Mobile Display Brightness Adjustment via Orientation and Light Source
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Solution Overview
Problem
Mobile phones often have inaccurate backlight brightness adjustments due to the limited single front light sensor, which can result in backlight brightness being either too high or too low, failing to accurately adapt to ambient conditions.
Innovation Solution
A method and device that determine the posture and orientation relationship between the mobile terminal's display screen and a light source, using an acceleration sensor and light sensor, to adjust the display brightness accordingly, ensuring it is adapted to ambient brightness by decreasing or increasing brightness based on preset thresholds and adjustment parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single front light sensor is used to detect ambient light, then the device complexity is reduced, but the measurement precision of ambient brightness is deteriorated
Solution Approach 1:
The patent divides the light detection function into multiple segments by using both a front light sensor and a rear light sensor. Each sensor detects light from different directions, and the processing module segments the detection results to determine the orientation relationship with the light source, thereby improving measurement precision without significantly increasing device complexity
Solution Approach 2:
The patent introduces an acceleration sensor as an intermediary to detect the posture of the mobile terminal. This intermediary device helps determine the orientation relationship between the display screen and the light source, which compensates for the limited capability of the single front light sensor and improves overall measurement precision
2Device complexity
If backlight brightness is adjusted based on front light sensor detection, then the adaptation to ambient brightness is simplified, but the accuracy of brightness adjustment is deteriorated
Solution Approach 1:
The patent implements a dynamic brightness adjustment mechanism that adapts to different usage scenarios. The processing module dynamically determines the orientation relationship between the display screen and light source based on sensor data, and dynamically adjusts the backlight brightness accordingly. This dynamic approach improves brightness adjustment accuracy while maintaining a relatively simple overall mechanism
Solution Approach 2:
The patent employs a feedback mechanism where the light sensor continuously detects ambient light intensity and the acceleration sensor monitors device posture. The processing module uses this feedback information to continuously adjust the backlight brightness, ensuring accurate adaptation to ambient conditions while keeping the adjustment mechanism simple
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
This approach allows for more accurate adaptation of display brightness to ambient conditions, reducing inaccuracies and improving the display experience by ensuring the brightness is neither too high nor too low, effectively meeting user requirements.
Implementation Method 1
a posture of the mobile terminal is determined according to data acquired by an acceleration sensor of the mobile terminal
Implementation Method 2
a light sensor of the mobile terminal detects brightness
Data Source
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AI summary
Provided are a brightness adjustment method and device, a mobile terminal and a storage medium. The method is applied to a mobile terminal and includes that: a posture of the mobile terminal is determined; an orientation relationship between a display screen of the mobile terminal and a position of a light source is determined according to the posture and the position of the light source; and display brightness of the display screen is adjusted according to the orientation relationship. Accordingly, the display brightness of the display screen is further adjusted according to the orientation relationship between the display screen of the mobile terminal and the light source, so that the adjusted display brightness is more accurate and may be adapted to light changes better.