Display Panel Saturation Compensation for Low-Power Luminance Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices face a challenge in reducing power consumption while maintaining visual luminance, as decreasing data voltages to conserve power leads to decreased luminance and visibility.
Innovation Solution
The display device divides the panel into skin and non-skin regions, calculates saturation, value, and hue weights, and compensates input image data using saturation and value compensation values to maintain visual luminance by increasing saturation when luminance decreases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If data voltage is reduced to decrease power consumption, then power consumption is reduced, but luminance decreases and visibility deteriorates
Solution Approach 1:
The patent changes the saturation parameter of image data to compensate for luminance reduction. When data voltage is reduced causing lower luminance, the system increases saturation values in the HSV color space to maintain visual luminance perception, thereby resolving the contradiction between power consumption and luminance
Solution Approach 2:
The patent utilizes color saturation adjustment to offset luminance changes. By modifying the saturation component of the color data while reducing data voltage, the system maintains perceived brightness through enhanced color intensity, thus addressing the trade-off between power consumption and visual luminance
2Illumination intensity
If saturation is increased to maintain visual luminance, then visual luminance is maintained, but image unnaturalness and color distortion increase
Solution Approach 1:
The patent applies different saturation compensation strategies to different regions of the display. Skin tone regions receive different saturation adjustments compared to non-skin regions, preserving natural appearance in critical areas while maintaining visual luminance in other areas, thus resolving the contradiction between visual luminance and color accuracy
Solution Approach 2:
The system dynamically adjusts saturation compensation based on local image characteristics. By analyzing pixel-by-pixel or region-by-region properties and adapting saturation values accordingly, the system maintains visual luminance without causing uniform color distortion, balancing visual luminance and color accuracy
Data Source
AI summary
A display device divides a display panel into a skin region and a non-skin region different from the skin region based on input image data, calculates a saturation weight of the skin region and a saturation weight of the non-skin region, calculates the saturation weight of the non-skin area based on the input image data, and calculates a value weight and a hue weight based on the input image data. The saturation compensation value is determined based on a saturation value of the input image data, the saturation weight, the value weight, and the hue weight, and a value compensation value is determined based on a value value of the input image data. The input image data is compensated based on the saturation compensation value and the value compensation value.