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
Engineering 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
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.
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.
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
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.
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.
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
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.
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.
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
Data Source
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.


