Adaptive Display Brightness Control for Power and Visibility
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Solution Overview
Problem
Image display devices face challenges in minimizing power consumption while maintaining image visibility, especially under varying external illumination conditions, as existing methods do not effectively compensate for the reduction in power consumption without deteriorating image quality.
Innovation Solution
An image display apparatus and method that includes an external light detection module, a storage module for light emitting unit control values, and a control module to determine the necessary lightness compensation and visibility adjustments based on external illumination intensity, allowing for selective operation modes to ensure image visibility while reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If power consumption is reduced by lowering light emitting unit control values, then energy efficiency improves, but image visibility deteriorates
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the light emitting unit control value based on external illumination intensity detected by a light sensor. When external light is strong, the control value is reduced to save power; when external light is weak, the control value is increased to maintain visibility. This resolves the contradiction by making power consumption adaptive to environmental conditions rather than fixed.
Solution Approach 2:
The system transitions from a static light emitting control approach to a dynamic one where the control module continuously monitors external illumination and adjusts the light emitting unit control value in real-time. This dynamic adjustment ensures that power consumption is minimized only when it does not compromise image visibility, thereby resolving the contradiction between energy efficiency and visibility reliability.
2Loss of energy
If lightness is adjusted according to external illumination intensity, then energy saving improves, but image quality deteriorates due to lack of compensation
Solution Approach 1:
The patent implements feedback by using a light sensor to detect external illumination intensity and feeding this information back to the control module. The control module then adjusts the light emitting unit control value and applies image compensation algorithms to maintain image quality. This feedback loop ensures that energy saving measures do not degrade image quality, as the system continuously adapts to external conditions.
Solution Approach 2:
The system performs preliminary action by pre-calculating and storing multiple light emitting unit control values corresponding to different external illumination intensities. When the light sensor detects a specific illumination level, the control module can quickly switch to the pre-determined control value, avoiding real-time computation delays and ensuring both energy efficiency and image quality are maintained without degradation.
3Reliability
If multiple image properties are compensated simultaneously, then image visibility is maintained, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the image compensation process into separate modules: a light sensor module for detecting external illumination, a control module for determining control values, and a display module for rendering images with applied compensation. This modular segmentation allows each component to perform its specific function independently, maintaining image visibility through coordinated operation while managing overall system complexity through clear functional separation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively minimizes power consumption while maintaining image quality by adjusting lightness and visibility in association with each other, ensuring that image visibility is not compromised due to reduced power consumption, even under changing illumination conditions.
Implementation Method 1
an external light detection module which detects an intensity of external illumination
Data Source
AI summary
An image display apparatus and method are provided. The image display apparatus includes an external light detection module which detects an intensity of external illumination; a storage module which stores a plurality of light emitting unit control values; and a control module which selectively performs, according to a result of a determination, a lightness compensation operation for compensating a lightness of a light emitting unit and a visibility adjustment operation for adjusting the visibility of the original input image. The method includes detecting an intensity of external illumination; determining whether a visibility of an original input image can be ensured according to an input light emitting control value and the detected external illumination intensity; and selectively performing, according to the determination, a lightness compensation operation for compensating a lightness of a light emitting unit and a visibility adjustment operation for adjusting the visibility of the original input image.