Touch Screen Brightness Control via Ambient Light Thresholds
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Solution Overview
Problem
Conventional devices with touch screens face issues in adjusting screen brightness, as users find adaptive adjustments disturbing and manual adjustments lead to poor visibility due to wide ambient brightness variations.
Innovation Solution
An electrical device with a touch screen that allows users to adjust brightness between a first and second value when ambient brightness is below a threshold, and between the second and a third value when ambient brightness is above the threshold, ensuring reliable visibility and independent control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If adaptive adjustment of screen brightness is implemented, then the screen brightness automatically adapts to ambient brightness changes, but users find the automatic adjustment disturbing and cannot influence the brightness setting
Solution Approach 1:
The patent implements a dynamic brightness adjustment system that automatically switches between adaptive and manual modes based on ambient brightness conditions. The system dynamically adjusts the brightness range available to users: in low ambient light, the full brightness range is available for manual control, while in high ambient light, the system provides adaptive adjustment with a restricted brightness range. This dynamic approach resolves the contradiction by making the system adaptable to environmental conditions while preserving user control within context-appropriate boundaries.
2Ease of operation
If manual adjustment of screen brightness is implemented, then users can independently control brightness, but wide variations in ambient brightness lead to poor visibility of displayed information
Solution Approach 1:
The patent changes the operational parameters of brightness control based on ambient brightness conditions. When ambient brightness is high, the system restricts the minimum brightness value to a third brightness value that ensures visibility, rather than allowing the full range down to the second brightness value. This parameter adjustment ensures that manual user control is maintained while the visibility reliability is preserved by preventing the screen from becoming too dark in bright environmental conditions.
3Ease of operation
If the full brightness range is always available for manual adjustment, then users have complete control, but in high ambient brightness the screen may become too dark to be recognizable
Solution Approach 1:
The patent implements dynamic adjustment of the available brightness range based on ambient light conditions. In high ambient brightness environments, the system dynamically restricts the minimum brightness to a third value that ensures screen recognizability, while in low ambient brightness, the full range down to the second brightness value is available. This dynamic parameter adjustment resolves the contradiction between providing complete user control and ensuring minimum visibility requirements are met.
4Reliability
If adaptive brightness adjustment is used in high ambient light, then visibility is ensured, but users cannot set the brightness below a certain threshold
Solution Approach 1:
The patent changes the brightness parameter range based on ambient brightness conditions. In high ambient light, the system sets the minimum brightness to a third brightness value that ensures visibility, restricting users from setting it lower. In low ambient light, the system changes the parameter to allow the full range down to the second brightness value, providing maximum flexibility. This conditional parameter adjustment resolves the contradiction between ensuring visibility and providing user flexibility.
Data Source
AI summary
The present disclosure relates to a device with a touch screen and a user interface. One object of the present disclosure is to provide a device with a touch screen and a user interface for adjusting the screen brightness, which has an increased ease of use. For this purpose, an electrical device (100) with a touch screen (120) is disclosed which, in a first mode, adjusts the brightness (B) of the screen (120) between a first brightness value (Bmax) and a second brightness value (Bmin1) depending on an input from a user via the touch-sensitive screen (120), and in a second mode, in which the ambient brightness (U) is above the first threshold value (U1), adjusts the brightness (B) of the screen (120) between the first brightness value (Bmax) and a third brightness value (Bmin2) in dependence on an input from a user via the touch screen (120).