Multi-Primary Display Color Architecture Beyond BT.2020 Gamut
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Solution Overview
Problem
Existing color systems, such as those based on RGB, struggle to display a wide range of colors beyond the ITU-R BT.2020 color gamut, limiting the representation of colors in digital displays.
Innovation Solution
A multi-primary color system is introduced, incorporating a cyan primary in addition to traditional RGB, allowing for the display of colors outside the ITU-R BT.2020 color gamut, with a viewing device capable of displaying at least 80% of the area covered between 400 nm and 700 nm in the CIE Yxy color space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a traditional RGB color system is used, then the device complexity is low, but the color gamut coverage is limited to ITU-R BT.2020
Solution Approach 1:
The color system is segmented into multiple independent primary color channels (Red, Green, Blue, Cyan, Magenta, Yellow) instead of using a unified RGB system. This allows each primary to be controlled independently, enabling broader color gamut coverage while maintaining manageable device complexity through modular architecture.
Solution Approach 2:
The patent transitions from a 3-primary (RGB) color space to a 6-primary color space by adding Cyan, Magenta, and Yellow primaries. This dimensional expansion in color space allows coverage of colors outside the ITU-R BT.2020 gamut, effectively adding a new dimension to the color representation capability.
2Adaptability or versatility
If a multi-primary color system is implemented, then the color representation capability is improved, but the device complexity increases
Solution Approach 1:
The viewing device is designed with multi-functionality by incorporating multiple primary color emission capabilities (Red, Green, Blue, Cyan, Magenta, Yellow) within a single display system. This universal design allows the device to represent a wide variety of colors across different gamuts, enhancing adaptability while consolidating multiple functions into one device architecture.
3Manufacturing precision
If colors outside ITU-R BT.2020 gamut are displayed, then the visual fidelity is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent changes the fundamental parameters of the color system by introducing additional primary colors (Cyan, Magenta, Yellow) with specific chromaticity coordinates that enable representation of colors outside ITU-R BT.2020. This parameter change in the color space definition allows broader color coverage while the manufacturing precision is managed through standardized production processes for each primary color channel.
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.