Display Device Image Quality Control Gain Generator
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Solution Overview
Problem
Display devices experience issues with reverse afterimage phenomena such as overshoot, undershoot, and ringing during image quality control, leading to unclear or blurry screens and unintended results from overlapping image quality controls.
Innovation Solution
A display device and control method that includes a communication device, image quality controller, and gain generator to perform image quality controls on input images, specifically calculating gains for each frame to suppress or enhance sharpness and contrast based on a transfer function, and applying these gains to subsequent frames to minimize side effects like overshoot and undershoot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If image quality control is performed on the image signal, then image quality is improved, but reverse afterimage phenomena such as overshoot, undershoot, and ringing occur
Solution Approach 1:
The patent applies preliminary anti-action by calculating a compensation value based on the transfer function before the image quality control is applied. This compensation value is designed to counteract the expected reverse afterimage effects, thereby preventing overshoot, undershoot, and ringing phenomena while maintaining improved image quality.
Solution Approach 2:
The patent employs feedback by using the transfer function to calculate how image quality control affects subsequent frames. This feedback mechanism allows the system to adjust the compensation value dynamically, ensuring that reverse afterimage effects are minimized while preserving the benefits of image quality enhancement.
2Manufacturing precision
If multiple image quality controls are performed on the image signal, then comprehensive image quality improvement is achieved, but results differ from expectations due to overlapping controls
Solution Approach 1:
The patent uses feedback to track the cumulative effect of multiple image quality controls through the transfer function. By calculating how each control affects subsequent frames, the system can adjust compensation values to ensure that the combined effect matches the intended result, preventing unexpected outcomes from overlapping controls.
Solution Approach 2:
The transfer function acts as an intermediary that mediates between multiple image quality controls. It calculates the combined effect of various controls and generates appropriate compensation values, ensuring that the interaction between multiple controls produces the expected result rather than unexpected artifacts.
Data Source
AI summary
Provided is a display device including a communication device for receiving an input image containing a first frame and a second frame, an image quality controller for performing a first image quality control on at least a portion of the first frame, and a gain generator for calculating a gain of the second frame based on the first frame where the first image quality control has been performed, wherein the image quality controller performs a second image quality control applied with the gain for at least a portion of the second frame.