Card Shuffler Sensor System for Edge Sorting and Cheat Detection

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Solution Overview

Problem

Automatic card shufflers fail to effectively detect asymmetrical card back variations exploited by advantage players and cheaters, as these variations are difficult to discern and can be used to gain an edge in games like Baccarat.

Innovation Solution

Modified playing cards with asymmetrical markings that can be detected by a sensor integrated into the automatic card shuffler, allowing the system to monitor card orientation and identify unusual patterns indicative of advantage play or cheating.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional automatic shufflers use rollers, elevators and bins to separate and randomly reorganize cards, then shuffling speed and automation are improved, but the system cannot detect card orientation or asymmetrical variations exploited by advantage players

Engineering Contradiction:
Improveshuffling speedVSAvoidcard orientation detection
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

A sensor acts as an intermediary between the card and the shuffler system, detecting asymmetrical variations and orientation without disrupting the high-speed shuffling process. The sensor captures card characteristics as cards pass through the shuffler, enabling cheat detection while maintaining productivity.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces manual inspection of card orientation with an automated sensor-based detection system. This substitution allows the shuffler to monitor card asymmetries and orientations automatically, eliminating the need for human intervention while improving detection precision.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Manufacturing precision

If card manufacturers improve manufacturing tolerances to reduce asymmetrical variations, then card symmetry is improved, but skilled players can still discern differences as small as 1/200th of an inch

Engineering Contradiction:
Improvecard back symmetryVSAvoidasymmetry detection by players
Core Design Contradiction:
Manufacturing precisionVSDifficulty of detecting and measuring

Solution Approach 1:

The sensor creates a digital copy or representation of the card's asymmetrical features, allowing the system to analyze and detect variations that are imperceptible to human players. This copying mechanism enables precise measurement of card characteristics without requiring visible or tactile differences.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent changes the parameter of detection from human visual/tactile perception to sensor-based measurement, which can detect variations at a much finer scale. This parameter change allows the system to identify asymmetries that remain undetectable to skilled players even with improved manufacturing.

Inventive Principle:
Principle #35Parameter changes

3Ease of manufacture

If card manufacturers create card backs that conceal or obfuscate asymmetries, then visual detection of asymmetries is improved, but skilled players can still identify and exploit the asymmetries through edge sorting

Engineering Contradiction:
Improvecard back designVSAvoidedge sorting exploitation
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The sensor provides feedback to the shuffler system about detected card orientations and asymmetries. This feedback loop enables the system to identify when cards are being deliberately oriented for edge sorting, allowing for real-time detection and response to advantage play attempts.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The sensor serves as an intermediary that detects the true orientation and asymmetry of cards regardless of their visual appearance. Even when card backs are designed to conceal asymmetries, the sensor can detect the underlying physical variations that players exploit through edge sorting.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Measurement precision

If the shuffler monitors card orientation using sensors, then detection of advantage players is improved, but device complexity increases

Engineering Contradiction:
Improvecard orientation monitoringVSAvoidsensor integration
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The sensor system is designed to perform multiple functions: detecting card orientation, identifying asymmetrical variations, and flagging potential advantage play. This multi-functionality reduces the need for separate detection systems, thereby limiting the increase in device complexity while improving measurement precision.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

The system can immediately detect exploitable card orientations, enabling the identification of edge sorters or cheaters, thereby preventing unfair advantages and ensuring fair gameplay.

Implementation Method 1

asymmetrical markings on each card face for identifying playing card orientation. The asymmetrical markings are discernable by a sensor or reader device associated with an automatic card shuffler

Methodology Applied
Scientific EffectOptical detection: Reflection

Data Source

PatentUS11071904B2Automatic card shuffler and modified playing card system configured in combination to detect advantage players and cheats
Publication Date: 2021.07.27 SHARK TRAP GAMING & SECURITY SYSTEMS LLC
  • US11071904B2 patent drawing
  • US11071904B2 patent drawing
  • US11071904B2 patent drawing

AI summary

An automatic playing card shuffler system including an automatic playing card shuffler and deck of modified playing cards. The modifications relate to asymmetrical information on each card face, back and/or side for identifying playing card orientation. The asymmetrical information is discernable by one or more image-capturing and/or sensors associated with the automatic playing card shuffler. Accordingly, the orientation of the playing cards may be monitored by the automatic playing card shuffler. The orientation data can be analyzed by a processor of the automatic playing card shuffler to determine unusual orientation patterns indicative of advantage play or cheats. Another version utilizes two distinct marks to identify important cards and less important cards.