulate the modulated second data based on the power amount stored in the one or more capacitors at a point in time when the transfer time is switched to the charging time.

6. The apparatus of claim 1, wherein the modulator is configured to modulate the first data by quantizing the power amount into N levels.

7. The apparatus of claim 1, wherein the switch controller is configured to control the one or more switches so that overlap between the charging time and the transfer time is avoided for a single capacitor.

8. The apparatus of claim 1, wherein the switch controller is configured to transfer the charged power and the modulated first data to the source resonator by controlling the one or more switches corresponding to each of the charged one or more capacitors at predetermined time intervals based on the transfer time.

9. The apparatus of claim 1, wherein the transfer time comprises

a second marginal time used to open the one or more switches connected to the one or more capacitors after the transmission time terminates.

10. The apparatus of claim 5, wherein the demodulator is configured to demodulate the modulated second data by quantizing the power amount into M levels, based on predetermined mapping information.

11. The apparatus of claim 10, further comprising a sensing unit configured to sense a voltage of the one or more capacitors at the point in time when the transfer time is switched to the charging time,

wherein the demodulator is configured to demodulate the modulated second data based on the sensed voltage.

12. The apparatus of claim 1, wherein the one or more capacitors are arranged in a parallel manner.

13. The apparatus of claim 1, wherein the switch controller is configured to sense the power stored in the one or more capacitors connected to the transmitter.

14. The apparatus of claim 1, wherein the switch controller is configured to control the charging time so that the one or more capacitors are connected to a power input unit in response to a power being discharged lower than a predetermined value.

15. The apparatus of claim 1, further comprising a sensing unit configured to sense a voltage of the one or more capacitors at a point in time when the transfer time is switched to the charging time.

16. A wireless power and data reception apparatus comprising:

a receiver configured to charge one or more capacitors by receiving wireless power and modulated first data using a target resonator;

a switch controller configured to control one or more switches corresponding to the one or more capacitors based on a charging time to charge the one or more capacitors and a transfer time to transfer a power charged in the one or more capacitors and demodulated first data to a target device,

wherein the charging time comprises;

a first marginal time used when the one or more switches are connected to the one or more capacitors;

a reception time used to receive the wireless power charged in the one or more capacitors, and the modulated first data; and

a demodulator configured to demodulate the modulated first data based on a power amount stored in the one or more capacitors at a point in time when the charging time is switched to the transfer time.

17. The apparatus of claim 16, further comprising:

a modulator configured to modulate second data by adjusting the power amount to be charged in the one or more capacitors.

18. The apparatus of claim 17, further comprising:

a transmitter configured to transmit the modulated second data to a source resonator during the charging time using the target resonator.

19. The apparatus of claim 16, further comprising:

a power output unit configured to transfer the power charged in the one or more capacitors and the demodulated first data to the target device.

20. The apparatus of claim 18, wherein the modulator is configured to modulate the second data by quantizing the power amount into M levels.

21. The apparatus of claim 16, wherein the switch controller is configured to control the one or more switches so that overlap between the charging time and the transfer time is avoided for a single capacitor.

22. The apparatus of claim 16, wherein the switch controller is configured to control the charging time and the transfer time by sensing the power stored in the one or more capacitors.

23. The apparatus of claim 18, wherein the switch controller is configured to transfer the modulated second data to the target resonator by controlling the one or more switches corresponding to each of the one or more capacitors at predetermined time intervals based on the charging time.

24. The apparatus of claim 16, wherein the charging time comprises

a second marginal time used to open the one or more switches connected to the one or more capacitors after the reception time terminates.

25. The apparatus of claim 16, wherein the demodulator is configured to demodulate the first data modulated by quantizing the power amount into N levels, based on predetermined mapping information.

26. The apparatus of claim 16, further comprising a sensing unit configured to sense a voltage of the one or more capacitors at the point in time when the charging time is switched to the transfer time,

wherein the demodulator is configured to demodulate the modulated first data based on the sensed voltage.

27. The apparatus of claim 16, wherein the one or more capacitors are arranged in a parallel manner.

28. A wireless power and data transmission method comprising:

modulating first data by adjusting a power amount to be charged in one or more capacitors;

controlling one or more switches corresponding to each of the one or more capacitors based on a charging time to charge the one or more capacitors, and a transfer time to transfer the power charged in the one or more capacitors and the modulated first data to a source resonator,

wherein the charging time comprises;

a first marginal time used when the one or more switches are connected to the one or more capacitors;

a reception time used to receive the wireless power charged in the one or more capacitors, and the modulated first data; and

transmitting the charged power and the modulated first data using the source resonator.

29. The method of claim 28, further comprising:

charging the one or more capacitors by receiving an input of a power from a power supply apparatus.

30. The method of claim 28, further comprising:

receiving the modulated second data from a target resonator during the transfer time, using the source resonator.

31. The method of claim 30, further comprising:

demodulating second data modulated based on the power amount stored in the one or more capacitors at a point in time when the transfer time is switched to the charging time.

32. The method of claim 28, wherein the modulating modulates the first data by quantizing the power amount into N levels.

33. The method of claim 31, wherein the demodulating demodulates the second data modulated by quantizing the power amount into M levels, based on predetermined mapping information.

34. A wireless power and data reception method comprising:

charging one or more capacitors by receiving wireless power and modulated first data using a target resonator;

controlling one or more switches corresponding to each of the one or more capacitors based on a charging time to charge the one or more capacitors, and based on a transfer time to transfer a power charged in the one or more capacitors and demodulated first data to a target device,

wherein the charging time comprises;

a first marginal time used when the one or more switches are connected to the one or more capacitors;

a reception time used to receive the wireless power charged in the one or more capacitors, and the modulated first data; and

demodulating the modulated first data based on a power amount stored in the one or more capacitors at a point in time when the charging time is switched to the transfer time.

35. The method of claim 34, further comprising:

modulating second data by adjusting the power amount to be charged in the one or more capacitors.

36. The method of claim 35, further comprising:

transmitting the modulated second data to a source resonator during the charging time using the target resonator.

37. The method of claim 34, further comprising:

transferring the power charged in the one or more capacitors and the demodulated first data to the target device.

38. The method of claim 35, wherein the modulating modulates the second data by quantizing the power amount into M levels.

39. The method of claim 34, the demodulating demodulates the first data modulated by quantizing the power amount into N levels, based on predetermined mapping information.