Mark Authentication via Light Spectrum Analysis

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Solution Overview

Problem

Existing methods for authenticating marks using light spectra are unreliable under varying conditions, leading to high false positive and false negative results, especially in hand-held devices and automated processing lines, due to influences from the mark's surroundings and environmental factors.

Innovation Solution

A method and device that obtain a light spectrum from a mark, apply a set of rules and statistical processing to determine authenticity, combining multiple decision trees and statistical analyses to generate a reliable output result, capable of handling variations in mark design, surroundings, and environmental conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional light spectrum authentication methods are used, then the authentication process is simple and fast, but the reliability is low due to high false positive and false negative results under varying conditions

Engineering Contradiction:
Improveauthentication reliabilityVSAvoidprocessing complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The authentication process is divided into multiple independent decision trees, each analyzing specific characteristics of the light spectrum. This segmentation allows the system to evaluate different aspects (fluorescence intensity, spectrum shape, peak positions) separately and combine results, improving reliability while keeping individual analysis steps manageable and interpretable

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system applies statistical processing and multiple decision trees beyond what a single conventional method would use. By employing excessive analysis (multiple trees, statistical aggregation), the system compensates for individual method limitations and achieves higher overall reliability despite increased processing complexity

Inventive Principle:
Principle #16Partial or excessive action

2Reliability

If multiple authentication methods are combined to improve reliability, then false positives and negatives are reduced, but the processing time and computational resources increase

Engineering Contradiction:
Improveauthentication reliabilityVSAvoidprocessing time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary filtering and preprocessing of the light spectrum data before applying multiple decision trees. By preparing the data in advance (normalization, feature extraction, preliminary classification), the subsequent multiple-tree analysis can proceed more efficiently, reducing overall processing time while maintaining the reliability benefits of multiple authentication methods

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system uses statistical processing to aggregate results from multiple decision trees efficiently. Rather than running each tree independently and sequentially without optimization, statistical methods (such as voting, averaging, or confidence scoring) allow parallel or semi-parallel evaluation, reducing the time penalty associated with multiple authentication approaches

Inventive Principle:
Principle #16Partial or excessive action

3Productivity

If simple authentication rules are used, then the processing is fast and resource-efficient, but the accuracy decreases under varying environmental conditions

Engineering Contradiction:
Improveprocessing efficiencyVSAvoidauthentication accuracy
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The decision trees analyze multiple parameters of the light spectrum simultaneously (intensity, wavelength distribution, fluorescence characteristics, peak positions, spectrum shape). By changing from a single-parameter check to multi-parameter analysis, the system achieves higher accuracy under varying conditions while maintaining processing efficiency through optimized parameter evaluation algorithms

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system replaces simple threshold-based mechanical rules with statistical processing and data-driven decision models. This substitution allows the authentication to adapt to varying environmental conditions through statistical patterns rather than rigid thresholds, improving accuracy while maintaining computational efficiency through optimized statistical algorithms

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 solution significantly enhances the reliability of mark authentication by reducing false positives and negatives, ensuring efficient and accurate results in both hand-held and automated applications without excessive resource requirements.

Implementation Method 1

the mark may comprise a one- or two-dimensional bar code with which a relatively large amount of information can be encoded in relatively small characters

Methodology Applied
Scientific EffectFluorescence: Fluorescence

Implementation Method 2

a marker that emits light under illumination

Methodology Applied
Scientific EffectLight emission: Luminescence

Data Source

PatentUS11138400B2Mark authentication from light spectra
Publication Date: 2021.10.05 SICPA HOLDING SA
  • US11138400B2 patent drawing
  • US11138400B2 patent drawing
  • US11138400B2 patent drawing

AI summary

Authenticating a mark having a marker that emits light under illumination, involving an obtaining of a light spectrum from the mark, the light spectrum having values, each value indicating a light intensity of the light emitted from the mark for a corresponding wavelength, an applying of a set of rules onto the values of the light spectrum to obtain a first result indicating whether the mark is authentic or not, an applying of statistical processing onto the values of the light spectrum to obtain a second result indicating whether the mark is authentic or not, and a generating of an output result indicating whether the mark is authentic or not from the first result and the second result.