Method of protecting power receiver and related wireless charging device

• US 9,904,812 B2
• Filed: 10/27/2016
• Issued: 02/27/2018
• Est. Priority Date: 02/22/2013
• Status: Active Grant

• Current Assignee: HTC Corporation
• Original Assignee: HTC Corporation
• Inventors: Chu, Feng-Seng
• Primary Examiner(s): ABEDIN, SHANTO
• Application Number:
  US15/335,437
• Publication Number:
  US 20170046541A1
• Time in Patent Office: 488 Days
• Field of Search: 726 34- 36
• 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: G06F 21/88 Detecting or preventing theft or loss
• CPC Class Codes: G06Q 2220/12 Usage or charge determination
• CPC Class Codes: G07F 15/006 dispensed for the electrical charging of other devices than vehicles
• CPC Class Codes: G07F 15/10 with alarm or warning devices, e.g. indicating the interrupting of the supply
• 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 50/90 involving detection or optimisation of position, e.g. alignment
• 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

A method for a power receiver for protecting a power receiver from being taken without permission while charged wirelessly includes receiving wireless power from a power transmitter and performing wireless charging in a security mode by the power receiver; detecting whether the wireless charging is interrupted without receiving a security code for authorization; and starting a protection function if the power receiver detects that the wireless charging is interrupted without receiving the security code for authorization.

Claims

1. A method for a power receiver for protecting the power receiver from being taken without permission while charged wirelessly, the method comprising:

constantly receiving wireless power and a feedback from a power transmitter and performing wireless charging in a security mode by the power receiver, wherein the feedback is included in a control error packet (CEP) for sending to the power transmitter during wireless charging, and the feedback is sent periodically or non-periodically;

detecting whether the wireless charging is interrupted without receiving a security code for authorization;

sending an unauthorized interruption notification signal to the power transmitter after detecting that the wireless charging is interrupted without receiving the security code for authorization; and

starting a protection function if the power receiver detects that the wireless charging is interrupted without receiving the security code for authorization.

2. The method of claim 1, wherein the protection function comprises at least one of releasing a warning signal to notify an owner of a power receiver theft, launching a function for reporting a location of the power receiver, and sending a message to a specific person or a place for help.

3. The method of claim 1, wherein the power transmitter releases a warning signal to notify an owner of a power receiver theft or sends a message to a specific person or a place for help after receiving the unauthorized interruption notification signal.

4. A power receiver, comprising:

a processing means, for executing a program; and

a storage unit, coupled to the processing means, for storing the program which instructs the processing means to perform the following steps, for protecting the power receiver from being taken without permission while charged wirelessly;

constantly receiving wireless power and a feedback from a power transmitter and performing wireless charging in a security mode, wherein the feedback is included in a control error packet (CEP) for sending to the power transmitter during wireless charging, and the feedback is sent periodically or non-periodically;

detecting whether the wireless charging is interrupted without receiving a security code for authorization;

sending an unauthorized interruption notification signal to the power transmitter after detecting that the wireless charging is interrupted without receiving the security code for authorization; and

starting a protection function if the wireless charging is detected to be interrupted without receiving the security code for authorization.

5. The power receiver of claim 4, wherein the protection function comprises at least one of releasing a warning signal to notify an owner of a power receiver theft, launching a function for reporting a location of the power receiver, and sending a message to a specific person or a place for help.

6. The power receiver of claim 4, wherein the power transmitter releases a warning signal to notify an owner of a power receiver theft or sends a message to a specific person or a place for help after receiving the unauthorized interruption notification signal.