Establishing data communication connection using wireless power transmission

Patent metadata

Field	Value
Publication number	US-9094059-B2
Application number	US-201113250212-A
Country	US
Kind code	B2
Filing date	Sep 30, 2011
Priority date	May 27, 2011
Publication date	Jul 28, 2015
Grant date	Jul 28, 2015

Abstract

A power transmitter according to an embodiment disclosed herein can include a power conversion unit configured to form a wireless power signal using power supplied from a power supply unit and receive a modulated wireless power signal containing a packet; a communication unit configured to transmit and receive user data via connection to a power receiver; and a control unit configured to detect the power receiver using the wireless power signal, decode a connection configuration packet transmitted from the power receiver based on the modulated wireless power signal, and establish the connection to the power receiver based on access information included in the connection configuration packet.

First claim

What is claimed is:

1. A power transmitter, comprising:
a power transmission unit including a transmission coil;
a communication unit including an antenna; and
a control processor configured to:
transmit a wireless power signal including access information along a first communication channel using the transmission coil,
detect a power receiver using the transmitted wireless power signal,
receive a modulated connection configuration packet included in a modulated wireless power signal received from the power receiver along the first communication channel,
decode the modulated connection configuration packet, wherein the modulated connection configuration packet includes access information, and
establish a second communication channel based on the access information so the control processor transceives data between the power transmitter and the power receiver through the second communication channel.

2. The power transmitter of claim 1 , wherein the control processor is configured to acquire the access information from the modulated connection configuration packet when a connection between the power transmitter and the power receiver is not established.

3. The power transmitter of claim 1 , wherein the control processor is further configured to request the access information from the power receiver when a connection between the power transmitter and the power receiver is not established.

4. The power transmitter of claim 3 , wherein the access information is requested through the wireless power signal.

5. The power transmitter of claim 1 , wherein the control processor is further configured to detect the power receiver by measuring an amount of power supplied to generate the wireless power signal and determine whether or not the power receiver exists based on a change in the amount of the power measured.

6. The power transmitter of claim 1 , wherein the control processor is further configured to detect the power receiver by generating a detection signal and receive the connection configuration packet in response to the detection signal.

7. The power transmitter of claim 6 , wherein the detection signal is the wireless power signal generated by applying a power signal at a specific operating point.

8. The power transmitter of claim 6 , wherein the modulated connection configuration packet received in response to the detection signal includes a message indicating a strength of the detection signal received by the power receiver.

9. The power transmitter of claim 1 , wherein the control processor is further configured to determine whether or not the communication unit is activated if the power receiver is detected, and activate the communication unit when the communication unit is not activated.

10. The power transmitter of claim 1 , further comprising:
a display configured to display information on power transferred to the power receiver including at least one of an amount of rectified power, a power transfer speed, a power transfer efficiency, a total time of power transfer, a progress of charging, an amount of charged power or information on a power transfer state in the power receiver.

11. A power receiver, comprising:
a power receiving unit including a receiving coil and configured to receive a wireless power signal from a power transmitter along a first communication channel;
a communication unit including an antenna; and
a control processor configured to:
modulate a connection configuration packet using the wireless power signal via the power receiving unit, wherein the connection configuration packet includes access information for connecting to the power transmitter,
transmit the modulated connection configuration packet to the power transmitter through the first communication channel, and
establish a second communication channel based on the access information so the control processor transceives data between the power transmitter and the power receiver through the second communication channel.

12. The power receiver of claim 11 , wherein the control processor is further configured to transmit the modulated connection configuration packet to the power transmitter when a connection between the power transmitter and the power receive is not established.

13. The power receiver of claim 11 , wherein the control processor is further configured to transmit the modulated connection configuration packet to the power transmitter when the access information is requested from the power transmitter.

14. The power receiver of claim 13 , wherein the access information is requested along the first communication channel.

15. The power receiver of claim 11 , wherein the access information is related to authentication or authorization for the data communication along the second communication channel.

16. The power receiver of claim 11 , wherein the second communication channel is a Bluetooth channel, and the access information includes a password or address.

17. The power receiver of claim 16 , wherein the control processor is further configured to establish the second communication channel by performing device pairing with the power transmitter based on a Bluetooth address.

18. The power receiver of claim 11 , wherein the first communication channel is a wireless LAN communication channel, and the access information includes a password, a key or an address used to access the wireless LAN.

19. The power receiver of claim 18 , wherein the control processor is further configured to establish the second communication channel by performing authentication with the power transmitter based on the access information.

20. The power receiver of claim 11 , wherein the control processor is further configured to transmit the modulated connection configuration packet in response to a wireless power signal for detection to the power transmitter when receiving the wireless power signal for detection by the power receiving unit.

21. The power receiver of claim 20 , wherein the modulated connection configuration packet transmitted in response to the wireless signal for detection includes a message indicating a strength of the wireless power signal for detection received by the power receiving unit.

22. The power receiver of claim 11 , wherein the control processor is further configured to determine whether or not the communication unit is activated if the wireless power signal is received by the power receiving unit, and activates the communication unit when the communication unit is not activated.

23. The power receiver of claim 11 , further comprising:
a display configured to display information on power transferred to the power receiver including at least one of an amount of rectified power, a power transfer speed, a power transfer efficiency, a total time of power transfer, a progress of charging, an amount of charged power or a power transfer state by the power receiving unit.

Assignees

• Lee Jaesung
• Seo Jeong Kyo
• Lg Electronics Inc

Inventors

• Lee Jaesung
• Seo Jeong Kyo

Classifications

• H02J4/25

  for transfer of electric power between AC and DC networks, e.g. for supplying the DC section within a load from an AC mains system · CPC title

• H02J7/02

  for charging batteries from AC mains by converters · CPC title

• H02J50/12

  of the resonant type · CPC title

• H04L25/491

  using 1B2B codes · CPC title

• H02J50/80 Primary

  involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices · CPC title