METHOD AND APPARATUS FOR AUTHENTICATION IN WIRELESS POWER TRANSMISSION SYSTEM

• US 20150022018A1
• Filed: 07/22/2014
• Published: 01/22/2015
• Est. Priority Date: 07/22/2013
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Nam Yun, Kwon, Sang Wook, Kim, Dong Zo, Kim, Bong Chul, Park, Yun Kwon, Ahn, Chi Hyung, Lee, Byoung Hee
• Granted Patent: US 10,211,683 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• 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 7/00045 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

Abstract

An authentication of a power transmitting unit (PTU) includes determining whether an access right to an external device is present in a power receiving unit (PRU) based on identification information of the PRU, and network-connecting the PRU to the external device in response to a result of the determining being that the access right is present in the PRU.

Claims

1. An authentication method of a power transmitting unit (PTU), the authentication method comprising:

determining whether an access right to an external device is present in a power receiving unit (PRU) based on identification information of the PRU; and

network-connecting the PRU and the external device in response to a result of the determining being that the access right is present in the PRU.

2. The authentication method of claim 1, further comprising granting the access right to the PRU.

3. The authentication method of claim 2, wherein the granting of the access right to the PTU comprises transmitting, to the PRU, a setting identifier to which the access right is granted.

4. The authentication method of claim 3, wherein the transmitting of the setting identifier to the PRU comprises:

obtaining a unique identifier of the PRU; and

generating the setting identifier based on the unique identifier.

5. The authentication method of claim 3, wherein the transmitting of the setting identifier comprises:

receiving a request for granting the access right from the PRU; and

transmitting the setting identifier to the PRU in response to the request.

6. The authentication method of claim 2, wherein the granting of the access right to the PRU comprises:

obtaining a unique identifier of the PRU; and

granting the access right to the unique identifier.

7. The authentication method of claim 2, wherein the granting of the access right to the PRU comprises:

receiving a setting identifier from the PRU; and

granting the access right to the setting identifier in response to the receiving of the setting identifier.

8. The authentication method of claim 2, wherein the granting of the access right to the PRU comprises:

receiving, from the external device, a request for granting the access right to the PRU; and

granting the access right to the PRU in response to the request.

9. The authentication method of claim 2, wherein the granting of the access right to the PRU comprises receiving, from the external device, a setting identifier to which the access right is granted.

10. The authentication method of claim 1, wherein the determining of whether the access right is present in the PRU comprises:

receiving the identification information from the PRU a predetermined number of times; and

blocking further reception of the identification information from the PRU in response to a result of the determining being that the access right is not present in the PRU based on the identification information received the predetermined number of times.

11. The authentication method of claim 1, wherein the identification information comprises the access right granted by the external device.

12. The authentication method of claim 1, further comprising network-connecting the PTU to the PRU.

13. The authentication method of claim 12, wherein the network-connecting of the PTU to the PRU comprises:

transmitting a beacon signal to the PRU;

receiving an advertisement signal from the PRU; and

transmitting a connection request to the PRU.

14. The authentication method of claim 13, wherein the transmitting of the beacon signal to the PRU comprises transmitting a wake-up power to the PRU.

15. The authentication method of claim 1, wherein the determining of whether the access right is present in the PRU comprises:

receiving either one or both of a unique identifier and a setting identifier from the PRU; and

determining whether the access right in is present in the either one or both of the unique identifier and the setting identifier.

16. The authentication method of claim 1, wherein the PRU is configured to communicate directly with the external device while the PRU is network-connected to the external device.

17. The authentication method of claim 1, further comprising feeding back, in a visual, audible, or tactile manner, information associated with either one or both of the identification information and the access right of the PRU.

18. A non-transitory computer-readable storage medium storing a program for controlling a computer to perform the authentication method of claim 1.

19. An authentication method of a power receiving unit (PRU), the authentication method comprising:

determining whether an access right to an external device is present in a power transmitting unit (PTU) based on identification information of the PTU; and

network-connecting the PTU and the external device in response to a result of the determining being that the access right is present in the PTU.

20. A power transmitting unit (PTU) comprising:

a resonator configured to transmit wireless power;

a power supply circuit configured to supply power to the resonator; and

a control and communication unit configured to;

control the power supply circuit;

determine whether a power receiving unit (PRU) is pre-authorized to access an external device based on identification information received from the PRU; and

network-connect the PRU and the external device in response to a result of the determining being that the PRU is pre-authorized to access the external device.

21. The PTU of claim 20, wherein the identification information reflects whether an access right to the external device is present in the PRU.

22. The PTU of claim 20, wherein the control and communication unit is further configured to:

compare authentication information included in the PTU to the identification information of the PRU;

in response to a result of the comparing being that the authentication information included in the PTU corresponds to the identification information of the PRU, determine that the PRU is pre-authorized to access the external device; and

in response to a result of the comparing being that the authentication information included in the PTU does not correspond to the identification information of the PRU, determine that the PRU is not pre-authorized to access the external device.

23. A power receiving unit (PRU) comprising:

a resonator configured to receive wireless power;

a power converting circuit configured to convert the wireless power received by the resonator and supply the converted power to a load; and

a control and communication unit configured to;

control the power converting circuit;

determine whether a power transmitting unit (PTU) is pre-authorized to access an external device based on identification information received from the PTU; and

network-connect the PTU and the external device in response to a result of the determining being that the PTU is pre-authorized to access the external device.

24. The PRU of claim 23, wherein the identification information reflects whether an access right to the external device is present in the PTU.

25. The PRU of claim 23, wherein the control and communication unit is further configured to:

compare authentication information included in the PRU to the identification information of the PTU;

in response to a result of the comparing being that the authentication information included in the PRU corresponds to the identification information of the PTU, determine that the PTU is pre-authorized to access the external device; and

in response to a result of the comparing being that the authentication information included in the PRU does not correspond to the identification information of the PTU, determine that the PTU is not pre-authorized to access the external device.