METHOD AND SYSTEM FOR IN-BAND PASSWORD MANAGEMENT FOR INDUCTIVE WIRELESS CHARGING

• US 20170061142A1
• Filed: 08/31/2015
• Published: 03/02/2017
• Est. Priority Date: 08/31/2015
• Status: Active Grant

• Current Assignee: NXP B.V. (NXP Semiconductors NV)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: Niessen, Patrick
• Granted Patent: US 9,953,174 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 1/26 Power supply means, e.g. regulation thereof for memories G11C
• CPC Class Codes: G06F 21/604 Tools and structures for managing or administering access control systems
• CPC Class Codes: G06F 21/81 by operating on the power supply, e.g. enabling or disabling power-on, sleep or resume operations
• 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

Abstract

A method for authorizing a service is disclosed. In the embodiment, the method involves receiving a packet carried via a first power signal according to an inductive wireless power transfer communications protocol, the packet received at a power receiver within a mobile device, extracting a password from the received packet, storing the extracted password in memory within the mobile device, transmitting the stored password in a packet via a second power signal according to the inductive wireless transfer communications protocol to authorize a service.

Claims

1. A method for authorizing a service, the method comprising:

receiving a packet carried via a first power signal according to an inductive wireless power transfer communications protocol, the packet received at a power receiver within a mobile device;

extracting a password from the received packet;

storing the extracted password in memory within the mobile device; and

transmitting the stored password in a packet via a second power signal according to the inductive wireless transfer communications protocol to authorize a service.

2. The method of claim 1, wherein extracting is performed in response to:

receiving a packet carried via the first power signal; and

recognizing that a packet header of the received packet indicates the presence of a password in the packet.

3. The method of claim 1, wherein the service is the transmission of power for charging the mobile device.

4. The method of claim 1, wherein the service is charging the mobile device.

5. The method of claim 1, wherein the packet uses Qi protocol packet structure.

6. The method of claim 1, wherein the password corresponds to a service in a plurality of services.

7. The method of claim 1, wherein the method further comprises:

powering on the power receiver with power received from at least one of the first power signal and a third power signal; and

performing the extracting, storing, and transmitting using the received power;

wherein the third power signal is used to affect a power transfer.

8. The method of claim 7, wherein additional components within the mobile device are not powered on to perform the extracting, storing, and transmitting.

9. The method of claim 1, wherein the password is transmitted in response to a negotiation request from the power receiver.

10. A method for inductive wireless charging of a mobile device, the method comprising:

receiving a packet carried via a first power signal according to an inductive wireless power transfer communications protocol, the packet received at a power receiver within a mobile device;

extracting a password from the received packet;

storing the extracted password in memory within the mobile device;

transmitting the stored password in a packet via a second power signal according to the inductive wireless power transfer communications protocol; and

receiving a power transfer at the power receiver of the mobile device in response to transmitting the stored password.

11. The method of claim 10, wherein extracting is performed in response to:

receiving a packet carried via the first power signal; and

recognizing that a packet header of the received packet indicates the presence of a password in the packet.

12. The method of claim 10, wherein the packet uses Qi protocol packet structure.

13. The method of claim 10, wherein the password corresponds to a charging profile in a plurality of charging profiles.

14. The method of claim 10, wherein the method further comprises:

powering on the power receiver with power received from at least one of the first power signal and a third power signal; and

performing the extracting, storing, and transmitting using the received power;

wherein the third power signal is used to affect a power transfer.

15. The method of claim 14, wherein additional components within the mobile device are not powered on to perform the extracting, storing, and transmitting.

16. The method of claim 10, wherein the password is transmitted in response to a negotiation request from the power receiver.

17. A mobile device, the mobile device comprising:

a power receiver configured to;

receive a packet carried via a first power signal according to an inductive wireless power transfer communications protocol;

extract a password from the received packet;

store the extracted password in memory within the mobile device; and

transmit the stored password in a packet via a second power signal according to the inductive wireless power transfer communications protocol to authorize a service.

18. The mobile device of claim 17, wherein the mobile device is further configured to:

power on the power receiver with power received from at least one of the first power signal and a third power signal; and

perform the extracting, storing, and transmitting using the received power;

wherein the third power signal is used to affect a power transfer.

19. The mobile device of claim 18, wherein the password is stored in memory within the power receiver.

20. The mobile device of claim 19, wherein the mobile device further comprises a main processing unit, a main memory, and a user interface and wherein the mobile device is configured such that the main processing unit, the main memory, and the user interface are not powered on to perform the extracting, storing, and transmitting.