Optical Card Counting in Casino Shooters

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Solution Overview

Problem

Existing card shooter apparatuses cannot accurately determine if a stack of cards completes a predetermined number, such as 416 cards in eight decks, while the cards are stored in a stacking manner, and are vulnerable to fraudulent activities due to remote reading vulnerabilities.

Innovation Solution

A card shooter apparatus equipped with a card housing unit, an optical sensor that receives reflected light from the end surfaces of the cards, and a number counting unit that determines the card count, along with a fraudulent card detection system using striped patterns on card sides, allowing for accurate counting and fraud detection within the stacked configuration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If cards are separated for each card by a roller to measure the number of cards and inspect the cards, then each card can be individually inspected, but the cards cannot be inspected in a state where they are stored in the card shooter apparatus in a stacking manner

Engineering Contradiction:
Improvecard inspection accuracyVSAvoidinspection operation convenience
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent replaces the mechanical roller separation system with an optical sensing system. Optical sensors detect the presence and characteristics of cards through non-contact means, allowing inspection of stacked cards without mechanical separation. This substitution enables the system to maintain measurement precision while dramatically improving ease of operation, as cards can now be inspected in their stored stacking configuration within the card shooter apparatus.

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

Solution Approach 2:

The patent introduces optical sensors as an intermediary between the stacked cards and the inspection system. These sensors act as mediators that can detect card characteristics (such as UV codes, IC information, or physical properties) through the card stack without requiring physical separation. This intermediary approach allows the system to bridge the gap between maintaining cards in a stacked storage state and performing accurate inspection, resolving the contradiction between measurement precision and operational convenience.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If ICs with antennas are embedded in cards for remote reading, then cards can be inspected from a remote location, but the information of the card can be stolen by advanced hacking technology and fraudulently used

Engineering Contradiction:
Improveremote inspection capabilityVSAvoidfraud prevention reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent employs disposable, single-use optical inspection methods rather than reusable electronic ICs with antennas. Each card's information is read optically and cannot be remotely cloned or hacked. The inspection relies on physical properties (UV-reactive materials, optical patterns, or one-time readable markers) that cannot be digitally stolen or replicated, thereby maintaining reliability for fraud prevention while still enabling convenient inspection.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent converts the potential vulnerability of electronic ICs (which can be hacked) into a benefit by using optical detection methods that are inherently more secure. The physical nature of optical inspection—requiring direct line-of-sight detection of physical card properties—creates a security advantage. Any attempt at fraud would require physical access to the card itself, not just digital access, thereby converting the limitation of non-electronic detection into a security benefit that prevents remote hacking while maintaining inspection capability.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

3Productivity

If multiple decks of cards are stored in the card shooter apparatus, then the game can proceed smoothly, but it cannot be determined whether the cards complete a predetermined number before start of the game

Engineering Contradiction:
Improvegame operation efficiencyVSAvoidcard count accuracy
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The patent implements continuous optical monitoring of the card stack within the card shooter apparatus. Optical sensors continuously detect the presence, position, and characteristics of cards as they are stacked or removed, maintaining an ongoing count without interrupting game operations. This continuous detection method allows the system to track the card inventory in real-time, ensuring that the predetermined number of cards (e.g., 416 cards for eight decks) is maintained throughout the game while preserving operational efficiency.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The patent incorporates feedback mechanisms where optical sensors detect card status and provide information to a control system. The system continuously monitors the card stack and can alert operators or automatically stop operations when the card count approaches or reaches zero. This feedback loop ensures accurate tracking of card quantities while allowing smooth game progression, as the system proactively manages card inventory rather than requiring manual counting that would interrupt gameplay.

Inventive Principle:
Principle #23Feedback

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

Enables precise counting of cards and detection of fraudulent cards within the card shooter apparatus, ensuring compliance with casino regulations and preventing fraudulent activities during table games.

Implementation Method 1

an optical sensor that receives reflected light of light irradiated to end surfaces of the plurality of cards stored in the card housing unit

Methodology Applied
Scientific EffectReflected light: Reflection

Data Source

PatentUS9474958B2Card-reading device and table-game system
Publication Date: 2016.10.25 ANGEL GRP CO LTD
  • US9474958B2 patent drawing
  • US9474958B2 patent drawing
  • US9474958B2 patent drawing

AI summary

A card shooter apparatus of a table game system is provided with a card shooter unit having a card housing unit that stores a plurality of cards in a horizontally stacking manner, and a control device configured with a program storage unit, a computer device, etc. is arranged at a lower part of the card shooter apparatus. A lid is provided at an upper part of the card housing unit, and an optical sensor that receives reflected light of light irradiated to end surfaces of the plurality of cards stored in the card housing unit is arranged under the lid. The card shooter apparatus and the table game system make it possible to inspect that the plurality of cards complete a predetermined number (for example, 416 cards in the case of eight decks) in a state of being present in the card shooter apparatus.