Wireless Power Receiver Detecting Memory Card Interference
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Solution Overview
Problem
In wireless power supply systems, the presence of communication devices like memory cards can interfere with the magnetic field, causing the power supply apparatus to fail in appropriately controlling wireless power supply to electronic devices.
Innovation Solution
An electronic device with a power receiving unit, a first communication unit, and a connection unit that determines if a connected communication device can receive power and notifies the power supply apparatus if it cannot, allowing the device to control the power supply unit to limit or stop power transmission to prevent interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless communication is performed between power supply apparatus and electronic device, then power supply control is achieved, but communication devices like memory cards may transmit responses not associated with wireless power supply causing inappropriate control
Solution Approach 1:
The electronic device monitors the communication device's capability to receive wireless power supply and provides feedback to the power supply apparatus. The control unit determines whether the communication device can receive predetermined power and transmits notification data to the power supply apparatus, enabling it to adjust power supply control accordingly and prevent inappropriate control caused by incompatible devices.
Solution Approach 2:
The electronic device acts as an intermediary between the power supply apparatus and the communication device. It detects the presence and capability of communication devices, then translates this information into appropriate control signals for the power supply apparatus, mediating the interaction to ensure reliable power supply control while maintaining compatibility with various communication devices.
2Productivity
If power supply apparatus performs wireless power supply, then electronic device charges battery, but magnetic field generated in antenna may affect memory card causing inappropriate power supply
Solution Approach 1:
The electronic device performs preliminary detection of communication devices before wireless power supply begins. By determining in advance whether a communication device is present and capable of receiving power, the system can prepare appropriate control measures, preventing magnetic field interference issues before they occur and ensuring safe power supply operation.
Solution Approach 2:
The system takes preliminary anti-action by notifying the power supply apparatus of incompatible communication devices before power supply starts. This allows the power supply apparatus to adjust its magnetic field generation or prevent power supply altogether, counteracting potential harmful effects before they can interfere with the memory card or cause inappropriate power supply.
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
Ensures proper wireless power supply to the electronic device by identifying and addressing the presence of non-compatible communication devices, preventing interference and ensuring safe operation.
Implementation Method 1
a power receiving unit that wirelessly receives power from a power supply apparatus
Implementation Method 2
a magnetic field generated in an antenna of the power supply apparatus
Data Source
AI summary
An electronic device includes a power receiving unit that wirelessly receives power from a power supply apparatus; a first communication unit that performs wireless communication; a connection unit that connects a communication device including a second communication unit that performs wireless communication; and a control unit that (a) determines whether the communication device is capable of receiving predetermined power if the communication device is connected with the connection unit, and (b) controls the first communication unit to transmit data for notifying the power supply apparatus about a presence of a device which is not capable of using wireless power supply if the communication device is not capable of receiving the predetermined power.