Wearable Code Reader Local Processing Reduces Latency

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Solution Overview

Problem

Complex work systems experience latencies between code reading and feedback, leading to user waiting times and inefficiencies due to the need for responses from a central control system.

Innovation Solution

A wearable code reading system with a code reader attached to a garment, featuring a reader unit and control unit connected via wired connections, capable of decoding and comparing scanned codes against test conditions locally, providing immediate feedback without relying on central system responses.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If code scanning and feedback processing are centralized in a control system, then system reliability is improved, but response time increases due to communication latencies

Engineering Contradiction:
Improvesystem reliabilityVSAvoidresponse time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent divides the centralized control system into distributed components: local control units are assigned to individual workstations or process steps, each capable of independently evaluating scanned codes and providing immediate feedback. This segmentation eliminates communication bottlenecks while maintaining system reliability through distributed decision-making.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Test conditions and evaluation criteria are pre-configured and stored in the local control units before operation begins. When a code is scanned, the local unit immediately compares it against pre-loaded test conditions without requiring real-time communication with a central system, thereby eliminating response delays while ensuring reliable validation.

Inventive Principle:
Principle #10Preliminary action

2Measurement precision

If multiple codes and branches are tested in complex workflows, then process accuracy is improved, but processing time increases due to sequential validation

Engineering Contradiction:
Improveprocess accuracyVSAvoidprocessing time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent implements dynamic test condition evaluation where the local control unit adaptively determines which test conditions to apply based on the scanned code type and current process context. Rather than sequentially checking all possible conditions, the system dynamically selects and evaluates only the relevant test conditions, maintaining high accuracy while reducing processing time.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system performs partial validation by evaluating only the essential test conditions required for the current process step rather than completing the full suite of validation checks. This partial action approach provides sufficient accuracy for immediate feedback while avoiding the time cost of exhaustive validation, with the option to perform additional checks if needed.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS20240095477A1Code reader, code reading system, work system as well as method
Publication Date: 2024.03.21 WORKAROUND GMBH
  • US20240095477A1 patent drawing
  • US20240095477A1 patent drawing

AI summary

A code reader for attachment to a garment including a reader unit, a control unit as well as a communication module for wireless data transmission. The reader unit, the control unit and the communication module have wired connections to each other. The reader unit is configured to scan a code, to decode the scanned code into a character string and to transfer the character string to the control unit. The control unit includes at least one test condition and is configured to receive the character string, to compare the character string with said at least one test condition, and to execute an action depending on the result of the comparison. Moreover, a wearable code reading system, a work system and a method are shown.