Liquid Crystal Monitor Brightness Control During Mode Switching
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Solution Overview
Problem
Display devices with automatic and manual brightness adjustment modes experience significant brightness changes when switching from auto to manual mode, causing user discomfort due to abrupt changes in screen brightness.
Innovation Solution
Incorporating a prohibition mechanism that maintains the last-determined brightness value or a corrected value until a new operation is accepted, preventing abrupt adjustments and ensuring a consistent display during mode switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the brightness adjustment mode is forcibly switched from automatic to manual when the operation mode changes, then the manual mode can be activated, but the screen brightness changes significantly causing user discomfort
Solution Approach 1:
The system determines the current screen brightness value before mode switching occurs, and uses this predetermined value to maintain brightness continuity when transitioning from automatic to manual adjustment mode, preventing abrupt brightness changes that would cause user discomfort
Solution Approach 2:
The brightness adjustment section acts as an intermediary that receives the current brightness value from the automatic determination section and maintains it during mode transition, serving as a buffer that prevents direct abrupt changes when switching between automatic and manual adjustment modes
2Adaptability or versatility
If the brightness is adjusted based on the last memory value when switching modes, then the mode can be changed, but the brightness may not be optimal for the current ambient conditions
Solution Approach 1:
The system dynamically adjusts the brightness adjustment behavior based on the operation mode: in automatic mode, the brightness is adjusted according to ambient brightness conditions, while in manual mode, the brightness is maintained at the current value. This dynamic adaptation ensures both mode versatility and brightness optimization for each mode context
Data Source
AI summary
A brightness adjustment section 23 adjusts brightness of the liquid crystal monitor 182 based on a set value determined by an automatic determination section 21a or a set value accepted by an operation section 184. A prohibition section 24 prohibits the brightness adjustment section 23 from adjusting the brightness of the liquid crystal monitor 182 based on the set value determined by the automatic determination section 21a. During a period from a point when the prohibition section 24 prohibits the brightness adjustment that is based on the set value determined by the automatic determination section 21a until the operation section 184 accepts a new operation on the set value, the brightness adjustment section 23 adjusts the brightness of the liquid crystal monitor 182 based on a first set value that is the set value determined by the automatic determination section 21a last before the point of prohibition, or a second set value obtained by correcting the first set value.