Ledger Document Processing Device Resolution Guidance

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Solution Overview

Problem

Existing slip processing devices face challenges in ensuring consistent image resolution for ledger documents due to varying imaging distances and viewing angles, making it difficult to meet the stipulated resolution requirements for storing images.

Innovation Solution

A slip processing device with a camera and LED indicators that displays a guide frame on the screen to help users adjust the slip area to meet the required resolution, using auto-focus and edge detection to recognize the slip area and adjust the guide frame accordingly, ensuring the stipulated resolution is met before capturing the image.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If image capturing is performed without resolution guidance, then operation simplicity is maintained, but image resolution consistency deteriorates

Engineering Contradiction:
Improveoperation simplicityVSAvoidimage resolution consistency
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

A guide frame is introduced as an intermediary visual element between the user and the slip document. The guide frame displays the required imaging area and resolution requirements, mediating the interaction by guiding users to position and capture images at the correct resolution without requiring users to understand technical resolution parameters

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces manual resolution judgment and adjustment with automated image processing. The processor automatically evaluates captured images against resolution requirements and provides feedback, substituting the mechanical/manual process of resolution checking with an automated computational system

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

2Manufacturing precision

If resolution requirements are strictly enforced, then image quality is improved, but ease of operation deteriorates

Engineering Contradiction:
Improveimage resolution qualityVSAvoidoperation complexity
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The system performs self-evaluation of captured images by automatically processing and analyzing image resolution quality. The processor evaluates whether captured images meet the required resolution standards and provides automated feedback, allowing the system to serve itself in quality control without requiring manual intervention

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent implements a feedback mechanism where the processor analyzes captured images and provides information back to the user about whether resolution requirements are met. This feedback loop enables users to adjust their imaging approach based on system evaluation, ensuring quality without requiring users to manually assess technical parameters

Inventive Principle:
Principle #23Feedback

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 device reliably captures slip images at the stipulated resolution by guiding users to adjust the viewing angle and imaging distance, ensuring the image quality meets the necessary standards, as indicated by the LED indicators changing from red to green when the resolution is adequate.

Implementation Method 1

a camera 7 for capturing images of slips

Methodology Applied
Scientific EffectImage formation by camera: Photography

Implementation Method 2

A slip processing device with a camera and LED indicators

Methodology Applied
Scientific EffectLight emission from LED: Light Emitting Diode

Data Source

PatentEP3379455B1Ledger document processing device, ledger document processing method and storage medium
Publication Date: 2022.07.06 CASIO COMPUTER CO LTD
  • EP3379455B1 patent drawingFigure 1A~1B
  • EP3379455B1 patent drawingFigure 2
  • EP3379455B1 patent drawingFigure 3

AI summary

A ledger document processing device (1) including a display section (15) which displays a live view image captured by an imaging section while waiting for a ledger document to be captured, and a processor(11) which actualizes functions including judging whether a pixel-count size of an area corresponding to the ledger document in an image to be captured and stored in response to an imaging instruction is equal to or larger than a reference pixel-count size while waiting for the ledger document to be captured, notifying a user of a judgment result, and storing in a storage section the image captured by the imaging section in response to the imaging instruction.