RFID Game Table Read Zones With Electromagnetic Field Restriction
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Solution Overview
Problem
Existing game table reading systems struggle to accurately read RFID tags in close proximity due to overlapping read areas, leading to misidentification of game tokens and inefficient management.
Innovation Solution
A game table reading system with multiple reading antennas, read-restriction antennas, and a management control device that separates and manages RFID tag information from each area, using shielding members to shape electromagnetic fields and update databases with user and token information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple reading antennas are installed in close proximity to cover different betting areas, then the coverage area is improved, but reading accuracy deteriorates due to overlapping electromagnetic fields causing misreading of RFID tags
Solution Approach 1:
The patent divides the game table into multiple distinct reading areas, each served by a dedicated reading antenna. This segmentation allows each antenna to operate independently within its designated zone, eliminating the overlapping field interference that would occur with fewer, broader-coverage antennas. The segmentation principle directly resolves the contradiction by maintaining both comprehensive coverage and high reading accuracy through spatial division.
Solution Approach 2:
The patent introduces read-restriction antennas as intermediary elements positioned between reading antennas to control and limit the spread of electromagnetic fields. These intermediary antennas act as mediators that shape the electromagnetic field boundaries, ensuring that each reading antenna's field remains confined to its designated reading area. This intermediary mechanism enables multiple antennas to operate in close proximity without causing reading accuracy degradation.
2Productivity
If reading areas are placed in close proximity to maximize table utilization, then space efficiency is improved, but reliability deteriorates due to difficulty in determining which area a game token belongs to
Solution Approach 1:
The patent segments the game table surface into multiple clearly defined reading areas, each with its own reading antenna. This segmentation creates distinct zones that can be placed in close proximity while maintaining reliable identification. Each area's boundaries are well-defined through the segmented structure, allowing the system to determine with high reliability which area contains a game token, thus resolving the contradiction between space efficiency and identification reliability.
Solution Approach 2:
The patent implements a feedback mechanism where the reading control device receives reading results from multiple reading antennas and uses this information to determine the correct reading area. The system analyzes which antenna detected the RFID tag and uses this feedback to accurately identify the area, even when areas are in close proximity. This feedback-based area determination maintains high reliability while allowing dense placement of reading areas for maximum space utilization.
3Speed
If multiple reading antennas operate simultaneously to read game tokens across the table, then reading speed is improved, but harmful factors increase due to electromagnetic interference between antennas
Solution Approach 1:
The patent segments the electromagnetic field space by assigning each reading antenna to a specific reading area. This spatial segmentation allows multiple antennas to operate simultaneously at high speed without their electromagnetic fields interfering with each other. The segmented field boundaries, maintained through proper positioning and potentially aided by read-restriction antennas, enable parallel operation while minimizing harmful electromagnetic interference between adjacent antennas.
Solution Approach 2:
The patent introduces read-restriction antennas as intermediary elements that actively manage and control the electromagnetic field boundaries between adjacent reading areas. These intermediary antennas prevent the electromagnetic fields of neighboring reading antennas from overlapping and interfering with each other, allowing simultaneous high-speed operation. The read-restriction antennas act as mediators that eliminate the harmful electromagnetic interference while preserving the speed benefits of multiple simultaneous readers.
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 accurate reading and management of game tokens even in closely packed areas, identifying users and tokens correctly, and preventing misuse by outputting warnings for unauthorized tokens.
Implementation Method 1
a plurality of reading antennas installed corresponding to each of the plurality of read areas for reading the RFID tags embedded in the game token placed in the corresponding read areas
Implementation Method 2
a read-restriction antenna configured to restrict the readings by the reading antenna so that the reading antennas do not read the RFID tag of the game token in the read areas other than the read area corresponding to the reading antenna
Data Source
AI summary
A game table reading system comprises: a game table having a plurality of read areas including a plurality of betting areas; a plurality of read antennas installed corresponding to each of the plurality of read areas for reading RFID tags embedded in game tokens; a read-restricted antenna that restricts reading by the read antennas so that the read antennas do not read the RFID tags of the game tokens other than the read area corresponding to the read antennas; a read control device that acquires the information stored in the RFID tag; a read restriction control device that controls the read restriction antenna; a database that stores information on RFID tags; and a management control device that updates the database based on the relationship between the information on the RFID tag read by the read antenna and the read area where the RFID tag was read.