Display Apparatus Image Complexity Analysis Dimming Control
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Solution Overview
Problem
Existing display apparatuses face challenges in reducing power consumption while maintaining a good viewing experience, as current brightness control technologies either have no effect when the user is viewing or diminish the viewing experience by lowering screen brightness.
Innovation Solution
A display apparatus that analyzes image complexity by obtaining image complexity information for specific analysis areas, classifies these areas based on the information, and generates a dimming control signal to adjust the brightness of each area accordingly, using techniques like PWM or PAM to control the backlight or individual pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the intensity of current to the light source is reduced to reduce power consumption, then power consumption is reduced, but brightness performance deteriorates and viewing experience is diminished
Solution Approach 1:
The display screen is divided into multiple analysis areas, and each area is independently evaluated for image complexity. This segmentation allows different brightness levels to be applied to different regions, enabling power reduction in complex areas while maintaining brightness in important areas, thus resolving the contradiction between power consumption and brightness performance.
Solution Approach 2:
Different brightness control strategies are applied to different analysis areas based on their specific image complexity characteristics. Areas with high image complexity receive greater dimming, while areas with low image complexity maintain higher brightness. This local differentiation allows power consumption to be reduced without uniformly degrading the viewing experience across the entire display.
2Use of energy by moving object
If screen brightness is lowered to reduce power consumption, then power consumption is reduced, but visual impressions felt by the user are changed and viewing experience is diminished
Solution Approach 1:
The brightness control is dynamically adjusted based on real-time analysis of image complexity in each analysis area. The system continuously evaluates the content being displayed and adapts the brightness level accordingly, rather than applying a static dimming level. This dynamic approach ensures that brightness is reduced only when and where it does not affect the viewing experience, maintaining reliability while reducing power consumption.
Solution Approach 2:
The system analyzes image complexity metrics (such as edge density, color variation, and detail content) in each analysis area and uses this feedback to determine the appropriate brightness level. This closed-loop control ensures that brightness adjustments are made based on actual content characteristics, preventing degradation of viewing experience while achieving power savings.
3Device complexity
If uniform brightness control is applied to the entire display, then implementation is simple, but power consumption cannot be effectively reduced without affecting overall viewing experience
Solution Approach 1:
The display is divided into multiple analysis areas that can be independently controlled. This segmentation enables differentiated brightness control across the screen, allowing the system to reduce power consumption in specific regions without requiring complex per-pixel control, thus balancing implementation complexity with power savings effectiveness.
Solution Approach 2:
Adjacent analysis areas with similar image complexity characteristics are grouped together and controlled with the same brightness level. This merging approach reduces the number of independent control decisions needed, simplifying the overall control implementation while still achieving effective power reduction through localized dimming strategies.
Data Source
AI summary
Provided are a display apparatus and an operating method thereof, the display apparatus including: a display; memory storing one or more instructions; and one or more processors configured to execute the one or more instructions stored in the memory, wherein the one or more instructions, when executed by the one or more processors, cause the display apparatus to: obtain, for an image including at least one analysis area, image complexity information of the at least one analysis area, classify the at least one analysis area into a class based on the image complexity information, and generate a dimming control signal configured to control a brightness of the at least one analysis area based on the class.