Composite Two-Dimensional Code Using Color Filtering Against Duplication
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Solution Overview
Problem
Existing two-dimensional codes are vulnerable to both mechanical and electronic duplication, necessitating a solution that prevents forgery and unauthorized reproduction.
Innovation Solution
A composite two-dimensional code comprising multiple colored cells and a filtering process to separate these cells into individual codes, preventing accurate mechanical duplication and electronic reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a two-dimensional code is used to encode information, then information capacity is improved, but vulnerability to duplication and forgery worsens
Solution Approach 1:
The patent divides the two-dimensional code into multiple color components (first color cells, second color cells, third color cells) that can be separated through filtering processing. This segmentation allows the code to be split into multiple independent two-dimensional codes, each containing different information, thereby preventing duplication while maintaining high information capacity
Solution Approach 2:
Different regions of the code (different color cells) have different properties and functions. The first color cells, second color cells, and third color cells each contribute differently to the overall code structure and information encoding, with each color component being processable independently through specific filtering operations
2Loss of information
If multiple colors are used in the two-dimensional code, then information capacity is improved, but complexity of reading and processing worsens
Solution Approach 1:
The reading device uses separate filtering processing paths for different color components. Each filter isolates specific color cells (first color, second color, or third color) to generate distinct two-dimensional codes, simplifying the processing of multi-color data by handling each color channel independently rather than processing all colors simultaneously
Solution Approach 2:
Color filtering acts as an intermediary mechanism between the multi-color composite code and the reading device. The filters convert the complex multi-color input into separate, manageable two-dimensional codes that can be processed using standard reading algorithms, bridging the gap between enhanced information capacity and processing capability
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
The composite two-dimensional code effectively prevents both mechanical and electronic duplication by ensuring accurate separation and extraction of encoded information through filtering processes.
Implementation Method 1
an imaging device executes a first filtering processing on a composite two-dimensional code including a first cell having a first color, a second cell having a second color, and a third cell having a third color
Data Source
AI summary
A composite two-dimensional code according to an embodiment of the present invention is a combination of a first two-dimensional code and a second two-dimensional code. The composite two-dimensional code includes a first cell having a first color, a second cell having a second color, and a third cell having a third color. The first color, the second color, and the third color are different from each other. The first two-dimensional code is acquired by a first filtering processing. The second two-dimensional code is acquired by a second filtering processing.