Game Chip Booster Coil for Stacked RFID Reading
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Solution Overview
Problem
Conventional game chips stacked high on a gaming machine table are difficult to read due to electromagnetic wave scattering and attenuation, leading to unstable recognition and reading by IC-based reader/writers, especially when adjacent areas are bet targets and communication distances are set for longer ranges.
Innovation Solution
Incorporating an electromagnetic field resonant means, such as a booster coil, into the game chip design to enhance electromagnetic coupling and data transfer by resonating with the reader/writer's electromagnetic wave, allowing correct recognition and reading even when stacked, using an antenna coil connected to an IC device and a resonant circuit configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If game chips are stacked high to accommodate large bets, then the betting capacity is improved, but the electromagnetic wave signal becomes scattered and attenuated making it difficult to read upper chips
Solution Approach 1:
The patent applies electromagnetic resonance (analogous to mechanical vibration) by tuning the resonant frequency of the antenna coil to match the frequency of the electromagnetic waves from the reader/writer. This resonance amplifies the electromagnetic coupling effect, enabling reliable communication even when game chips are stacked at distances beyond the normal effective communication range.
Solution Approach 2:
The patent changes the operating parameters of the antenna coil by adjusting its resonant frequency to match the reader/writer's electromagnetic wave frequency. This parameter adjustment optimizes the electromagnetic coupling efficiency and extends the effective communication distance, allowing upper chips in a stack to be reliably read.
2Length of stationary object
If the effective communication distance of reader/writer is set long to read stacked chips, then upper chips can be read, but adjacent area chips can also be read causing interference
Solution Approach 1:
The patent enhances the electromagnetic coupling locally between the antenna coil and the reader/writer antenna by using resonance. This localized enhancement allows the system to achieve effective communication at extended distances without proportionally increasing the interference range, as the resonant coupling is highly directional and focused.
Solution Approach 2:
By utilizing electromagnetic resonance, the system creates a focused electromagnetic field coupling between the reader/writer and the game chip antenna. This resonant coupling concentrates the energy transfer in a specific direction and frequency, extending effective communication distance while minimizing interference with adjacent areas through frequency selectivity.
3Volume of moving object
If game chips are placed far from reader/writer to accommodate stacking, then betting capacity is improved, but electromagnetic wave signal becomes too weak for reliable communication
Solution Approach 1:
The antenna coil is designed to resonate at the same frequency as the reader/writer's electromagnetic waves. This resonance creates a strong electromagnetic coupling effect that amplifies the signal strength, enabling reliable communication even when game chips are positioned at greater distances from the reader/writer, thus supporting higher stacking capacity.
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 reliable and stable data reading from stacked game chips by expanding the electromagnetic coupling range, ensuring accurate communication and information retrieval from all chips, including those positioned higher in a stack.
Implementation Method 1
antenna means (for example, an antenna, an antenna coil, etc.), which is connected to the circuit means, makes electromagnetic coupling with the antenna of the read device, thereby to provide electric power to the circuit means
Implementation Method 2
enter a resonant state through an electromagnetic wave to transfer data to the read device by load modulation
Data Source
AI summary
The present invention relates to the technology of recognizing and reading each game chip although game chips are stacked. The present invention is a game chip storing data readable by a reader/writer having an antenna which emits an electromagnetic wave and available in a stack of game chips, and includes: an IC device for communicating data at a request from the reader/writer, an antenna coil which is connected to the IC device, gets into electromagnetic coupling with an antenna of the reader/writer, can provide electric power to the IC device, is configured to enter a resonant state through an electromagnetic wave, and can transfer data to the reader/writer by load modulation, and a booster coil for configuring a resonant circuit by electromagnetic coupling through an electromagnetic wave from the reader/writer.