Image Data Processing Device Using Representative Brightness for Power Reduction
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Solution Overview
Problem
Conventional display devices face increased power consumption and image quality deterioration due to uniform brightness adjustments, particularly when handling images with varying color content, as they control pixel brightness using analog voltage, leading to glare and reduced image quality.
Innovation Solution
A method and device for processing image data by calculating a representative brightness value and generating a brightness adjustment curve using reference curves, allowing for dynamic pixel brightness adjustment based on the image's content, thereby reducing power consumption and maintaining image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If brightness values included in image data are uniformly lowered, then power consumption is reduced and glare is prevented, but image quality deteriorates
Solution Approach 1:
The patent applies local quality by differentiating brightness adjustment based on image content characteristics. Instead of uniform brightness reduction, the system calculates representative brightness values for different image regions and applies selective gamma correction curves tailored to each region's characteristics. This ensures that dark-colored images maintain their quality while still achieving power consumption reduction in appropriate areas.
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting gamma correction parameters based on the calculated representative brightness value of the input image. The system selects or generates appropriate gamma curves (first gamma curve for darker images, second gamma curve for brighter images) based on the image's overall brightness characteristics, enabling adaptive brightness control that maintains image quality while reducing power consumption.
2Object-affected harmful factors
If brightness values are uniformly reduced to prevent glare, then glare is prevented, but brightness of unintended areas is also reduced causing image quality deterioration
Solution Approach 1:
The patent implements local quality control by applying different gamma correction strategies to different image regions based on their brightness characteristics. The system calculates representative brightness values and applies appropriate gamma curves selectively, ensuring that glare-prone areas are controlled while preserving the quality and brightness of areas where it is needed.
Solution Approach 2:
The patent applies dynamics by making the brightness adjustment adaptive and dynamic rather than static. The system continuously evaluates the representative brightness value of the input image and dynamically selects or generates the most appropriate gamma correction curve, allowing the brightness control to respond to varying image content and prevent glare while maintaining image quality.
Data Source
AI summary
The present disclosure relates to a device and a method for processing image data for driving a display panel. More particularly, it relates to a device and a method to vary the brightness of each pixel according to a representative brightness value of an image.