Wireless Input Device Power Supply via RF Induction
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Solution Overview
Problem
Conventional wireless input devices require an external battery for power, leading to increased size, production costs, and potential for electrical or fluid leakage, which complicates maintenance and energy consumption.
Innovation Solution
A wireless input device that generates operation power from a received radio frequency signal, eliminating the need for an external battery by using a wireless signal receiver, control chip, and transmitter to detect input operations and transmit information to an external electronic apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a battery is assembled inside the wireless input device, then the device can operate continuously, but the device size increases and production cost increases
Solution Approach 1:
The patent extracts the power supply function from the physical battery and relocates it to the external electronic apparatus. The wireless input device no longer contains a battery, instead receiving power wirelessly through electromagnetic coupling with the external apparatus that generates the magnetic field. This removes the volume constraint while maintaining continuous operation capability.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary carrier of energy between the external electronic apparatus and the wireless input device. The external apparatus generates a magnetic field that penetrates through space to induce current in the input device, enabling power transfer without direct electrical contact or physical battery insertion.
2Reliability
If a standby battery is arranged in the wireless input device, then the device can maintain steady operation, but the device size increases and production cost increases
Solution Approach 1:
The standby battery function is extracted from the input device and relocated to the external electronic apparatus. The external apparatus maintains a sustained magnetic field that ensures continuous power availability, eliminating the need for a standby battery in the input device while maintaining operational reliability.
Solution Approach 2:
The external electronic apparatus performs preliminary action by continuously generating and maintaining a magnetic field in advance, ensuring that power is always available when needed. This pre-established energy field provides the same reliability function as a standby battery without requiring additional components in the input device.
3Adaptability or versatility
If a battery is arranged in the wireless input device, then the device can function as a wireless input device, but the production cost increases
Solution Approach 1:
The battery component is extracted from the input device entirely, eliminating the need for battery assembly, safety certifications, and disposal infrastructure. The wireless functionality is achieved through a simpler electromagnetic coupling mechanism between the external apparatus and input device, reducing manufacturing complexity and cost.
4Power
If a battery is arranged in the wireless input device, then the device can supply power, but electrical leakage may occur causing power waste
Solution Approach 1:
The magnetic field serves as an intermediary that enables efficient wireless power transfer without electrical contact. This eliminates leakage paths through battery terminals, connectors, and internal wiring, while the field-based energy transfer can be precisely controlled and deactivated when not in use, reducing energy waste.
5Power
If a battery is arranged in the wireless input device, then the device can supply power, but battery fluid leakage may occur damaging the device
Solution Approach 1:
The battery and its potential fluid leakage hazards are completely extracted from the wireless input device. Power is supplied through wireless electromagnetic coupling, eliminating all risks associated with battery fluid leakage, corrosion, and chemical damage to the device components.
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
Enables self-powered operation without an external battery, reducing device size and energy consumption while preventing power-related issues, thus enhancing reliability and maintenance simplicity.
Implementation Method 1
The wireless signal receiver receives a radio frequency signal by an external electronic apparatus. The wireless input device generates operation power according to the radio frequency signal.
Data Source
AI summary
An electronic apparatus, a wireless input device and a control method thereof are provided. The wireless input device includes a wireless signal receiver, a control chip, and a wireless signal transmitter. The wireless signal receiver receives a radio frequency signal. The control chip is activated according to the radio frequency signal and generates operation power according to the radio frequency signal. The control chip generates input information by detecting an input operation on an input interface based on the operation power. The wireless signal transmitter transmits the input information to an external electronic apparatus based on the operation power.