Color-Specific Video Luminance Adjustment via Color Flags
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Solution Overview
Problem
Conventional luminance adjustment devices only provide overall luminance adjustment, limiting users' ability to customize the luminance of specific colors in displays, resulting in unsatisfactory performance.
Innovation Solution
A device and method that include a color flag generating module, a luminance adjustment value calculating module, and a luminance output module to independently adjust the luminance of appointed colors by transforming color signals into flags, calculating adjustment values, and applying them to luminance input signals, using a reduced memory look-up table and interpolation circuits to optimize efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional luminance adjustment devices are used, then overall luminance adjustment is provided, but luminance adjustment for specific appointed colors is not available
Solution Approach 1:
The patent segments the luminance adjustment function by color, transforming color signals into color flags (red, green, blue, cyan, magenta, yellow) and providing independent luminance adjustment for each color. This segmentation enables users to customize luminance for specific colors rather than adjusting overall luminance only, directly resolving the contradiction between adaptability and ease of operation.
2Adaptability or versatility
If color-specific luminance adjustment is implemented, then user customization options are enhanced, but device complexity increases
Solution Approach 1:
The patent introduces color flags as intermediary elements that represent different color components. These color flags serve as mediators between the input color signals and the luminance adjustment mechanism, simplifying the control structure while enabling color-specific adjustment. The lookup table uses these color flags to determine appropriate luminance adjustment values, reducing the overall system complexity despite the enhanced functionality.
Solution Approach 2:
The patent adds a color dimension to the luminance adjustment system by introducing color flags as an additional control dimension. Instead of single-dimensional overall luminance control, the system now operates in multiple dimensions (different colors), each with its own luminance adjustment capability. This dimensional expansion enables color-specific adjustment without proportionally increasing structural complexity.
3Measurement precision
If full-color luminance adjustment is implemented, then precise color control is achieved, but memory requirements increase
Solution Approach 1:
The patent implements partial action by using a reduced lookup table that stores luminance adjustment values for only the six primary and secondary colors (red, green, blue, cyan, magenta, yellow) rather than storing values for all possible color combinations. This partial storage approach achieves sufficient precision for color-specific luminance adjustment while significantly reducing memory requirements compared to storing complete color space data.
Solution Approach 2:
The patent changes the parameter representation by using color flags (discrete color identifiers) instead of continuous color values for lookup table indexing. This parameter transformation enables precise luminance control for appointed colors while using minimal memory, as the lookup table only needs to store adjustment values for the six flag colors rather than continuous color space data.
Data Source
AI summary
A device and a method for adjusting video luminance of at least a color in a display wherein the color is appointed by the user. The device comprises: a color flag generating module for transforming a plurality of color signals into a plurality of color flags; a luminance adjustment value calculating module for calculating a luminance adjustment output value according to a plurality of luminance adjustment input values of different colors and the plurality of color flags; and a luminance output module for applying the luminance adjustment output value to a luminance input signal so as to generate a luminance output signal. Using the device and the method according to the present invention, the user can respectively adjust the luminance of different colors.