Automatic Card Shuffler Detecting Marked Cards via Optical Analysis

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Solution Overview

Problem

Existing casino games are vulnerable to cheating methods involving marked playing cards, which provide an unfair advantage to cheats, and there is a need for technologies that can detect these markings to maintain game integrity.

Innovation Solution

An automatic playing card shuffler equipped with light spectrum emitters, spectrum filters, and cameras that capture and analyze images of card backs to reveal invisible markings, coupled with software to recognize patterns and alert casino personnel in real-time, along with card sorting and verification devices to ensure deck integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If automatic card shufflers are used to speed up games and randomize cards, then productivity and reliability are improved, but the system becomes vulnerable to marked cards that can deceive the randomization process

Engineering Contradiction:

Improvegame speedVSAvoidcard integrity

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system performs preliminary detection of card markings before the cards are shuffled and dealt. The light spectrum emitters and cameras scan each card to detect invisible markings, patterns, and anomalies before they can be used in gameplay, preventing cheated cards from entering the game pool

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors cards during shuffling and dealing operations. When marked cards are detected, the system provides real-time feedback by alerting casino personnel and can automatically adjust operations to prevent the use of marked cards, creating a closed-loop security system

Inventive Principle:

Principle #23Feedback

2Measurement precision

If light spectrum emitters and cameras are added to detect invisible markings, then measurement precision for detecting marked cards is improved, but device complexity increases

Engineering Contradiction:

Improvemarking detection accuracyVSAvoidsystem structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The card shuffling system is enhanced with multi-functional components that serve both original and detection purposes. The same optical path used for card visualization during shuffling is also used for marking detection, and the camera system captures both shuffle mechanics and card surface characteristics, reducing the need for entirely separate detection hardware

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

Light spectrum emitters act as intermediaries that reveal invisible markings by causing them to fluoresce or reflect specific wavelengths. The light interacts with the card markings and makes them visible to the camera system, serving as a mediator between the invisible markings and the detection apparatus

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If real-time detection and alerting systems are implemented, then reliability of game integrity is improved, but use of energy and device complexity increase

Engineering Contradiction:

Improvegame integrityVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The detection system operates periodically rather than continuously, scanning cards at key moments during the shuffling and dealing process. This intermittent operation reduces energy consumption while maintaining effective monitoring of card integrity throughout gameplay

Inventive Principle:

Principle #19Periodic action

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 effectively detects and alerts casino staff to marked cards, preventing cheating by ensuring random card shuffles and maintaining the integrity of casino games, allowing for real-time monitoring and potential identification of individuals responsible for card manipulation.

Implementation Method 1

one or more light spectrum emitters or variable light spectrum illuminators transmit light at frequencies/wavelengths which is reflected off card backs through one or more spectrum filters causing invisible markings to become visible

Methodology Applied

Scientific EffectLight reflection: Reflection

Implementation Method 2

one or more light spectrum emitters or variable light spectrum illuminators transmit light at frequencies/wavelengths which is reflected off card backs through one or more spectrum filters

Methodology Applied

Scientific EffectOptical filtering: Filter (optical)

Data Source

PatentUS10421007B2Automatic playing card shuffler and other card-handling devices configured to detect marked cards and method of using the same

Publication Date: 2019.09.24 SHARK TRAP GAMING & SECURITY SYSTEMS LLC

AI summary

An automatic playing card shuffler incorporating means for detecting marked cards. One or more light spectrum emitters or variable light spectrum illuminators transmit light at frequencies/wavelengths which is reflected off card backs through one or more spectrum filters causing invisible markings to become visible. A camera may capture images of the now visible markings. A camera and software collaborate to capture images and analyze the same for markings on the card backs such as smudges, nicks and scuffs and edge demarcations. The automatic playing card shufflers are configured to not only detect marked cards but to detect patterns relative to the card markings. The automatic card shufflers are communicatively linked with a casino management system and/or security system such that casino personnel may be alerted in real time to the discovery of marked cards.