Display Processing Apparatus Adaptive Brightness Control
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Solution Overview
Problem
Conventional display devices face issues with increased power consumption and glare due to uniform brightness reduction, which degrades picture quality, especially in scenes with dark colors, as they struggle to adaptively control pixel brightness based on image data.
Innovation Solution
A display processing apparatus that calculates a representative brightness value for each pixel and adjusts brightness using a reference curve for brightness adjustment only when the value exceeds a set threshold, applying adaptive current limit to prevent unnecessary brightness reduction, thus maintaining picture quality and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If uniform brightness reduction is applied to reduce power consumption, then power consumption is reduced, but picture quality is degraded
Solution Approach 1:
The patent applies local quality by differentiating brightness adjustment across different image scenes. Instead of uniform brightness reduction, the system calculates representative brightness values for different scenes and applies selective brightness adjustment only to scenes exceeding the threshold, preserving picture quality in dark scenes while reducing power consumption in bright scenes.
Solution Approach 2:
The patent changes the parameter of brightness adjustment from a fixed uniform value to a dynamic scene-dependent value. By introducing threshold-based adaptive brightness control, the system modifies the brightness parameter selectively based on scene characteristics, resolving the contradiction between power saving and picture quality maintenance.
2Object-affected harmful factors
If uniform brightness reduction is applied to prevent glare, then glare phenomenon is prevented, but brightness in unwanted scenes is also reduced
Solution Approach 1:
The patent implements local quality by applying brightness adjustment selectively to specific image scenes rather than uniformly across all scenes. The system identifies bright scenes exceeding the threshold and applies brightness reduction only to those scenes, preventing glare while maintaining normal brightness in dark scenes.
Solution Approach 2:
The patent introduces dynamic brightness control that adapts to different scene conditions. The brightness adjustment is not static but dynamically determined based on the representative brightness value of each scene, allowing the system to respond appropriately to varying display conditions and prevent glare only when necessary.
3Use of energy by moving object
If brightness is uniformly lowered, then power consumption is reduced, but brightness distribution in image scenes becomes unwanted
Solution Approach 1:
The patent changes the brightness parameter from a uniform fixed value to a scene-adaptive dynamic value. By introducing threshold-based selective brightness adjustment, the system modifies brightness parameters only when necessary (in bright scenes), maintaining power efficiency while preserving natural brightness distribution in dark scenes.
Solution Approach 2:
The patent employs feedback by calculating the representative brightness value of each scene and using this information to determine whether brightness adjustment should be applied. This feedback mechanism enables the system to adaptively control brightness based on actual scene conditions, improving both power efficiency and brightness adaptability.
Data Source
AI summary
The present embodiment relates to an apparatus and method for processing image data for driving a display panel, and more particularly, to an apparatus and method for flexibly changing brightness of each pixel based on a representative brightness value of each image.