Pixel Display Power Reduction via Localized Color Gamut Transformation
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Solution Overview
Problem
Computing systems face challenges in reducing display power consumption without compromising image quality, especially in pixel lit displays where conventional backlight dimming approaches are not applicable.
Innovation Solution
A method that identifies focused and non-focused regions of an image, transforms color values in the non-focused region from the original color gamut to a power-reduced color gamut, and outputs the remapped image with preserved color gamut in focused regions and reduced power consumption in non-focused regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the display operates at full power to maintain image quality, then image fidelity is preserved, but power consumption increases
Solution Approach 1:
The patent applies different color gamuts to different regions of the display based on their importance. Focused regions (where the user is currently looking or interacting) maintain the full original color gamut for high image fidelity, while non-focused regions use a reduced power color gamut that consumes less power. This spatial differentiation of quality levels resolves the contradiction by preserving image fidelity only where necessary while reducing power consumption in less critical areas.
Solution Approach 2:
The display screen is divided into multiple regions with different power settings. The system identifies focused regions (containing active content or user attention) and non-focused regions (background or inactive content), then applies separate color gamut transformations to each segment. This segmentation allows the display to optimize power consumption globally while maintaining local image quality in important areas.
2Duration of action of moving object
If power consumption is reduced across the entire display, then battery life is extended, but visual performance deteriorates
Solution Approach 1:
Instead of uniformly reducing power across the entire display, the patent implements local quality differentiation by applying power reduction only to non-focused regions while maintaining full power in focused regions. This ensures that visual performance is preserved where the user needs it most, while still achieving overall power savings to extend battery life.
Solution Approach 2:
The display dynamically adjusts the color gamut and power consumption levels based on real-time identification of focused and non-focused regions. As the user's attention or interaction moves across the screen, the system dynamically reconfigures which regions receive full power and which receive reduced power, ensuring visual performance is always maintained in the currently relevant areas while optimizing overall power consumption.
3Use of energy by moving object
If conventional backlight dimming is applied to pixel lit displays, then power consumption decreases, but image quality is compromised
Solution Approach 1:
The patent replaces global backlight dimming with a local quality approach specific to pixel lit displays. Instead of uniformly dimming all pixels, the system selectively applies color gamut reduction only to non-focused regions while maintaining full color quality in focused regions. This resolves the contradiction by achieving power savings without the blanket image quality degradation that results from conventional backlight dimming.
Solution Approach 2:
The patent changes the color gamut parameter selectively across different regions of the display. In non-focused regions, the color gamut is transformed to a reduced power color gamut, while in focused regions, the original color gamut is maintained. This parameter differentiation allows the system to reduce power consumption in less critical areas while preserving image quality in important areas, avoiding the trade-off imposed by uniform backlight dimming.
Data Source
AI summary
A method, of operating a display of a computing system, includes: identifying a focused region and a non-focused region of an original image; transforming color values of pixels in the non-focused region from a full color gamut of the display to a power reduced color gamut; generating a remapped image by remapping the non-focused region of the original image with the transformed color values; and outputting the remapped image on the display with the full color gamut in the focused region and the power reduced color gamut in the non-focused region.