Card Identifying Apparatus Moire Pattern Generation
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Solution Overview
Problem
Existing card identifying apparatuses face challenges in improving authentication judgment accuracy while maintaining cost-effectiveness, as they require higher-resolution sensors and frequent updates to filters, leading to increased manufacturing costs.
Innovation Solution
A card identifying apparatus that reads card information on a pixel basis, stores image data, and adjusts the number of pixels to generate moire patterns, allowing for authentication judgment without the need for new filters or high-resolution sensors, by increasing or decreasing pixel numbers in image data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor with higher resolution is used to improve authentication judgment accuracy, then measurement precision is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent creates a virtual copy of the moire pattern generation process through software-based pixel increasing/decreasing operations instead of using physical high-resolution sensors or filters. The image processing section generates moire patterns by algorithmically increasing or decreasing pixel numbers in the captured image, thereby replicating the effect of high-resolution sensing without the associated hardware complexity and cost
Solution Approach 2:
The patent changes the parameter of pixel number through software processing to generate moire patterns. By dynamically adjusting the pixel count in the image data through increasing/decreasing operations, the system achieves variable resolution effects without requiring physical sensor or filter changes, thus resolving the contradiction between measurement precision and device complexity
2Measurement precision
If filters with confirmation patterns are updated frequently to improve authentication accuracy, then measurement precision is improved, but manufacturing cost increases
Solution Approach 1:
The patent replaces the physical filter with a software-based moire pattern generation system. Instead of manufacturing and updating physical filters with confirmation patterns, the system uses image processing algorithms to generate the necessary moire patterns digitally, thereby eliminating filter manufacturing costs and simplifying the system
Solution Approach 2:
The patent substitutes the mechanical/optical filter system with an electronic image processing system. The physical filter that required manufacturing and periodic updates is replaced by software-based pixel manipulation operations that generate moire patterns computationally, eliminating the need for physical filter components and their associated manufacturing costs
3Measurement precision
If pixel numbers in image data are increased to generate accurate moire patterns, then measurement precision is improved, but processing time increases
Solution Approach 1:
The patent implements dynamic pixel number adjustment through the increasing/decreasing section, which can adaptively modify pixel counts based on the specific authentication requirements. This dynamic processing allows the system to optimize between processing speed and pattern accuracy by adjusting the degree of pixel manipulation in real-time during the authentication process
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
This approach enables accurate authentication judgment while suppressing cost increases by generating moire fringes through pixel adjustments, eliminating the need for new filters and high-resolution sensors, thus optimizing the authentication process.
Implementation Method 1
irradiating the hidden pattern using a light source, while detecting the reflected light via a confirmation pattern
Implementation Method 2
a microprint has fine line widths, and thereby is known to exhibit a specific pattern (moire fringes; moire pattern) by interference of light, and it is carried out obtaining the moire fringes (moire pattern)
Data Source
AI summary
A card identifying apparatus according to one embodiment of the invention has a light-receiving portion that reads a card on a pixel basis of a predetermined area as a unit including color information having brightness, RAM that stores image data comprised of a plurality of pixels read by the light-receiving portion, a pixel data increasing/decreasing processing section that increases/decreases the number of pixels of the image data, and card identifying means for identifying authentication of the card based on the image data increased/decreased by the pixel data increasing/decreasing processing section.