Portable Terminal Screen Brightness Control for Current Reduction
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Solution Overview
Problem
Portable terminals consume excessive battery power due to high screen brightness, especially during prolonged use of applications like internet browsing, leading to faster battery degradation and reduced user satisfaction.
Innovation Solution
An apparatus and method that dynamically adjust screen brightness based on usage, reducing brightness during data operations and returning to previous levels when operations are completed, thereby minimizing current consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If screen brightness is maintained at high level during data operations, then display quality is improved, but current consumption increases
Solution Approach 1:
The patent implements dynamic screen brightness adjustment by detecting data operation states and automatically changing brightness levels accordingly. The controller monitors whether data operations are occurring and dynamically adjusts the display unit's brightness to be lower during data operations and higher when operations complete, resolving the contradiction between maintaining display quality and reducing energy consumption.
2Use of energy by moving object
If screen brightness is reduced during data operations, then current consumption is reduced, but display visibility deteriorates
Solution Approach 1:
The patent employs periodic adjustment of screen brightness based on the periodic detection of data operation states. The controller continuously monitors operation status and periodically switches between two brightness levels: a first brightness level during data operations and a second brightness level when operations complete. This periodic action ensures energy savings during operations while maintaining adequate visibility when needed.
3Loss of energy
If screen brightness is automatically adjusted, then energy efficiency is improved, but system complexity increases
Solution Approach 1:
The patent implements a self-service control mechanism where the display apparatus autonomously adjusts its own screen brightness based on detected data operation states. The controller within the display apparatus itself performs the detection and adjustment without requiring external control systems, thereby improving energy efficiency while minimizing the increase in overall system complexity by using existing internal components.
Data Source
AI summary
An apparatus and a method for controlling a screen brightness in a portable terminal, by which consumption of current by the portable terminal can be reduced by reducing the brightness of the display while a screen is being loaded for display. The apparatus preferably includes: a display unit for changing a screen brightness value thereof depending on whether data is operated, and displaying a screen thereof having the changed screen brightness value; and a controller for performing a control operation for changing the screen brightness value while the data is operated, and performing a control operation for causing the changed screen brightness value to return to a screen brightness value before the change when the operation of the data is completed.