2D Bar Code with Solid Borders and Tick Marks
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Solution Overview
Problem
Conventional two-dimensional bar code symbologies face challenges in efficiently encoding and decoding large amounts of data, particularly in noisy, distorted, or poorly lit images, and require enhanced security features to prevent fraudulent use.
Innovation Solution
A two-dimensional bar code symbol with four solid borders, alternating shade tick marks, and data cells, which facilitates efficient image acquisition, binarization, and decoding, including error correction and encryption, to accommodate noisy and distorted images while ensuring secure data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional two-dimensional bar code symbologies are used to encode large amounts of data, then data capacity is improved, but reliability in noisy or distorted images deteriorates
Solution Approach 1:
The patent applies error correction coding techniques that pre-add redundant data to the encoded information before it is stored in the two-dimensional symbol. This allows the decoding system to correct errors that occur during image acquisition in noisy or distorted conditions, thereby maintaining high reliability without reducing data capacity.
Solution Approach 2:
The patent implements verification and error detection mechanisms that provide feedback during the decoding process. When errors are detected in noisy images, the system can request re-acquisition or use error correction algorithms to recover the original data, ensuring reliable decoding even when image quality is poor.
2Quantity of substance
If conventional two-dimensional bar code symbologies are used, then data capacity is improved, but resistance to fraudulent use deteriorates
Solution Approach 1:
The patent incorporates cryptographic encoding and encryption techniques that transform the data representation within the symbol. By using encrypted data fields and authentication codes, the system prevents fraudulent copying or modification of the symbol while maintaining full data capacity for legitimate use.
3Measurement precision
If image acquisition of entire carrier medium is performed, then two-dimensional symbol location is improved, but processing time deteriorates
Solution Approach 1:
The patent employs feature detection algorithms that extract and focus only on the critical characteristics of the two-dimensional symbol from the acquired image, rather than processing the entire image data. This allows rapid location and identification of the symbol within the carrier medium while maintaining accurate positioning, significantly reducing processing time.
4Productivity
If conventional binarization methods are used, then decoding speed is improved, but accuracy in poorly lit images deteriorates
Solution Approach 1:
The patent applies preliminary image preprocessing steps including adaptive thresholding and noise filtering before binarization. These preprocessing operations adjust to local lighting conditions and prepare the image data in advance, enabling accurate binarization even in poorly lit areas without significantly impacting the overall decoding speed.
Data Source
AI summary
Disclosed is an identification symbol and system and method for reading in accordance with the present invention is preferably a two-dimensional, rectangular or square bar code symbol having a solid border, a tick-mark region adjacent to the solid border, a omni-directional reading and error detection and correction capability.