Image Brightness Adjusting Method for Display Flicker Reduction
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Solution Overview
Problem
Monitors experience screen tearing and flicker issues due to unsynchronized frame refresh rates with GPUs, leading to brightness inconsistencies at varying frame rates.
Innovation Solution
An image brightness adjusting method and device that computes or predicts the frame rate of input images, generates brightness curves for different frame rates, and creates a compensating curve to set a consistent brightness, reducing brightness differences and flickering by adjusting image brightness dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the frame rate of the monitor is changed to synchronize with the frame rate of the GPU, then screen tearing problems are solved, but brightness inconsistency and flicker occur due to monitors having higher brightness at high frame rates and lower brightness at low frequencies
Solution Approach 1:
The patent applies parameter changes by adjusting the brightness parameter of the monitor based on the frame rate. The system dynamically modifies the brightness parameter according to the relationship between frame rate and brightness characteristics, compensating for the inherent brightness variations that occur when frame rate changes are made to solve screen tearing.
Solution Approach 2:
The patent implements preliminary anti-action by pre-establishing a mapping relationship between frame rates and corresponding brightness values. Before displaying images at different frame rates, the system proactively adjusts the brightness parameter to counteract the expected brightness variations, thereby preventing flicker and brightness inconsistency before they occur.
2Reliability
If the frame rate continuously changes to synchronize with GPU, then screen tearing is eliminated, but flicker occurs due to brightness variations at different frame rates
Solution Approach 1:
The system dynamically changes the brightness parameter based on the current frame rate. By establishing a mapping relationship between frame rates and optimal brightness values, the system adjusts brightness parameters in real-time to maintain display stability while allowing frame rate changes for screen tearing prevention.
Solution Approach 2:
The patent implements feedback by continuously monitoring the frame rate and using this information to adjust the brightness parameter. The system establishes a closed-loop control where the frame rate serves as feedback input, and the brightness parameter is adjusted accordingly to maintain stable display characteristics and eliminate flicker.
Data Source
AI summary
An image brightness adjusting method, comprising: (a) computing or predicting a first input frame rate according to at least one first input image; (b) generating a first brightness according to a first brightness curve and the first input frame rate, wherein the first brightness curve corresponds to a first frame rate; (c) generating a second brightness according to a second brightness curve and the first input frame rate, wherein the second brightness curve corresponds to a second frame rate; (d) generating a first brightness compensating curve according to the first input frame rate and a brightness difference between the first brightness and the second brightness; and (e) setting a first compensating brightness of at least one second input image according to the first brightness compensating curve.