Adaptive Color Gamut Shift Module for Display Power Reduction
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Solution Overview
Problem
Conventional display devices face issues with color distortion and increased current consumption during complex image rendering, particularly when the color difference between adjacent pixels is large, leading to inefficient power usage.
Innovation Solution
A device and method for controlling a color gamut using a color gamut shift module that adaptively reorganizes the look-up table (LUT) for color mapping based on external factors or user settings, allowing for a low-power operation by shifting the white point of the color gamut, thereby reducing current consumption while maintaining accurate color expression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional color mapping is performed by adding weighted values to specific colors, then color correction is achieved, but color distortion occurs
Solution Approach 1:
The patent implements dynamic color gamut adjustment by adaptively changing the color gamut based on image characteristics. The system analyzes the input image and dynamically selects or adjusts the color gamut LUT to match the image content, allowing the color mapping parameters to vary according to the specific image being displayed rather than using fixed conventional color mapping weights.
Solution Approach 2:
The patent changes the fundamental parameters of color mapping by using a variable color gamut LUT instead of fixed weighted values. The system modifies the color gamut parameters (such as chroma and saturation levels) based on image analysis, enabling adaptive color correction that avoids the distortion inherent in conventional fixed-weight color mapping approaches.
2Measurement precision
If color mapping is performed with high complexity images, then color accuracy is maintained, but current consumption increases
Solution Approach 1:
The patent applies partial color gamut adjustment by selectively modifying only the necessary color parameters based on image characteristics. Rather than performing full-color mapping calculations for all pixels regardless of content, the system analyzes the image and applies color gamut adjustments only where needed, reducing computational load and current consumption while maintaining color accuracy for complex images.
Solution Approach 2:
The system dynamically adjusts the intensity and scope of color gamut processing based on image complexity analysis. For simpler images, minimal processing is applied to reduce power consumption, while for complex images requiring higher color accuracy, the system activates full color gamut adjustment. This dynamic adaptation allows the system to optimize the balance between color accuracy and energy consumption based on real-time image characteristics.
Data Source
AI summary
A device for controlling a color gamut includes: a color mapping module which converts a source image signal, based on a first color gamut look-up table; and a color gamut shift module which sets a second color gamut look-up table, based on a grayscale value determined corresponding to an external factor or user setting. When the color gamut shift module is enabled, the color mapping module converts the source image signal, based on the second color gamut look-up table.