Gaming Machine Antenna Magnetic Field Cancellation
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Solution Overview
Problem
Conventional gaming machines face difficulties in accurately detecting gaming media on placement areas due to magnetic field diffusion, leading to incorrect identification and failure to read information from multiple gaming media accumulated on cross points.
Innovation Solution
The gaming machine employs a control unit to drive detecting units in a manner that generates a polarized radio wave with a loop shape, ensuring accurate detection by opposing the magnetic field direction of one detecting unit with that of adjacent units, thereby preventing unnecessary diffusion and allowing for precise identification of gaming media on placement areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the magnitude of magnetic field generated by detecting units is increased to improve detection capability, then the gaming machine can detect gaming media more effectively, but magnetic field lines diffuse and return in downward direction causing incorrect detection of gaming media on adjacent cross points
Solution Approach 1:
The patent applies preliminary anti-action by driving adjacent detecting units with opposite polarities before detection occurs. This creates opposing magnetic fields that cancel each other's diffusion effects, preventing the harmful magnetic field lines from reaching adjacent cross points and causing false detections. The opposing fields are established in advance to counteract the potential interference.
Solution Approach 2:
The patent implements local quality by assigning different polarities to different detecting units based on their spatial locations. Each detecting unit's polarity is optimized for its specific position, creating localized magnetic field patterns that concentrate flux through the intended cross point while minimizing diffusion to adjacent areas. This spatially varying polarity configuration ensures each detection zone operates independently.
2Reliability
If the magnitude of magnetic field generated is reduced to avoid incorrect detection, then false detection of gaming media on adjacent cross points is prevented, but the gaming machine cannot detect placement conditions of accumulated gaming media on the cross point
Solution Approach 1:
The patent uses preliminary anti-action to prevent magnetic field diffusion to adjacent cross points while maintaining sufficient field strength for detection. By pre-configuring opposing polarities in adjacent detecting units, the system creates magnetic field boundaries that contain the flux within the intended detection zone, allowing strong fields without cross-interference.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the polarity configuration of detecting units based on detection requirements. The system can switch between different polarity patterns to optimize for either strong detection capability or isolation from adjacent zones, depending on the operational context and accumulation patterns of gaming media.
3Extent of automation
If X-array antennas and Y-array antennas emit radio waves to generate magnetic field for reading IC tag information, then the system can identify gaming media placement conditions, but magnetic field diffusion causes the system to incorrectly determine placement location
Solution Approach 1:
The patent implements local quality by assigning specific polarity patterns to X-array and Y-array antennas based on their spatial positions. Each antenna's magnetic field orientation is optimized for its local detection zone, creating concentrated flux patterns that pass through intended cross points while minimizing diffusion to adjacent areas. This enables automatic detection without cross-point interference.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the emission parameters of the antennas, including polarity, frequency, and power levels. The system can switch between different emission patterns to optimize detection for specific placement scenarios, maintaining high accuracy in automatic detection while preventing false readings from adjacent cross points.
Data Source
AI summary
A gaming machine includes a gaming table, antennas and a control unit. The antennas are arranged to placement areas formed on the gaming table. The antennas are employed to determine whether or not at least one gaming medium is placed on any of the placement areas. The control unit drives at least two antennas simultaneously so that a direction of magnetic field generated by one antenna is opposed to one generated by at least one other antenna adjacent to the one antenna.