Multi-Primary Color Encoding for Wide-Gamut Display Compatibility
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Solution Overview
Problem
Existing RGB color systems have limitations in achieving a wide gamut and fail to effectively utilize a larger number of primary colors for enhanced color reproduction.
Innovation Solution
A system utilizing a set of primary color signals in the CIE Yu′v′ color space, including luminance (Y) and two independent colorimetric coordinates (u′,v′), with a digital interface for encoding and decoding, and non-linear functions to process these values for display on viewing devices, enabling a multi-primary color system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional RGB color systems are used, then device complexity is low and ease of operation is high, but color gamut is limited and color reproduction accuracy is insufficient
Solution Approach 1:
The patent transitions from the traditional 3-primary RGB color model to a multi-primary color system using more than three primaries (e.g., RGBYCM or RGBCMY). This dimensional expansion in color space allows for significantly wider color gamut and more accurate color reproduction. The system processes color data in extended color spaces such as RYCB or RGCB, enabling representation of colors that cannot be achieved with conventional RGB displays.
Solution Approach 2:
The patent divides the color reproduction task into multiple independent primary color channels (e.g., R, G, B, Y, C, M). Each primary color is processed and controlled separately through dedicated signal paths, allowing independent optimization of each color channel. This segmentation enables precise control over each primary's contribution to the final color output, achieving wider gamut while maintaining systematic organization.
2Measurement precision
If more primary colors are used to expand color gamut, then color reproduction accuracy improves, but device complexity and processing requirements increase
Solution Approach 1:
The patent performs preliminary color space conversion and signal processing before the colors are displayed. Image data is pre-processed in the extended color space (e.g., RYCB or RGCB), with color management and gamut mapping performed in advance. This preliminary action ensures that when the multi-primary display renders the colors, the processing load is reduced and color accuracy is maintained without requiring complex real-time computation during display operation.
3Adaptability or versatility
If multi-primary color systems are implemented, then color gamut expands and color vibrancy improves, but compatibility with existing standards and devices decreases
Solution Approach 1:
The patent introduces intermediate color processing stages and conversion mechanisms that bridge between traditional RGB standards and the extended multi-primary color space. Color management modules serve as intermediaries, converting standard RGB input signals into the extended color space (RYCB or RGCB) while maintaining compatibility with existing content and devices. This intermediary approach allows the system to work with conventional content while delivering enhanced color performance.
Data Source
AI summary
Systems and methods for a multi-primary color system for display. A multi-primary color system increases the number of primary colors available in a color system and color system equipment. Increasing the number of primary colors reduces metameric errors from viewer to viewer. One embodiment of the multi-primary color system includes Red, Green, Blue, Cyan, Yellow, and Magenta primaries. The systems of the present invention maintain compatibility with existing color systems and equipment and provide systems for backwards compatibility with older color systems.