Multi-Primary Display Color Processing for Wider Gamut and Lower Metamerism
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Solution Overview
Problem
Existing color systems, particularly RGB-based displays, are limited in color gamut and face issues with viewer metameric errors and increased power consumption due to narrow emissive spectra, leading to higher operational and capital costs.
Innovation Solution
A multi-primary color system utilizing a set of image data in the CIE Yxy color space with additional primaries like cyan, magenta, and yellow, along with a digital interface for encoding and decoding, enabling wider color gamut displays that include medical image data conversion and compatibility with viewing devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional RGB color system is used, then device complexity is low, but color gamut is limited
Solution Approach 1:
The color system is segmented into multiple independent primary color channels (R, G, B, C, M, Y) that can be individually controlled. This segmentation allows each primary to contribute specifically to different regions of the color space, expanding the overall color gamut while maintaining manageable control through separate signal processing for each channel.
Solution Approach 2:
The patent transitions from the traditional three-dimensional RGB color space to a six-dimensional color space by adding three more primary color channels. This dimensional expansion allows the system to access and reproduce colors that lie outside the conventional RGB gamut, particularly in the cyan, magenta, and yellow regions.
2Measurement precision
If narrow emissive spectra are used, then color saturation is improved, but power consumption increases
Solution Approach 1:
The patent combines multiple emissive sources with different spectral characteristics to produce the six primary colors. By merging these sources and using additive color mixing, the system achieves high color saturation and accuracy while distributing the power consumption across multiple lower-power emitters rather than relying on a single high-power source.
Solution Approach 2:
The system dynamically adjusts the intensity and spectral parameters of each of the six primary color channels based on the required output color. This parameter control allows the display to use only the necessary amount of power for each pixel, reducing overall power consumption while maintaining color accuracy through precise control of emissive spectra.
3Reliability
If traditional RGB system is used, then power consumption is lower, but metameric errors increase
Solution Approach 1:
The color display system uses a composite approach with six different emissive materials or phosphors, each optimized for a specific primary color region. This composite structure allows the system to accurately reproduce a broader range of colors by selecting and combining the appropriate materials, reducing metameric errors while managing power consumption through material optimization.
4Adaptability or versatility
If multi-primary color system is implemented, then color reproduction is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal color processing architecture that can handle both traditional three-primary and extended six-primary color systems through the same basic framework. The color conversion and signal processing circuits are designed to be multi-functional, accepting either RGB or RGBCMY input and adapting accordingly, which reduces the perceived complexity by providing a unified interface despite the expanded color capability.
Data Source
AI summary
The present invention includes 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.