Wireless Power Control for High-Speed Proximity Communication
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Solution Overview
Problem
High-speed proximity communication devices, such as those using TransferJet, face challenges in powering small form factor IC cards due to high power demands, leading to inefficient wireless electrical power transmission when excess power is supplied, resulting in unnecessary electrical power consumption.
Innovation Solution
A communication system with a master and slave device configuration, where the slave device monitors and controls wireless electrical power transmission based on configuration information to ensure only the necessary power is supplied for high-speed proximity communication, using a monitoring mechanism to stop transmission when excess power is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If wireless electrical power transmission is performed at high power to support high-speed proximity communication, then communication speed is improved, but electrical power consumption increases unnecessarily
Solution Approach 1:
The slave device measures the actual power consumption during high-speed communication and feeds back this information to the master device. The master device uses this feedback to dynamically adjust the wireless power transmission level, ensuring power is supplied only at the necessary amount rather than continuously at high power, thus reducing energy waste while maintaining communication speed
Solution Approach 2:
The system transitions from static high-power wireless electrical power transmission to dynamic power adjustment. The master device continuously adapts the power transmission level based on real-time power consumption measurements from the slave device, optimizing the balance between communication speed and energy consumption
2Power
If a battery is mounted in the IC card to support high-speed communication, then power supply capability is improved, but device size increases
Solution Approach 1:
The patent replaces the mechanical/battery-based power supply system with a wireless electrical power transmission system. Instead of mounting a battery in the IC card, the master device wirelessly transmits electrical power to the slave device during high-speed communication, eliminating the need for internal power storage while maintaining power supply capability
Solution Approach 2:
The master device is designed to perform multiple functions: it can communicate with the slave device at both low speed and high speed, and it can also provide wireless electrical power transmission. This multi-functionality eliminates the need for the slave device to have its own power source, reducing its size while maintaining high-speed communication capability
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 effectively suppresses unnecessary electrical power consumption by ensuring only the required power is transmitted for high-speed proximity communication, enhancing the efficiency and convenience of small form factor IC cards.
Implementation Method 1
an electrical power transmission means for causing the slave communication device to transmit electrical power for performing the second communication using wireless electrical power transmission
Data Source
AI summary
A communication device including: a first slave communication section performing first communication which is proximity communication at a first communication speed; a second slave communication section performing a second communication which is proximity communication at a second communication speed faster than the first communication speed; and an electrical power reception section receiving electrical power to perform the second communication transmitted using wireless electrical power transmission from a master communication device, wherein the first slave communication section transmits configuration information including a maximum electrical power consumption consumed in the second communication to the master communication device using the first communication, the electrical power reception section receives electrical power which begins being transmitted from the master communication device after the first communication, and the second slave communication section begins operating using electrical power received by the electrical power reception section and begins the second communication with the master communication device.