Display Color Inversion for Power Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
As electronic devices with increasing display size and resolution face power consumption challenges, conventional power saving methods struggle to effectively reduce current consumption, particularly due to high data throughput and processor demands, limiting battery life.
Innovation Solution
Implementing a power saving mode that recognizes areas to preserve color content and reverses colors outside these areas, converting white to black and maintaining image visibility, thereby reducing display panel current consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display size and resolution are increased, then the display quality is improved, but the power consumption increases
Solution Approach 1:
The patent applies color inversion technology that converts color display to grayscale display by inverting the color values. This changes the display from full-color (RGB) to grayscale (luminance only), significantly reducing the power consumption of the display panel while maintaining readable content. The color inversion is selectively applied to different regions of the screen based on content type.
Solution Approach 2:
The patent implements selective color inversion where different regions of the display are treated differently. Important content areas (such as text regions) are inverted to grayscale for power saving, while other areas (such as images or notifications) may retain color or be treated differently. This local differentiation optimizes power consumption while preserving user experience.
2Use of energy by moving object
If conventional power saving methods are used, then power consumption is reduced, but the effectiveness is insufficient due to high data throughput and processor demands
Solution Approach 1:
The patent implements color inversion at the display rendering level, which directly reduces the power consumption of the display panel without requiring reductions in processor clock speed or data throughput. This approach targets the display component specifically, achieving effective power savings while maintaining system performance.
3Use of energy by moving object
If the display is converted to black and white for power saving, then power consumption is reduced, but image visibility may be compromised
Solution Approach 1:
The patent uses color inversion (converting to grayscale) rather than simple black-and-white conversion. This inversion technique maintains better contrast and readability by preserving the luminance information while eliminating color data, thus reducing power consumption while maintaining image visibility and content readability.
Solution Approach 2:
The patent selectively applies color inversion to different regions of the display based on content importance. Critical content areas maintain higher visibility through selective inversion, while less important areas are inverted for power savings. This regional differentiation preserves overall image visibility while achieving power reduction.
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
An electronic device and a method of reducing power consumption in an electronic device are provided. The electronic device includes a display device configured to display a color screen, a battery, at least one processor electrically connected to the display device and the battery, and a memory electrically connected to the at least one processor, wherein the memory stores instructions to allow the at least one processor to monitor a charging level of the battery, to convert at least some areas of the color screen to be displayed on the display device to black and white in response to one of a monitored battery charging level and a user input and to reverse at least a part of the areas converted to black and white when the instructions are executed.