Paper Sheet Processing Device Duplicate Detection
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Solution Overview
Problem
Paper sheet processing devices face challenges in accurately detecting and addressing duplicate processing errors, which can lead to miscalculations, such as counting a paper sheet multiple times, making it difficult to determine when and why the error occurred and how to correct it.
Innovation Solution
A paper sheet processing device equipped with an intake unit, recognition unit, memory, and processing unit that reads serial numbers, stores them, and searches for duplicates, allowing for early detection and notification of duplicate processes, enabling the user to choose actions to rectify the issue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the processing unit performs processing on paper sheets without duplicate detection, then processing speed is maintained, but miscalculation errors occur due to duplicate processes on the same paper sheet
Solution Approach 1:
The system performs preliminary actions by reading and storing serial numbers of paper sheets in memory before processing occurs. This preliminary recording enables subsequent duplicate detection by comparing current sheet serial numbers against previously processed sheets, allowing accurate detection of duplicate processes while maintaining processing reliability.
Solution Approach 2:
The system creates a copy of the serial number information and stores it in memory. This copied data serves as a reference for duplicate detection, allowing the system to identify previously processed sheets without requiring complex real-time analysis during processing, thus resolving the contradiction between reliability and complexity.
2Reliability
If the system detects duplicate processes, then processing accuracy is improved, but processing time increases due to additional detection operations
Solution Approach 1:
The system performs preliminary action by reading and storing serial numbers in memory before processing. This pre-stored information enables rapid duplicate detection during processing by simple comparison operations, rather than requiring complex analysis after processing occurs, thus improving detection accuracy while minimizing time loss.
Solution Approach 2:
The system replaces complex mechanical duplicate detection methods with an information-based approach using serial numbers and memory storage. This substitution allows for rapid, accurate duplicate identification through data comparison rather than physical re-examination of paper sheets, resolving the time accuracy trade-off.
3Measurement precision
If serial numbers are stored in memory for duplicate detection, then duplicate processes can be detected accurately, but memory resources are consumed
Solution Approach 1:
The system extracts only the essential identifying information (serial numbers) from paper sheets and stores only this extracted data in memory for duplicate detection. This selective extraction approach enables accurate duplicate detection while consuming minimal memory resources, as only compact numerical identifiers are stored rather than complete sheet information.
Solution Approach 2:
The system changes the parameter representation by converting physical paper sheet properties into compact serial number parameters for storage. This parameter transformation allows for precise duplicate detection using minimal memory capacity, as serial numbers provide unique identification with far less storage requirement than storing complete sheet data.
Data Source
AI summary
Disclosed herein is a paper sheet processing device 100 including: a hopper unit 2 configured to take in paper sheets; a recognition unit 3 configured to read serial numbers of the paper sheets taken in through the hopper unit 2; a database 1202 configured to store the serial numbers read by the recognition unit 3; and a control unit 120 configured to process the paper sheets. The control unit 120 searches the serial numbers stored in the database 1202 for any duplicated serial number, and detects, when finding any duplicated serial number, that duplicate processes have been performed on a paper sheet identified by the duplicated serial number.