Adaptive Lamp Brightness Control via Environmental Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices struggle to adjust their light source brightness to levels recognizable by human eyes in varying environmental illumination conditions, leading to either insufficient brightness in low-light environments or excessive energy consumption.
Innovation Solution
A display device comprising a lamp unit, a dimming signal controller, and an inverter device that receives external illumination signals to adjust the lamp brightness using PWM or analog methods, ensuring the brightness is within a range perceivable by humans, thereby optimizing energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the brightness of the display device is increased to match high brightness levels in bright environments, then the image quality is improved, but energy consumption increases unnecessarily in low-light environments
Solution Approach 1:
The patent applies dynamics by making the lamp brightness adjustable and adaptive rather than fixed. The brightness is dynamically changed based on external illumination conditions through the dimming signal controller that receives environmental light signals and adjusts the lamp driving signal accordingly, allowing the system to optimize between brightness and energy consumption in different environments
Solution Approach 2:
The patent changes the brightness parameter of the lamp based on environmental conditions. The dimming signal controller modifies the lamp driving signal's brightness level according to the received external illumination signal, transitioning between different brightness states to match human visual perception requirements while optimizing energy usage
2Use of energy by moving object
If the brightness of the display device is reduced to save energy in low-light environments, then energy consumption is reduced, but the brightness becomes unrecognizable to human eyes
Solution Approach 1:
The patent implements feedback by having the dimming signal controller receive external illumination signals from the environment and use this feedback to adjust the lamp brightness. The controller continuously monitors environmental light conditions and adjusts the lamp driving signal to maintain brightness within the recognizable range for human eyes while optimizing energy consumption based on actual environmental conditions
Solution Approach 2:
The patent changes the brightness parameter dynamically based on environmental feedback. The dimming signal controller adjusts the lamp's brightness level according to the external illumination signal, ensuring the brightness remains within the range recognizable by human eyes while minimizing energy consumption in low-light environments
3Ease of operation
If the lamp brightness is controlled using analog method by changing current strength, then brightness adjustment is achieved, but precise control within human perception range is difficult
Solution Approach 1:
The patent uses feedback to improve brightness control precision. The dimming signal controller receives external illumination signals and adjusts the lamp driving signal based on this feedback, enabling precise control within the human perception range. The feedback mechanism allows the system to adapt to environmental conditions and maintain optimal brightness levels that are recognizable to human eyes
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 adjusts light source brightness to match human perception in different environments, preventing unnecessary energy waste by maintaining brightness within recognizable levels, even in low-light conditions.
Implementation Method 1
A method for controlling brightness of the lamp includes an analog method for changing the strength of current flowing across the lamp and a PWM method for changing an on/off duty ratio for the current flowing across the lamp
Implementation Method 2
analog method for changing the strength of current flowing across the lamp
Data Source
AI summary
A display device includes a lamp unit, a dimming signal controller, and an inverter device. The dimming signal controller receives a lamp brightness signal and an external environment illumination signal, selects the lamp brightness signal or a signal based on the received external environment illumination signal, and outputs the selected signal as a dimming signal. The inverter device may operate to control brightness of the lamp unit based on the dimming signal.