Static Pattern Detection and Brightness Adjustment for Display Panels
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Solution Overview
Problem
Static patterns in videos can cause burn marks on OLED displays and permanent damage to other display technologies due to their fixed nature, leading to negative impacts on display panels.
Innovation Solution
A method is introduced to process static patterns in images by dividing frames into areas, calculating a static pattern index using various algorithms, and adjusting brightness values to prevent damage, involving a circuit system that includes an image processing circuit and display control circuit to output adjusted image data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If static patterns are displayed at a fixed location on the display panel, then the display can show advertisements, logos or fixed images, but burn marks may occur on OLED displays and permanent damage may occur on other display technologies
Solution Approach 1:
The patent applies preliminary action by detecting static patterns in advance before they cause damage to the display panel. The image processing circuit identifies regions with static patterns and adjusts their brightness or applies other processing in advance, preventing burn marks and permanent damage before they occur.
Solution Approach 2:
The patent applies preliminary anti-action by taking countermeasures against the harmful effects of static patterns before they manifest as damage. The system proactively processes static pattern regions through brightness adjustment or other methods to counteract the potential burn marks and permanent damage that would otherwise occur from prolonged static image display.
2Reliability
If the brightness of each region is adjusted to prevent static pattern damage, then display panel durability is improved, but the image quality and visual consistency may deteriorate
Solution Approach 1:
The patent applies local quality by adjusting the brightness or processing only the specific regions containing static patterns rather than the entire image. The image processing circuit identifies static pattern regions and applies selective processing to those areas, maintaining overall image quality while protecting the display panel from damage.
Data Source
AI summary
A method for processing a static pattern in an image and a circuit system are provided. In the method, each of frames of a video is divided into multiple areas. Several algorithms are used to calculate a static pattern index of every area. The static pattern index is used as a reference for determining if the area covers part or entire of a static pattern. An index threshold can be used to check the areas that are determined as the static pattern initially. A time threshold is then used to confirm the areas with the static pattern in every frame. Image data of the areas which are determined as the static patterns can then be adjusted, such as having brightness of the area that is determined as part or entire of the static patterns decreased, for preventing the display panel from negative effects of the static pattern.