Backlight Control Using Separate Luminance and Chrominance Reaction Times
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Solution Overview
Problem
Current visual display systems face a conflict in providing both relaxed viewing and immersive experiences due to the slow change in brightness and color information, leading to a mismatch between backlighting effects and image content, resulting in reduced correlation with the scene.
Innovation Solution
The system utilizes separate reaction times for luminance and chrominance information, allowing luminance to change slowly while chrominance responds quickly, by processing these parameters in the YUV color space, ensuring that backlighting colors adapt better to the screen content and maintain a relaxed viewing experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the backlighting system uses slow changing colors and fixed brightness for relaxed viewing, then eye strain is reduced, but the correlation between backlighting and current scene content deteriorates
Solution Approach 1:
The patent segments the backlight control into two independent components: luminance (brightness) and chrominance (color). The luminance component is updated slowly to reduce eye strain, while the chrominance component is updated quickly to maintain correlation with current scene content. This segmentation allows each component to be optimized independently for its specific function.
Solution Approach 2:
The system dynamically adjusts the update rates of different backlight parameters based on their functional requirements. Luminance changes are deliberately slowed down with extended transition times, while chrominance changes maintain fast response to scene content. This dynamic differentiation resolves the contradiction between relaxation and relevance.
2Adaptability or versatility
If the backlighting system extends the screen content with fast color responding, then immersive viewing experience is improved, but the relaxed viewing experience deteriorates due to fast brightness changes
Solution Approach 1:
By separating luminance and chrominance control, the system can provide fast chrominance response for immersive experience while maintaining slow luminance response for eye comfort. This segmentation enables the backlight to simultaneously deliver both fast color changes and slow brightness changes.
Solution Approach 2:
The patent applies different temporal characteristics to different aspects of the backlight: fast response for color (chrominance) to enhance immersion, and slow response for brightness (luminance) to reduce eye strain. Each aspect receives the quality of response appropriate to its function.
3Device complexity
If the backlighting system uses a single integration time constant for both brightness and color, then the system complexity is reduced, but the precision of scene correlation deteriorates
Solution Approach 1:
The patent divides the single integration time constant into two separate parameters: one for luminance and one for chrominance. This segmentation allows each parameter to be independently optimized for its specific requirements, improving scene correlation precision without excessive complexity increase.
Solution Approach 2:
The system changes the temporal parameters of the backlight control by introducing separate integration time constants for luminance and chrominance. This parameter differentiation enables precise control over how each aspect responds to scene content, improving correlation accuracy.
Data Source
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AI summary
A display system providing an enhanced viewing experience is provided. The system enables having backlighting colors fast adapted to the screen content while at the same time also having a relaxed viewing experience because the luminance slowly changes over time. A method and a computer-readable medium are also provided.