Information Processing Apparatus Multiplexing Document Data for Image Restoration
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Solution Overview
Problem
Existing technologies struggle to effectively restore the original color and shape accuracy of digital documents after they undergo printing and scanning, leading to image deterioration.
Innovation Solution
An information processing apparatus that connects an image forming unit and a reading unit, using multiplexing techniques to embed document data into image data during printing, allowing for accurate restoration of the document data during scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If color information is restored using multiplexed data from printed images, then color deterioration is improved, but shape restoration accuracy deteriorates
Solution Approach 1:
The patent segments the restoration process into two distinct parts: color restoration using multiplexed data and shape restoration using PDL data. By separating these functions, the system can optimize each independently - using multiplexed color information for color accuracy while using PDL vector data for precise shape restoration, thus resolving the contradiction between color and shape restoration accuracy
Solution Approach 2:
The patent introduces PDL (Page Description Language) data as an intermediary element that carries shape information independently of the printed image. This intermediary allows the system to restore shapes with high accuracy from the original PDL data while separately handling color restoration from multiplexed data, eliminating the trade-off between color and shape accuracy
2Reliability
If document data is multiplexed on image data, then image deterioration is suppressed, but device complexity increases
Solution Approach 1:
The patent makes the information processing apparatus multi-functional by integrating both printing and scanning capabilities with data multiplexing and restoration functions. This universal device can handle the entire workflow from original document to printed copy and back to restored document, reducing the need for separate specialized devices and simplifying the overall system architecture
Solution Approach 2:
The patent applies preliminary action by embedding multiplexed document data into the image data during the printing phase. This pre-embedded data is then readily available for restoration during scanning, eliminating the need for complex real-time analysis and reducing processing complexity during the restoration phase
Data Source
AI summary
An information processing apparatus connected to an image forming unit and a reading unit is provided. The apparatus generates image data based on document data described in a page description language, encodes the document data to be multiplexed on the image data, outputs the image data to the image forming unit, restores the multiplexed document data from the image data read by the reading unit, and saves the image data read by the reading unit and the document data restored by a restoration unit.