Bill Holder Serial Number Tracking for Counterfeit Detection
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Solution Overview
Problem
Existing paper sheet processing systems in gaming machines struggle to accurately manage and identify paper sheets held in the holder unit, making it difficult to detect counterfeit bills or wrong paper sheets based solely on the type of money stored.
Innovation Solution
A paper sheet processing system that includes a reading unit to acquire images of inserted paper sheets, an extraction unit to extract unique serial numbers, and a control unit to send these serial numbers to a host apparatus for storage and comparison, enabling individual management and detection of counterfeit or wrong paper sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If only information on the kind of money is stored in the paper sheet processing apparatus, then the storage unit is simple and easy to manage, but it becomes impossible to individually identify and track specific paper sheets held in the holder unit
Solution Approach 1:
The system divides the identification task into two parts: the paper sheet processing apparatus extracts and sends serial numbers, while the host apparatus stores and manages the serial number database. This segmentation allows individual paper sheet tracking without overcomplicating the local processing apparatus.
Solution Approach 2:
The serial number acts as an intermediary identifier that bridges the paper sheet physical object and the digital record in the host apparatus database. This intermediary enables individual identification without requiring complex direct tracking mechanisms.
2Reliability
If the system stores detailed information including serial numbers of all paper sheets, then individual paper sheet tracking is enabled, but the storage requirements and data management complexity increase
Solution Approach 1:
The system extracts only the essential serial number information from the paper sheet images and sends it to the host apparatus for storage. This extraction approach enables reliable tracking and counterfeit detection while keeping the local apparatus simple and avoiding storage of unnecessary detailed information.
Solution Approach 2:
The host apparatus stores serial numbers and provides feedback by comparing incoming serial numbers against the database. This feedback mechanism enables reliable detection of counterfeit or wrong paper sheets while maintaining a straightforward data management process.
3Ease of operation
If serial numbers are extracted and stored in the host apparatus, then wrong paper sheets can be identified through comparison, but the processing time and computational resources increase
Solution Approach 1:
The system performs preliminary extraction of serial numbers during the paper sheet insertion process itself, rather than waiting for separate verification. This preliminary action enables easy detection of wrong paper sheets without adding significant processing time, as the serial number is captured during the natural flow of operation.
Data Source
AI summary
Provided is a paper sheet processing system capable of preventing circulation of wrong bills and managing the wrong bills. A paper sheet processing apparatus stores the serial number of each bill determined by a verification unit to be genuine to a storage unit and sends the serial number to a management server together with the identification number of a bill holder. In collecting the bills from the bill holder to a bill collection apparatus, the bill collection apparatus reads the serial numbers of the bills with a line sensor and reads the identification number of the bill holder with a reader/writer and sends the serial numbers and the identification number to the management server. The management server compares the serial numbers to determine whether any discrepancy exists. If detecting a discrepancy, the management server sends a detection signal to a management apparatus.