Print Inspection Apparatus Blank Data Collation Logic

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Solution Overview

Problem

Existing print inspection systems cannot accurately distinguish between a blank in a barcode area due to data omission versus a blank intentionally placed by the user, leading to unnecessary inspection failures and potential misinterpretation of printed documents.

Innovation Solution

An inspection apparatus that determines whether the correct data is blank in the collation inspection, allowing for successful inspection results when the correct data is intentionally blank, and failing when it is not, by analyzing the inspection area and outputting appropriate results based on this determination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If collation inspection is performed without checking whether correct data is blank, then inspection can be performed efficiently, but inspection accuracy deteriorates because blanks cannot be distinguished from data omissions

Engineering Contradiction:
Improveinspection efficiencyVSAvoidinspection accuracy
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The inspection apparatus performs preliminary determination of whether the correct data is blank before conducting the collation inspection. This preliminary action allows the system to prepare the inspection logic in advance, checking the blank status of correct data and adjusting the inspection criteria accordingly, thereby maintaining both efficiency and accuracy.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system changes the inspection parameter based on whether the correct data is determined to be blank. When correct data is blank, the inspection apparatus adjusts the comparison criteria to accept blank values, thereby changing the parameter of acceptable data states to maintain inspection accuracy while preserving efficiency.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If inspection always determines failure when barcode area is blank, then data omission can be detected, but false positive increases for intentionally blank areas

Engineering Contradiction:
Improvedata omission detectionVSAvoidfalse positive inspection failures
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The inspection apparatus uses feedback from the correct data determination to adjust the inspection result. By checking whether the correct data is blank and using this feedback information, the system can distinguish between intentional blanks and data omissions, preventing false positive failures while maintaining reliable detection of actual errors.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system changes the inspection outcome parameter based on the determination of correct data blank status. When correct data is blank, the inspection parameter is adjusted to accept blank values, thereby changing the result from automatic failure to success and preventing false positive inspection failures.

Inventive Principle:
Principle #35Parameter changes

3Device complexity

If inspection apparatus does not check correct data blank status, then device complexity is low, but measurement precision deteriorates in distinguishing blank types

Engineering Contradiction:
Improveinspection system simplicityVSAvoidblank differentiation capability
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The inspection apparatus performs a preliminary determination of whether the correct data is blank before conducting the collation inspection. This preliminary action adds minimal complexity while significantly improving the ability to distinguish between intentional blanks and data omissions, achieving high measurement precision without substantial system complexity increase.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11842094B2Inspection apparatus and method for inspecting a printed material
Publication Date: 2023.12.12 CANON KK
  • US11842094B2 patent drawing
  • US11842094B2 patent drawing
  • US11842094B2 patent drawing

AI summary

An inspection apparatus includes at least one memory that stores instructions, and at least one processor that executes the instructions to perform determining, in a case where an image of an inspection area is a blank and collation inspection is to be performed on the image of the inspection, whether correct data in the collation inspection is a blank, outputting an inspection result for the inspection area as a success, in a case where it is determined that the correct data is a blank, and outputting an inspection result for the inspection area as a failure, in a case where it is determined that the correct data is not a blank.