Code Detection Search Area Expansion for Misaligned Manuscripts
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Solution Overview
Problem
Existing methods for securing printed matter by embedding bar codes face challenges in detecting the code accurately, especially when the manuscript is not properly aligned on the copying machine, leading to increased processing time and potential failures in code detection.
Innovation Solution
An apparatus with a control unit to print codes within a prescribed area and a search unit that searches for the code in a wider area, ensuring accurate detection even if the manuscript is not aligned correctly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the bar code is printed in a predetermined region and detection is limited to that region, then detection time is reduced, but detection reliability decreases when the manuscript is not properly aligned
Solution Approach 1:
The detection area is divided into two parts: a prescribed area where the bar code is printed and a search area that is wider than the prescribed area. The search unit searches the code in the search area, which includes the prescribed area. This segmentation allows the system to maintain fast detection by focusing on the prescribed area while ensuring reliability by expanding the search area to accommodate misalignment.
2Reliability
If the search area is made wider than the prescribed area, then code detection reliability is improved, but processing time increases
Solution Approach 1:
The detection area is divided into a prescribed area and a search area. The search unit searches the code in the search area, which is wider than the prescribed area. This segmentation allows the system to maintain fast detection by focusing on the prescribed area while ensuring reliability by expanding the search area to accommodate misalignment.
Solution Approach 2:
The bar code is pre-printed within the prescribed area on the sheet before copying. This preliminary action ensures that even if the manuscript is misaligned, the code will be detected in the wider search area, maintaining detection reliability without requiring additional processing time for code generation.
3Reliability
If conventional bar code detection processing is added to detect trace information, then security management is improved, but processing hours in copying increase
Solution Approach 1:
The bar code is pre-printed within the prescribed area on the sheet before copying. This preliminary action embeds the trace information in advance, so that during copying, the system only needs to detect and read the pre-existing code rather than generating and processing new codes, thereby reducing processing time while maintaining security management.
Solution Approach 2:
The patent uses a bar code that copies trace information from the original sheet to the copied sheet. The search unit detects the bar code on the copied sheet, which contains the trace information from the original. This copying mechanism allows security management to be maintained without requiring complex real-time processing, as the trace information is already embedded in the copied output.
Data Source
AI summary
An apparatus according to the present invention comprises control unit configured to control print unit to print a code in a prescribed area on a sheet, and search unit configured to search the code on the sheet placed on a manuscript table, wherein a search area in which the search unit searches the code is wider than the prescribed area.