Wireless power transmitter, wireless power receiver and control method thereof

• US 10,069,348 B2
• Filed: 04/30/2014
• Issued: 09/04/2018
• Est. Priority Date: 05/03/2013
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Byun, Kang-Ho, Lee, Kyung-Woo, Lee, Ho-Seong, Kwon, Hyuk-Choon, Jung, Soo-Yeon, Jung, Hee-Won
• Primary Examiner(s): Borroto, Alfonso Perez
• Application Number:
  US14/265,861
• Publication Number:
  US 20140327319A1
• Time in Patent Office: 1,588 Days
• Field of Search: 307104
• CPC Class Codes: H02J 50/12 of the resonant type
• 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 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04W 76/14 Direct-mode setup

Abstract

A control method for transmitting charging power to a wireless power receiver in a wireless power transmitter is provided. The control method includes receiving a Power Transmission Unit (PTU) searching signal for searching for a wireless power transmitter, from the wireless power receiver; obtaining information about an identifier of a signal in a communication scheme used by the wireless power receiver; and exchanging signals with the wireless power receiver based on the information about the identifier of the signal in the communication scheme used by the wireless power receiver.

Claims

1. A control method for transmitting charging power to a wireless power receiver in a wireless power transmitter, the control method comprising:

receiving an advertisement signal from the wireless power receiver, wherein the advertisement signal includes a handle value for a preset universally unique identifier (UUID);

obtaining information about a characteristic of the advertisement signal, wherein the handle value is assigned to the characteristic; and

transmitting a connection request signal to the wireless power receiver for forming a communication connection between the wireless power transmitter and the wireless power receiver, based on the information.

2. The control method of claim 1, wherein the handle value indicates at least one characteristic of the UUID.

3. The control method of claim 2, wherein transmitting the connection request signal comprises performing at least one of transmission of a read signal to the wireless power receiver, reception of a read response signal from the wireless power receiver, and transmission of a write signal to the wireless power receiver, based on the handle value for the at least one characteristic of the UUID.

4. The control method of claim 2, further comprising sequentially determining handle values of other characteristics of the UUID based on the handle value for the at least one characteristic of the UUID.

5. The control method of claim 1, further comprising:

forming a communication connection with the wireless power receiver.

17. The control method of claim 1, wherein the preset UUID includes a wireless power transfer service.

6. A control method for receiving charging power from a wireless power transmitter in a wireless power receiver, the control method comprising:

transmitting an advertisement signal to the wireless power transmitter, wherein the advertisement signal includes a handle value related to a preset universally unique identifier (UUID) for the wireless power transmitter obtaining information about a characteristic of the advertisement signal, and the handle value is assigned to the characteristic;

receiving a communication connection request signal from the wireless power transmitter; and

forming a communication connection between the wireless power transmitter and the wireless power receiver, based on the communication connection request signal.

7. The control method of claim 6, wherein the handle value indicates at least one characteristic of the UUID of the at least one packet.

8. The control method of claim 7, wherein receiving the communication connection request signal comprises performing at least one of reception of a read signal from the wireless power transmitter, transmission of a read response signal to the wireless power transmitter, and reception of a write signal from the wireless power transmitter, based on the handle value for the at least one characteristic of the UUID.

18. The control method of claim 6, wherein the preset UUID includes a wireless power transfer service.

9. A wireless power transmitter for transmitting charging power to a wireless power receiver, the wireless power transmitter comprising:

a communication unit; and

a controller configured to;

receive, using the communication unit, an advertisement signal from the wireless power receiver, wherein the advertisement signal includes a handle value for a preset universally unique identifier (UUID),

obtain information about a characteristic of the advertisement signal, wherein the handle value is assigned to the characteristic, and

transmit, using the communication unit, a connection request signal to the wireless power receiver for forming a communication connection between the wireless power transmitter and the wireless power receiver, based on the information.

10. The wireless power transmitter of claim 9, wherein the handle value indicates at least one characteristic of the UUID.

11. The wireless power transmitter of claim 10, wherein the controller is further configured to perform at least one of transmission of a read signal to the wireless power receiver, reception of a read response signal from the wireless power receiver, and transmission of a write signal to the wireless power receiver, based on the handle value for the at least one characteristic of the UUID.

12. The wireless power transmitter of claim 10, wherein the controller is further configured to sequentially determine handle values of other characteristics of the UUID based on the handle value for the at least one characteristic of the UUID and a pre-stored computation rule.

13. The wireless power transmitter of claim 9, wherein the controller is further configured to form a communication connection with the wireless power receiver.

19. The wireless power transmitter of claim 9, wherein the preset UUID includes a wireless power transfer service.

14. A wireless power receiver for receiving charging power from a wireless power transmitter, wireless power receiver comprising:

a communication unit; and

a controller configured to;

transmit, using the communication unit, an advertisement signal to the wireless power transmitter, wherein the advertisement signal includes a handle value related to a preset universally unique identifier (UUID) for the wireless power transmitter obtaining information about a characteristic of the advertisement signal, and the handle value is assigned to the characteristic,

receive, using the communication unit, a communication connection request signal from the wireless power transmitter, and

form a communication connection between the wireless power transmitter and the wireless power receiver, based on the communication connection request signal.

15. The wireless power receiver of claim 14, wherein the handle value indicates at least one characteristic of the UUID of the at least one packet.

16. The wireless power receiver of claim 15, wherein the controller is further configured to perform at least one of reception of a read signal from the wireless power transmitter, transmission of a read response signal to the wireless power transmitter, and reception of a write signal from the wireless power transmitter, based on the handle value for the at least one characteristic of the UUID.

20. The wireless power receiver of claim 14, wherein the preset UUID includes a wireless power transfer service.