Optical Encoder Scale with 2D Code for Traceability

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Solution Overview

Problem

Existing optical encoder scales lack effective traceability methods, leading to issues with misreading, typographical errors, and inefficiencies in identification processes.

Innovation Solution

Incorporating an optical pattern with two regions of different reflectance or transmittance, along with a two-dimensional code, into the optical encoder scale to ensure accurate and efficient traceability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If identification information is determined with the human eye, then reading accuracy may be compromised, but manual reading is simple and does not require additional equipment

Engineering Contradiction:
Improvereading accuracyVSAvoidequipment requirement
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent introduces a two-dimensional code as an intermediary element on the optical scale that bridges the gap between manual visual inspection and machine-based identification. The two-dimensional code can be read by both human eyes and OCR systems, providing a universal identification mechanism that improves reading accuracy while maintaining simplicity.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent enables substitution of manual visual reading with automated OCR-based reading by incorporating machine-readable two-dimensional codes on the optical scale. This allows the system to transition from purely mechanical/optical visual inspection to automated optical character recognition, improving efficiency and accuracy.

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

2Productivity

If OCR is used to read identification information, then efficiency and cost are improved, but misreading may still occur

Engineering Contradiction:
Improveidentification efficiencyVSAvoidreading accuracy
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The two-dimensional code serves as an intermediary that is specifically designed to be machine-readable while maintaining visual readability. This intermediary format ensures high compatibility with OCR systems, enabling efficient automated reading with reduced misreading errors compared to traditional text-based identification.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the format of identification information from traditional text to two-dimensional code structure. This parameter change in the information representation format enhances machine readability and reduces OCR misreading while maintaining the ability to convey identification data efficiently.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If traditional identification methods are used, then the system remains simple, but traceability and production history tracking are compromised

Engineering Contradiction:
ImprovetraceabilityVSAvoididentification system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The two-dimensional code on the optical scale serves multiple functions: it provides unique identification for traceability, enables both manual and automated reading, and can encode production history information. This multi-functional approach enhances traceability without requiring separate identification systems.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent transitions from one-dimensional text-based identification to two-dimensional code structure. This dimensional change allows for more information to be encoded in a compact space, enabling comprehensive traceability data storage while maintaining a simple appearance on the optical scale.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 proposed solution enhances traceability by improving reading accuracy and reducing labor costs, while also allowing for the recording of extensive information in a compact space.

Implementation Method 1

an optical pattern including two regions with different reflectance or transmittance

Methodology Applied
Scientific EffectReflection: Reflection

Implementation Method 2

an optical pattern including two regions with different reflectance or transmittance

Methodology Applied
Scientific EffectTransmittance: Absorption (EM radiation)

Data Source

PatentUS20250067579A1Optical encoder scale, multifaced optical encoder scale and optical encoder
Publication Date: 2025.02.27 DAI NIPPON PRINTING CO LTD
  • US20250067579A1 patent drawing
  • US20250067579A1 patent drawing
  • US20250067579A1 patent drawing

AI summary

The present disclosure provides an optical encoder scale comprising an optical pattern including two regions with different reflectance or transmittance, wherein the optical encoder scale includes a two-dimensional code.