Signal Generation Apparatus Brightness Control for Display Burn-In
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Solution Overview
Problem
Existing image display technologies face challenges in enhancing image realism while minimizing the risk of image burn-in and power consumption-related issues due to limited brightness range and increased power consumption.
Innovation Solution
A signal generation apparatus and method that dynamically adjusts the brightness of pixels in a display area by generating an output video signal with a higher gain value during transitions from low-brightness to high-brightness, using a video signal sum calculation and level control mechanism to optimize brightness and reduce burn-in.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the upper limit of brightness value is increased to improve image realism, then image quality is improved, but power consumption increases and image burn-in occurs
Solution Approach 1:
The patent applies periodic action by temporarily increasing brightness during specific time periods when content changes occur, rather than maintaining high brightness continuously. The control section detects transitions between different content types (e.g., from static to dynamic content) and applies high brightness only during these transition periods, thereby improving image realism when needed while avoiding continuous power consumption and burn-in issues.
2Illumination intensity
If the upper limit of brightness value is increased to improve image realism, then image quality is improved, but image burn-in occurs
Solution Approach 1:
The system employs periodic action by applying high brightness values only during specific time periods when content transitions are detected, rather than maintaining elevated brightness continuously. The control section monitors content changes and temporarily increases brightness upper limits during these transitions, thereby achieving improved image realism when needed while minimizing the cumulative exposure that causes image burn-in.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the brightness value parameter based on content characteristics. The control section modifies the upper limit of brightness values in response to detected content changes, switching between different brightness parameter settings to optimize both image quality and display element protection.
Data Source
AI summary
There is provided a signal generation apparatus for generating an output video signal based on an input video signal provided corresponding to an image to be displayed, the output video signal being a signal for driving an image display section including a display area, the display area including a plurality of pixels arranged in a two-dimensional matrix. At a change of the input video signal from low-brightness display to high-brightness display for a portion of the display area including one or more of the pixels, during a period for the signal change, the output video signal being generated for each of the one or more of the pixels in the portion of the display area to obtain a higher brightness than usual for the portion of the display area.