Document Image Data Reuse for Multi-Format Layout Regeneration

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Solution Overview

Problem

Existing methods for regenerating document image data after a change in page layout require re-reading unchanged pages, leading to inefficiency and increased processing time, especially in N-up printing scenarios where multiple pages are combined on a single sheet.

Innovation Solution

An information processing system that includes a processor to acquire and reuse document image data in a first format for regenerating image data in a second format by extracting reusable data from the first format, reducing the need for re-reading unchanged pages during layout changes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If all pages are re-read to regenerate document image data after a page layout change, then the complete document image data can be regenerated, but the processing time increases and efficiency decreases

Engineering Contradiction:

Improvecompleteness of regenerated document image dataVSAvoidprocessing time for regeneration

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent segments the document into individual page units, allowing selective processing. When a page layout changes, only the affected pages are re-read and regenerated, while unchanged pages are extracted and reused from existing image data. This segmentation enables parallel processing of changed and unchanged portions, significantly reducing total processing time while maintaining complete document regeneration.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent performs preliminary extraction and storage of unchanged page image data before regeneration. By identifying which pages remain unchanged and pre-extracting their image data, the system prepares reusable components in advance. This preliminary action eliminates the need to re-process these pages during regeneration, directly reducing processing time while ensuring data completeness.

Inventive Principle:

Principle #10Preliminary action

2Quantity of substance

If unchanged pages are re-read during document image data regeneration, then all necessary page data is obtained, but the number of read operations increases and efficiency decreases

Engineering Contradiction:

Improvecompleteness of page dataVSAvoidregeneration efficiency

Core Design Contradiction:

Quantity of substanceVSProductivity

Solution Approach 1:

The patent identifies unchanged pages and recovers their image data from previously generated document image data, discarding the redundant re-reading operation. By comparing page layout information before and after changes, the system determines which pages remain unchanged and recovers their image data directly from existing files, eliminating unnecessary read operations while maintaining data completeness.

Inventive Principle:

Principle #34Discarding and recovering

Solution Approach 2:

The patent creates copies of unchanged page image data from the original document image data for reuse in the regenerated document. Instead of re-reading these pages, the system extracts and copies the relevant image data portions, ensuring that the regenerated document contains complete and accurate page data while significantly reducing the number of physical read operations required.

Inventive Principle:

Principle #26Copying

3Adaptability or versatility

If multiple formats of document image data are generated from the same document, then format versatility is achieved, but processing complexity increases when regenerating data in different formats

Engineering Contradiction:

Improveformat compatibilityVSAvoidregeneration process complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent creates a universal page image data extraction mechanism that works across multiple document formats. By establishing a common process for identifying unchanged pages and extracting their image data regardless of the target format, the system achieves format versatility without proportionally increasing complexity. The same extraction logic applies whether generating PDF, image, or other document formats.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent segments the regeneration process into independent format-specific conversion steps and a universal page identification and extraction step. This segmentation allows the complex multi-format regeneration to be broken down into manageable parts: first identify unchanged pages universally, then apply format-specific conversion only where needed. This reduces overall complexity compared to completely regenerating all pages in each format.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250301088A1Information processing system, non-transitory computer readable medium, and information processing method

Publication Date: 2025.09.25 FUJIFILM BUSINESS INNOVATION CORP

AI summary

An information processing system includes a processor configured to: acquire document image data in a first format and document image data in a second format different from the first format, generated from a document including a plurality of pages; when the document image data in the first format includes reusable image data of the page of the document to regenerate the document image data in the second format in response to a change in a layout of the page of the document; extract the reusable image data of the page from the document image data in the first format; and regenerate the document image data in the second format by using the extracted image data of the page.