METHOD FOR PERFORMING WIRELESS CHARGING CONTROL OF AN ELECTRONIC DEVICE WITH AID OF FREQUENCY DETECTION, AND ASSOCIATED APPARATUS

• US 20150244200A1
• Filed: 11/27/2014
• Published: 08/27/2015
• Est. Priority Date: 02/26/2014
• Status: Abandoned Application

• Current Assignee: MediaTek, Inc.
• Original Assignee: MediaTek, Inc.
• Inventors: Juan, Kuan-Kai, Riehl, Patrick Stanley, Satyamoorthy, Anand, Yen, Yung-Chih, Yeh, Yuh-Long, Chen, Hung-Yen, Yang, Jui-Ching
• Application Number:
  US14/555,663
• Publication Number:
  US 20150244200A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0071 with a programmable schedule

Abstract

A method for performing wireless charging control of an electronic device and an associated apparatus are provided, where the method includes the steps of: performing at least one frequency detection operation according to at least one signal of the electronic device to generate at least one detection result; and determining a specific set of program codes within a plurality of sets of program codes to be an active set of program codes according to the aforementioned at least one detection result, and loading the specific set of program codes from a non-volatile (NV) memory of the electronic device, to control wireless charging operations of the electronic device. For example, the aforementioned at least one signal of the electronic device can be at least one induced signal of a power input coil of the electronic device or at least one derivative of the aforementioned at least one induced signal.

Claims

1. A method for performing wireless charging control of an electronic device, the method comprising the steps of:

performing at least one frequency detection operation according to at least one signal of the electronic device to generate at least one detection result; and

determining a specific set of program codes within a plurality of sets of program codes to be an active set of program codes according to the at least one detection result, and loading the specific set of program codes from a non-volatile (NV) memory of the electronic device, to control wireless charging operations of the electronic device.

2. The method of claim 1, wherein the at least one signal of the electronic device comprises at least one induced signal of a power input coil of the electronic device or at least one derivative of the at least one induced signal;

a rectifier of the electronic device is coupled to the power input coil through a matching circuit of the electronic device; and

the at least one signal of the electronic device is obtained from two terminals between the matching circuit and the rectifier.

3. The method of claim 2, wherein the two terminals between the matching circuit and the rectifier are two alternating current (AC) input terminals of the rectifier.

4. The method of claim 1, wherein the step of performing the at least one frequency detection operation according to the at least one signal of the electronic device to generate the at least one detection result further comprises:

performing a filtering operation on the at least one signal of the electronic device to obtain a filtered signal; and

performing the at least one frequency detection operation on the filtered signal to determine a frequency of the filtered signal.

5. The method of claim 4, wherein the frequency of the filtered signal indicates a specific frequency of wireless signals received by the power input coil.

6. The method of claim 1, wherein the step of determining the specific set of program codes within the plurality of sets of program codes to be the active set of program codes according to the at least one detection result further comprises:

automatically selecting the specific set of program codes from the plurality of sets of program codes as the active set of program codes according to a predetermined relationship between the specific set of program codes and the at least one detection result.

7. The method of claim 6, wherein the step of determining the specific set of program codes within the plurality of sets of program codes to be the active set of program codes according to the at least one detection result further comprises:

obtaining the predetermined relationship between the specific set of program codes and the at least one detection result from a look up table (LUT) within the electronic device.

8. The method of claim 1, further comprising:

selecting one set of program codes from the plurality of sets of program codes as the active set of program codes according to a user input.

9. The method of claim 8, wherein the step of selecting the specific set of program codes from the plurality of sets of program codes as the active set of program codes according to the user input further comprises:

when failure of determining the specific set of program codes within the plurality of sets of program codes to be the active set of program codes according to the at least one detection result is detected, selecting the one set of program codes from the plurality of sets of program codes as the active set of program codes according to the user input.

10. The method of claim 1, wherein the step of determining the specific set of program codes within the plurality of sets of program codes to be the active set of program codes according to the at least one detection result further comprises:

selecting at least one candidate set of program codes from the plurality of sets of program codes according to the at least one detection result;

controlling the electronic device to notify a user, the user of the electronic device, of the at least one candidate set of program codes, to allow the user to choose the active set of program codes; and

selecting the specific set of program codes from the at least one candidate set of program codes as the active set of program codes according to a user input.

11. The method of claim 1, wherein the at least one signal of the electronic device comprises at least one induced signal of a power input coil of the electronic device or at least one derivative of the at least one induced signal, or at least one timing signal of a specific stage within at least one stage coupled to the power input coil.

12. An apparatus for performing wireless charging control of an electronic device, the apparatus comprising at least one portion of the electronic device, the apparatus comprising:

a non-volatile (NV) memory, arranged for storing information for the electronic device;

a frequency detection module, coupled to a power input coil of the electronic device, arranged for performing at least one frequency detection operation according to at least one signal of the electronic device to generate at least one detection result; and

a controller, coupled to the NV memory and the frequency detection module, arranged for determining a specific set of program codes within a plurality of sets of program codes to be an active set of program codes according to the at least one detection result, and loading the specific set of program codes from the NV memory, to control wireless charging operations of the electronic device.

13. The apparatus of claim 12, wherein the at least one signal of the electronic device comprises at least one induced signal of a power input coil of the electronic device or at least one derivative of the at least one induced signal;

a rectifier of the electronic device is coupled to the power input coil through a matching circuit of the electronic device; and

the at least one signal of the electronic device is obtained from two terminals between the matching circuit and the rectifier.

14. The apparatus of claim 13, wherein the two terminals between the matching circuit and the rectifier are two alternating current (AC) input terminals of the rectifier.

15. The apparatus of claim 12, wherein the frequency detection module is arranged for performing a filtering operation on the at least one signal of the electronic device to obtain a filtered signal;

and the frequency detection module is arranged for performing the at least one frequency detection operation on the filtered signal to determine a frequency of the filtered signal.

16. The apparatus of claim 15, wherein the frequency of the filtered signal indicates a specific frequency of wireless signals received by the power input coil.

17. The apparatus of claim 12, wherein the controller is arranged for automatically selecting the specific set of program codes from the plurality of sets of program codes as the active set of program codes according to a predetermined relationship between the specific set of program codes and the at least one detection result.

18. The apparatus of claim 17, wherein the controller is arranged for obtaining the predetermined relationship between the specific set of program codes and the at least one detection result from a look up table (LUT) within the electronic device.

19. The apparatus of claim 12, wherein the controller is further arranged for selecting one set of program codes from the plurality of sets of program codes as the active set of program codes according to a user input.

20. The apparatus of claim 19, wherein when failure of determining the specific set of program codes within the plurality of sets of program codes to be the active set of program codes according to the at least one detection result is detected, the controller selects the one set of program codes from the plurality of sets of program codes as the active set of program codes according to the user input.

21. The apparatus of claim 12, wherein the controller is arranged for selecting at least one candidate set of program codes from the plurality of sets of program codes according to the at least one detection result;

the controller is arranged for controlling the electronic device to notify a user, the user of the electronic device, of the at least one candidate set of program codes, to allow the user to choose the active set of program codes; and

the controller is arranged for selecting the specific set of program codes from the at least one candidate set of program codes as the active set of program codes according to a user input.

22. The apparatus of claim 12, wherein the at least one signal of the electronic device comprises at least one induced signal of a power input coil of the electronic device or at least one derivative of the at least one induced signal, or at least one timing signal of a specific stage within at least one stage coupled to the power input coil.