Wireless Power Controller Encryption Verification
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Solution Overview
Problem
Devices that do not obtain WPC authentication for the Qi wireless power standard may be unreliable, potentially causing damage or unexpected issues during wireless power supply, as they lack guaranteed safety and reliability.
Innovation Solution
Implementing encryption communication protocols within the Qi standard to ensure that specific power supply modes are only enabled when information received through non-encryption and encryption channels matches, thereby prohibiting unsafe power supply modes between unauthenticated devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If encryption communication protocols are implemented to ensure safety, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by performing encryption protocol verification before enabling high-power wireless power supply modes. The controller checks whether the receiving device supports encryption communication in advance, and only permits high-power transmission if verification succeeds. This prevents unreliable devices from causing damage while maintaining safety without requiring continuous complex encryption operations during power transmission.
2Reliability
If encryption communication is required for high-power supply, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent applies self-service by having the receiving device automatically indicate its encryption support capability during the initial communication phase. The transmitting device's controller autonomously determines whether to enable high-power modes based on this indication, without requiring user intervention or manual configuration. This maintains ease of operation while ensuring reliability through automatic encryption verification.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances safety and reliability by ensuring that only authenticated devices with compatible encryption protocols can engage in high-power wireless power supply, preventing potential damage from unreliable device interactions.
Implementation Method 1
Wireless power supply based on the Qi standard uses electromagnetic induction between a transmitting coil and a receiving coil
Implementation Method 2
The receiving coil 32 receives the power signal S2 from the transmitting coil 22
Implementation Method 3
The control signal S3 is transmitted from a receiving coil 32 (secondary coil) to the transmitting coil 22 in a form of AM (Amplitude Modulation) modulation using backscatter modulation
Data Source
AI summary
There is provided a method for controlling a wireless power supply system including a wireless power transmitting device and a wireless power receiving device. The method includes: transmitting predetermined first information by non-encryption communication from a first device, which is one of the wireless power receiving device and the wireless power transmitting device, to a second device, which is the other of the wireless power receiving device and the wireless power transmitting device; transmitting the first information by encryption communication from the first device to the second device; and prohibiting, in the second device, a specific power supply mode when the first information received by the non-encryption communication does not match the first information received by the encryption communication.