Method for performing wireless charging control of an electronic device with aid of simple response indicating acknowledgement, and associated apparatus

• US 10,554,070 B2
• Filed: 04/14/2016
• Issued: 02/04/2020
• Est. Priority Date: 01/16/2014
• Status: Active Grant

• Current Assignee: MediaTek, Inc.
• Original Assignee: MediaTek, Inc.
• Inventors: Lee, Chi-Min, Satyamoorthy, Anand
• Primary Examiner(s): Whitmore, Stacy
• Application Number:
  US15/098,338
• Publication Number:
  US 20160233716A1
• Time in Patent Office: 1,391 Days
• Field of Search: 320108
• 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 7/00036 Charger exchanging data with battery
• 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
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: H02J 7/0045 concerning the insertion or the connection of the batteries
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals

Abstract

A method for performing wireless charging control of an electronic device with aid of simple response of a wireless charging device and an associated apparatus are provided, where the wireless charging device may be arranged to wirelessly charge the electronic device, and the method may include: receiving a plurality of packets from the electronic device, wherein each packet of the plurality of packets is utilized for carrying information of wireless charging reports of the electronic device, and comprises unacknowledged header information; and controlling the wireless charging device to generate at least one simple response corresponding to at least one packet of the plurality of packets, to acknowledge the at least one packet of the plurality of packets.

Claims

1. A method for performing wireless charging control of an electronic device by a wireless charging device arranged to wirelessly charge the electronic device, the method comprising the steps of:

receiving, by the wireless charging device, a plurality of packets from the electronic device, wherein the plurality of packets include wireless charging reports of the electronic device;

controlling the wireless charging device to transmit a plurality of responses to acknowledge the plurality of packets, the plurality of responses comprising a plurality of pulses in the time domain or the frequency domain; and

controlling the wireless charging device to perform wireless charging of the electronic device based on the wireless charging reports,

wherein the electronic device detects the plurality of responses as acknowledgement of the plurality of packets.

2. The method of claim 1, wherein the step of controlling the wireless charging device to transmit the plurality of responses to acknowledge the plurality of packets further comprises:

controlling the wireless charging device to transmit the plurality of responses without sending information from the wireless charging device to the electronic device through any packet, to acknowledge the plurality of packets.

3. The method of claim 1, wherein the wireless charging device does not send any packet to the electronic device to acknowledge the plurality of packets.

4. The method of claim 1, wherein the plurality of packets comprises at least one random phase-delay packet, wherein each random phase-delay packet of the at least one random phase-delay packet has a random phase-delay with respect to a time slot, and the at least one random phase-delay packet is utilized for carrying information of at least one wireless charging report of the electronic device.

5. The method of claim 1, wherein the plurality of pulses comprises a positive pulse.

6. The method of claim 5, wherein the plurality of pulses further comprises a negative pulse;

and the positive pulse and the negative pulse indicate different meanings, respectively.

7. The method of claim 6, wherein the positive pulse indicates that power polling corresponding to a packet of the plurality of packets is granted, and the negative pulse indicates that power polling corresponding to another packet of the plurality of packets is rejected.

8. The method of claim 1, wherein the plurality of pulses comprises a negative pulse.

9. The method of claim 1, wherein the plurality of pulses includes a single pulse to acknowledge at least one packet.

10. The method of claim 1, wherein controlling the wireless charging device to perform wireless charging of the electronic device based on the wireless charging reports comprises performing foreign object detection (FOD) based on the wireless charging reports and performing the wireless charging when the FOD indicates no foreign object is present.

11. An apparatus for performing wireless charging control of an electronic device by a wireless charging device arranged to wirelessly charge the electronic device, the apparatus comprising at least one portion of the wireless charging device, the apparatus comprising:

a transmitter, positioned within the wireless charging device, arranged for outputting a transmitter current; and

a control circuit, positioned within the wireless charging device and coupled to the transmitter, arranged for receiving a plurality of packets from the electronic device through a power output coil of the wireless charging device, wherein the plurality of packets carry wireless charging reports of the electronic device, wherein the control circuit is further arranged for controlling the wireless charging device to transmit, by using the transmitter, a plurality of responses, to acknowledge the plurality of packets, the plurality of responses comprising a plurality of pulses in the time domain or the frequency domain,

wherein the transmitter is arranged to output the transmitter current to the power output coil to perform wireless charging of the electronic device based on the wireless charging reports,

wherein the electronic device detects the plurality of responses as acknowledgement of the plurality of packets.

12. The apparatus of claim 11, wherein the control circuit controls the wireless charging device to transmit the plurality of responses without sending information from the wireless charging device to the electronic device through any packet, to acknowledge the plurality of packets.

13. The apparatus of claim 11, wherein the wireless charging device does not send any packet to the electronic device to acknowledge the plurality of packets.

14. The apparatus of claim 11, wherein the plurality of packets comprises at least one random phase-delay packet, wherein each random phase-delay packet of the at least one random phase-delay packet has a random phase-delay with respect to a time slot, and the at least one random phase-delay packet is utilized for carrying information of at least one wireless charging report of the electronic device.

15. The apparatus of claim 11, wherein the plurality of pulses comprises a positive pulse.

16. The apparatus of claim 15, wherein the plurality of pulses further comprises a negative pulse;

and the positive pulse and the negative pulse indicate different meanings, respectively.

17. The apparatus of claim 16, wherein the positive pulse indicates that power polling corresponding to a packet of the plurality of packets is granted, and the negative pulse indicates that power polling corresponding to another packet of the plurality of packets is rejected.

18. The apparatus of claim 11, wherein the plurality of pulses comprises a negative pulse.

19. The apparatus of claim 11, wherein the plurality of pulses includes a single pulse to acknowledge at least one packet.