RFID Game Token Structure for Stable Reading in Stacked Chips
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Solution Overview
Problem
Existing game tokens with built-in RFID tags face instability in reading and writing when stacked in various orientations due to varying distances between adjacent tags, and conventional solutions are costly and cumbersome.
Innovation Solution
A game token design with a recessed portion in the receiving part that accommodates a security part with an RFID tag positioned closer to the center, utilizing a laminated plastic structure and balanced weight distribution to stabilize RFID tag reading and ensure security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the security part is provided on one surface side of the game token, then the manufacturing process is simplified, but the distance between adjacent RFID tags becomes non-uniform when stacked, causing unstable reading and writing
Solution Approach 1:
The security part is positioned asymmetrically closer to the center of the game token rather than on the surface side. This asymmetric positioning ensures that when multiple tokens are stacked, the RFID tags maintain a more uniform distance from the reader, improving reading stability while keeping the manufacturing process relatively simple.
Solution Approach 2:
The position of the security part is adjusted in the thickness dimension (depth direction) of the game token. By moving the RFID tag closer to the center in the thickness direction, the patent achieves more uniform spacing between adjacent tags when stacked, resolving the reading stability issue without complicating the manufacturing process.
2Reliability
If the RFID tag is positioned closer to the center of the game token, then the reading stability of stacked tokens is improved, but the security part becomes more difficult to embed and manufacture
Solution Approach 1:
The security part is pre-assembled with the RFID tag positioned at the correct depth closer to the center of the token. This preliminary assembly allows for precise positioning of the RFID tag in the thickness direction before the final assembly step, making the embedding process easier while maintaining the improved reading stability.
3Reliability
If the security part is made with a laminated plastic structure, then the RFID tag is securely embedded and protection is improved, but the manufacturing complexity increases
Solution Approach 1:
The security part uses a laminated structure combining plastic layers with the RFID tag embedded between them. This composite structure provides secure embedding and protection of the RFID tag while maintaining relatively simple manufacturing processes through conventional lamination techniques.
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
Stabilizes RFID tag reading across multiple orientations while reducing manufacturing costs and enhancing security by positioning the RFID tag near the center, balancing weight, and preventing easy removal.
Implementation Method 1
the RFID reader communicates with an RFID tag in a non-contact manner by generating electromagnetic waves from an antenna
Implementation Method 2
a structure consisting of a plurality of laminated plastic layers, an RFID tag
Data Source
AI summary
A game token by which a plurality of RFID tags embedded in a plurality of the game tokens stacked each other can be read in a relatively stable manner is provided. A game token is provided with a security part and a receiving part that receives the security part. The security part has a shape with a diameter smaller than the diameter of the receiving part, a structure with a plurality of plastic layers laminated together, an RFID tag, and a visible print layer indicating a type or ID of the game token. The receiving part has a surface The surface of the receiving part has a recessed portion for receiving the security part, and the depth of the recessed portion is 25% or more of the thickness of the game token.