System and method for a multi-primary wide gamut color system
Inventors
Bogdanowicz, Mitchell J. • Carbonara, Corey P. • Korpi, Michael F. • DeFilippis, James M. • Mandle, Gary B.
Assignees
Publication Number
US-12243464-B2
Publication Date
2025-03-04
Expiration Date
2039-10-21
Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Abstract
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.
Core Innovation
The invention discloses systems and methods for a multi-primary color system that expands the number of primary colors used for display equipment, beyond the traditional red, green, and blue (RGB) primaries. One exemplary embodiment includes primary color signals such as red, green, blue, cyan, yellow, and magenta (RGBCMY), and features an image data converter supporting encoding and decoding in the International Commission on Illumination (CIE) Yxy color space. The system is particularly designed to be used with devices configured for virtual reality, augmented reality, and/or mixed reality environments, and maintains compatibility with existing color systems and equipment.
The main problem addressed by the invention is the limitation of current RGB-based color systems, which offer a limited color gamut and can cause increased metameric errors (color perception discrepancies among viewers) due to narrow spectral emissions when expanding the gamut. Current systems are also constrained by higher power requirements and operational complexities, and do not support the transport or storage of additional color primary information beyond display-internal processes.
The core solution involves encoding image data as values in the CIE Yxy color space (with luminance and two independent colorimetric coordinates), transporting this data over at least three channels, and using an image data converter that enables conversion between multiple color gamuts and supports both full and subsampled data processing. The invention also specifies methods for handling the encoding and decoding process, incorporating at least one non-linear function during processing, and enabling the system to function seamlessly with both legacy and multi-primary displays, including AR/VR/MR headsets with various hardware components.
Claims Coverage
The patent contains three independent claims, each defining a distinct inventive feature in the field of multi-primary color display systems and methods.
Multi-primary color display system using CIE Yxy color space for AR/VR/MR devices
A system comprising: - A set of image data including primary color signals corresponding to values in CIE Yxy color space. - An image data converter including a digital interface operable to encode and decode these Yxy values. - A device (such as a headset) configured for virtual reality, augmented reality, and/or mixed reality environments, in communication with the image data converter. - Encoding and decoding processes that include transportation of processed Yxy data on at least three channels. - The image data converter operable to convert image data for display on the device.
Multi-primary color display system with explicit Yxy channel and device display capability
A system comprising: - A set of image data with primary color signals expressed as CIE Yxy color space values, which include luminance and two colorimetric coordinates (x and y). - An image data converter operable to encode and decode these Yxy values. - A device configured for virtual reality, augmented reality, and/or mixed reality environments. - Encoding and decoding processes transporting processed Yxy data on three channels. - The device operable to display converted image data from the image data converter.
Method for displaying a primary color system with Yxy encoding and multi-channel transport
A method comprising: 1. Providing a set of image data including primary color signals corresponding to CIE Yxy color space values. 2. Encoding the image data in the Yxy color space using an image data converter. 3. Processing the image data in the Yxy color space. 4. Decoding the image data in the Yxy color space using the image data converter. 5. The image data converter converting the image data for display on a device configured for virtual reality, augmented reality, and/or mixed reality environments. 6. The encoding and decoding include transportation of processed Yxy data on multiple channels.
In summary, the independent claims cover a system and method to display multi-primary color signals in AR/VR/MR devices, utilizing encoding and decoding of image data as CIE Yxy color space values transported on multiple channels, and enabling flexible conversion and display capabilities.
Stated Advantages
Increases the number of primary colors available, reducing metameric errors from viewer to viewer.
Maintains compatibility with existing color systems and equipment, providing systems for backward compatibility with older color systems.
Documented Applications
Use in devices configured for virtual reality, augmented reality, and/or mixed reality environments.
Integration with AR/VR applications on remote devices for personalized profile development and graphical, audible, or tactile feedback.
Interested in licensing this patent?