Gamma Circuit Adjustment via Pre-calculated Voltage-Brightness Mapping
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Solution Overview
Problem
Current gamma correction methods are cumbersome, time-consuming, and have low accuracy due to the need for repeated adjustments and testing of voltages at tie points, with interpolation used for other grayscales, leading to inefficiencies and inaccuracies in color correction.
Innovation Solution
A method and device for a gamma circuit that determines the brightness and color coordinates of white light corresponding to voltage values of sub-pixels, establishing a correspondence relationship between brightness and voltage values, allowing direct adjustment to target voltage values for each grayscale, thereby simplifying the debugging process and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If repeated adjustments and testing of voltages at tie points are performed, then color correction can be achieved, but the process becomes cumbersome and time-consuming
Solution Approach 1:
The patent pre-calculates and stores the correspondence relationships between brightness, color coordinates, and voltage values before actual gamma correction is needed. This preliminary preparation eliminates the need for repeated adjustments and testing during the debugging phase, significantly reducing time loss while maintaining color correction accuracy.
Solution Approach 2:
The patent creates a computational model that copies and simulates the complex relationship between multiple parameters (brightness, color coordinates, voltage values). By using this pre-established model, the system can directly determine target voltage values without performing repeated physical adjustments and measurements, thus solving the contradiction between accuracy and time consumption.
2Ease of operation
If interpolation is used for other grayscales, then the process is simplified, but accuracy is reduced
Solution Approach 1:
The patent creates a comprehensive correspondence model that captures the exact relationships between brightness, color coordinates, and voltage values across all grayscales. This model serves as a precise reference that eliminates the need for interpolation, allowing direct lookup of accurate voltage values while maintaining process simplicity through automated calculation.
Solution Approach 2:
The patent transforms the problem from one requiring interpolation between discrete tie points to a direct parameter lookup problem. By pre-calculating and storing the complete correspondence relationships for all relevant parameters, the system achieves both ease of operation (direct lookup) and high precision (exact values without approximation).
3Manufacturing precision
If gamma correction is performed through repeated adjustments, then color errors can be corrected, but the debugging process becomes complex
Solution Approach 1:
The patent creates a pre-calculated correspondence model that encapsulates all the complex relationships between brightness, color coordinates, and voltage values. This model replaces the complex iterative adjustment process with a simple lookup operation, maintaining color error correction capability while dramatically simplifying the debugging process.
Solution Approach 2:
The patent performs all necessary calculations and establishes all correspondence relationships in advance, before the actual gamma correction is needed. This preliminary action eliminates the need for complex repeated adjustments during debugging, reducing process complexity while maintaining correction precision.
Data Source
AI summary
The present disclosure relates to an adjustment method and device for a gamma circuit. In the gamma correction of the present disclosure, the brightness of the sub-pixel of each color in the white light is determined according to the brightness and color coordinates of the white light and the color coordinates of the sub-pixel of each color, the correspondence relationship between the brightness of the sub-pixel of each color in the white light and the voltage values of the sub-pixel is established, the target value of the voltage of the sub-pixel of each color is found from the correspondence relationship according to the brightness of the sub-pixel of each color in the white light corresponding to any grayscale, and then the voltages of red, green and blue sub-pixels are adjusted to the target values.