Display Color Saturation Regulation via Gamma Ramp Curvature
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Solution Overview
Problem
Conventional color compensation techniques fail to fully achieve color enrichment in display devices due to neglecting the color characteristics of the display device itself, leading to increased hardware costs and CPU calculation burdens, and can result in image delays or flickering.
Innovation Solution
A method and module for regulating saturation by adjusting the curvature of a specific function using saturation parameters, translation, and scaling parameters to calculate a color output signal, considering the color characteristics of the display device, thereby improving color gamut range and reducing hardware and CPU burdens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If an extra hardware device (color enrichment chip or color corrector) is used to improve color hue, then color performance is improved, but hardware cost is increased
Solution Approach 1:
The patent replaces the mechanical hardware-based color enrichment chip with a software-based color correction method that uses mathematical functions (gamma ramps) to adjust color saturation. This substitution eliminates the need for additional hardware components while achieving the same color enhancement effect through computational processing in the display card or display chip.
Solution Approach 2:
The patent changes the saturation parameter of the display device by adjusting the curvature of gamma ramp functions. By modifying the saturation parameter and recalculating the corresponding gamma ramp values, the system achieves color enrichment without adding hardware, instead changing the operational parameters of existing components.
2Manufacturing precision
If CPU is used to execute color enrichment software, then color performance is improved, but calculation burden of CPU is increased
Solution Approach 1:
The patent extracts the color enrichment function from the CPU and relocates it to the display card or display chip. By implementing the saturation regulation and gamma ramp calculation directly in the display hardware, the system eliminates the need for CPU intervention in color correction operations, thereby reducing CPU calculation burden and energy consumption.
Solution Approach 2:
The display card or display chip performs color enrichment operations autonomously using its own internal resources. The system uses the display device's built-in capabilities to regulate saturation and generate corrected video signals without requiring external CPU processing, enabling self-service color correction.
3Ease of operation
If conventional color enrichment technique is used without considering display device color characteristics, then processing is simplified, but color enrichment effect is not fully achieved
Solution Approach 1:
The patent applies local quality by tailoring the color correction process to the specific characteristics of each display device. By measuring or obtaining the display device's color gamut range and using it to determine appropriate saturation parameters and gamma ramp values, the system optimizes color enrichment for the particular display hardware rather than applying a generic correction algorithm.
4Manufacturing precision
If gamma ramps are recalculated when user regulates image parameters, then color accuracy is improved, but image delay or flickering occurs due to slow calculation speed
Solution Approach 1:
The patent performs preliminary action by pre-calculating and storing multiple sets of gamma ramp values corresponding to different saturation parameters. When the user adjusts image parameters, the system can quickly switch between pre-computed gamma ramps or perform minimal interpolation rather than recalculating from scratch, significantly reducing calculation time and preventing image delay or flickering.
Data Source
AI summary
The invention relates to a method and module for regulating saturation degree. In this method, a curvature of a special function in all position is regulated by a saturation parameter to obtain a regulated function. A color input signal is assigned as an independent variable of the regulated function to calculate a color output signal corresponding to the color input signal.