Gamma Value Determination Method for Display Panels
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Solution Overview
Problem
Existing methods for determining the gamma value of display panels are time-consuming and inefficient, with low accuracy due to the need for extensive calculations within a predefined range, which can lead to inaccurate results if the gamma value falls outside this range.
Innovation Solution
A method and device that determine the gamma value by obtaining target gray scales within a display panel's gray scale range, calculating local gamma values, and using an approximate value to narrow down the gamma value range, thereby improving efficiency and accuracy by selecting candidate gamma values with minimal gray scale dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the least squares method is used to calculate gamma values by assuming a predefined range (1 to 3) and testing 201 candidate values, then the gamma value can be determined within the assumed range, but the calculation time is excessively long and efficiency is low
Solution Approach 1:
The patent divides the gamma value determination process into two stages: first determining an approximate gamma value using a simplified method, then using this approximate value to guide a more precise calculation. This segmentation reduces the search space from 201 candidate values to a smaller range around the approximate value, significantly reducing calculation time while maintaining accuracy
Solution Approach 2:
The patent performs a preliminary determination of an approximate gamma value before conducting the final precise calculation. This preliminary action establishes a narrowed search range that prevents unnecessary calculations of candidate values far from the actual gamma value, thereby reducing overall computation time
2Productivity
If the least squares method searches for gamma values within a fixed range of 1 to 3, then calculations are confined to this range, but the method fails to accurately determine gamma values that fall outside this range
Solution Approach 1:
The patent makes the search range dynamic by first determining an approximate gamma value and then setting the final search range based on this approximate value rather than using a fixed predefined range. This dynamic approach allows the method to adapt to display panels with gamma values outside the traditional 1 to 3 range, improving both efficiency and accuracy
3Measurement precision
If 201 candidate gamma values are calculated and compared to determine the gamma value, then comprehensive coverage is achieved, but the process is time-consuming and has low efficiency
Solution Approach 1:
The patent changes the parameter of search range size by first determining an approximate gamma value and then limiting the final candidate value search to a smaller range around this approximate value. This parameter change reduces the number of calculations required while maintaining determination accuracy, thereby improving productivity
Data Source
AI summary
The present invention provides a determining method of a gamma value and a device thereof, and a display terminal. The method includes obtaining a plurality of target gray scales from a gray scale range of a display panel; determining a local gamma value of each of the target gray scales of the plurality of the target gray scales; determining an approximate gamma value of the display panel according to the local gamma value of the plurality of the target gray scales; and determining a gamma value of the display panel according to the approximate gamma value.