Display Device Color Processing Buffer Coordination
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Solution Overview
Problem
Display devices often exhibit color nonuniformity due to manufacturing variations, misalignment of color filters, and LED color variations, leading to noticeable tint differences when multiple devices are arranged side-by-side, which affects the visual appearance and user experience.
Innovation Solution
Implementing a method where a display device divides video data into multiple buffers corresponding to different regions and adjusts color processing by receiving and coordinating color maps from neighboring devices to match RGB gains, thereby reducing color differences at boundaries between display devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If display devices are manufactured with standard processes, then production cost and time are reduced, but color uniformity deteriorates due to manufacturing variations and misalignment
Solution Approach 1:
The system performs preliminary color characterization during manufacturing or initialization, creating color maps that capture the specific color properties of each display device. This preliminary action allows standard manufacturing processes to be used while compensating for variations through software-based color correction applied during operation.
Solution Approach 2:
The system changes color processing parameters dynamically by applying different color maps to different display devices. By adjusting RGB gain values and other color parameters based on measured characteristics, the system compensates for manufacturing variations without requiring precise manufacturing control.
2Area of stationary object
If multiple display devices are arranged side-by-side, then display area is increased, but color discontinuities appear at boundaries due to color nonuniformity
Solution Approach 1:
The system applies local quality correction by using color maps that are specific to each display device's characteristics. Each device receives customized color processing parameters tailored to its specific panel variations, ensuring that boundary regions match in color appearance while maintaining optimal color reproduction across the entire display area.
Solution Approach 2:
The system creates a digital copy or model of each display device's color characteristics through color mapping. This color map serves as a reference that can be applied consistently across multiple devices of the same type, allowing color matching at boundaries without requiring physical calibration of each individual device.
3Manufacturing precision
If color processing is adjusted for each display device, then color uniformity is improved, but system complexity increases due to multiple color maps and coordination requirements
Solution Approach 1:
The system achieves universality by developing a standardized color mapping framework that can be applied across multiple display devices regardless of minor manufacturing variations. The same color processing architecture and coordination protocol work for any number of display devices, reducing the need for device-specific complex processing while maintaining color uniformity.
Data Source
AI summary
In some examples, a method includes dividing, by a first display device, video data into multiple buffers corresponding to regions of the video data. In some examples, the method includes receiving, by the first display device, an indicator from a second display device. In some examples, the method includes controlling, by the first display device, color processing of data of a first buffer of the multiple buffers based on the indicator to coordinate with the second display device.