Back Light Module Intensity Control via Feedback Monitoring
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Solution Overview
Problem
Back light modules in mobile devices waste energy by rapidly increasing and maintaining light intensity above a preset value, leading to pixel saturation and increased battery drain due to frequent activation and deactivation.
Innovation Solution
A system comprising an obtaining unit, detection unit, and control unit that monitors and reduces the light intensity of the back light module when it exceeds a preset value, with periodic detection and recording to compute an average time period for intensity adjustment, thereby conserving energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the back light module increases light intensity rapidly above a preset value, then the display brightness is improved, but energy consumption increases and pixels become saturated
Solution Approach 1:
The patent implements a feedback control mechanism where the controller continuously monitors the light intensity output by the back light module and dynamically adjusts it. When the detected intensity exceeds the preset value, the controller reduces the intensity back to the preset level, preventing energy waste and pixel saturation while maintaining adequate display brightness.
Solution Approach 2:
The system dynamically adjusts the back light intensity based on real-time detection rather than maintaining a fixed high intensity. The controller modifies the light intensity parameter adaptively, transitioning from a static high-intensity state to a dynamic controlled state that responds to actual display needs, thereby reducing energy consumption.
2Speed
If the back light module is activated and deactivated frequently, then the display responsiveness is improved, but energy consumption increases
Solution Approach 1:
The patent maintains continuous monitoring and control of the back light module once activated, avoiding frequent on-off cycles. The controller keeps the back light in a continuously adjusted state where intensity is dynamically regulated above the preset value only when necessary, reducing the number of activation/deactivation events and associated energy losses.
3Illumination intensity
If the back light module maintains high light intensity, then the display visibility is improved, but pixel saturation occurs
Solution Approach 1:
The feedback control mechanism detects when light intensity approaches or exceeds the preset value and automatically reduces it, preventing pixel saturation. This continuous monitoring and adjustment ensures the back light intensity remains within a safe operating range that maintains visibility without causing damage to display pixels.
Data Source
AI summary
A system for monitoring a back light module is provided. The system includes an obtaining unit configured to obtain an intensity of output light from the back light module, a detection unit configured to detect whether the intensity of the output light from the back light module is greater than a preset value, and a control unit configured to control the back light module to reduce the intensity of the output light in response to detecting that the intensity of the output light is greater than the preset value, such that the reduced intensity of the output light is equal to or greater than the preset value.