Universal Color Separation Table for Printing Mode Gamut Optimization
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Solution Overview
Problem
The existing printing systems face challenges in efficiently utilizing color gamuts across different printing modes due to the need for numerous color separation tables and matching tables, leading to increased processing loads and memory capacity, which degrades user convenience.
Innovation Solution
An image processing method that performs color correction and separation using a common color matching table for multiple printing modes, generating color separation tables to ensure consistent color reproduction within a defined maintaining area, thereby reducing the number of required color matching tables and memory capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a color separation table is generated for each printing mode to maximize color gamut utilization, then color reproduction quality is improved, but the number of color separation tables and memory capacity increase
Solution Approach 1:
The patent applies universality by creating a single color separation table that can be used across multiple printing modes. Instead of generating separate color separation tables for each printing mode (image quality priority mode, speed preference mode, standard mode), the invention develops one universal color separation table that adapts to different printing conditions, thereby reducing memory capacity requirements while maintaining color reproduction quality.
Solution Approach 2:
The patent utilizes parameter changes by adjusting printing conditions (resolution, carriage speed, number of scans) within a single color separation table framework. The color separation table is designed to accommodate variations in printing parameters across different modes, allowing the same table to optimize color gamut utilization regardless of whether the printer operates in high-quality or high-speed mode.
2Adaptability or versatility
If separate color separation tables are prepared for each printing mode, then color gamut is optimized for each mode, but processing complexity and memory requirements increase
Solution Approach 1:
The invention reduces processing complexity by implementing a universal color separation table that serves all printing modes. The system no longer needs to select between multiple mode-specific tables, simplifying the processing workflow. The single table is designed to handle various printing conditions through embedded adaptation mechanisms, maintaining color gamut optimization without requiring complex mode-specific processing.
Solution Approach 2:
The patent merges the functionality of multiple mode-specific color separation tables into a single unified table. By combining the color optimization capabilities for image quality priority mode, speed preference mode, and standard mode into one table, the system reduces processing complexity and eliminates the need for multiple separate tables, thereby simplifying the overall processing architecture.
3Manufacturing precision
If multiple color separation tables are stored for different printing modes, then color reproduction accuracy is improved, but memory capacity requirements increase
Solution Approach 1:
The patent dramatically reduces memory capacity requirements by replacing multiple mode-specific color separation tables with a single universal table. The universal table is designed to maintain color reproduction accuracy across different printing modes through adaptive mechanisms, eliminating the need to store separate tables for image quality priority mode, speed preference mode, and standard mode, thereby freeing up significant memory resources.
Data Source
AI summary
A color gamut for each printing mode is maximally used, a color separation table is used, which includes an area (color reproduction maintaining area) for which an image having a color difference of a predetermined value or less between printing modes in a case where the same input value is input is output and an area (area other than the color reproduction maintaining area) for which an image having a color difference of a predetermined value or more between the printing modes in a case where the same input value is input is output. From this, a color matching table can be shared between the printing modes.