Dual Light Sensor Brightness Control for Blocked Sensor Accuracy
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Solution Overview
Problem
Current mobile devices with single light sensors for automatic brightness adjustment often suffer from inaccurate brightness settings due to sensor blocking, leading to poor display performance and power inefficiency, especially in backlight environments where surrounding light information on one side of the screen is not adequately detected.
Innovation Solution
Implementing a method and apparatus with at least two sensors, one on each side of the display screen, to detect surrounding light information and adjust display parameters based on the maximum or average values of light intensity or color temperature, ensuring accurate brightness and color temperature settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single light sensor is used for automatic brightness adjustment, then the device complexity is reduced, but the measurement precision of surrounding brightness deteriorates when the sensor is blocked
Solution Approach 1:
The patent divides the single sensor function into multiple sensors positioned at different locations (front and back of the device). This segmentation ensures that when one sensor is blocked, another sensor can still accurately detect surrounding brightness, thereby resolving the contradiction between device simplicity and measurement precision.
Solution Approach 2:
The patent transitions from a single-point detection (one sensor) to multi-point detection in three-dimensional space (sensors on both front and back surfaces). This dimensional expansion allows the system to capture brightness information from multiple spatial perspectives, improving measurement precision without significantly increasing device complexity.
2Ease of operation
If the light sensor is blocked during use, then the ease of operation is maintained, but the reliability of brightness adjustment deteriorates
Solution Approach 1:
The patent prepares for potential sensor blocking by pre-installing multiple sensors in different positions. This beforehand cushioning ensures that even if one sensor gets blocked during normal operation, the system still has backup sensors to provide reliable brightness detection, thus maintaining both ease of operation and reliability.
Solution Approach 2:
The system continuously monitors brightness through multiple sensors and uses this feedback to dynamically adjust display parameters. When sensor blocking occurs, the feedback mechanism allows the system to detect abnormal readings and switch to alternative sensor data, ensuring reliable brightness adjustment throughout operation.
3Device complexity
If sensors are installed only on one side of the display screen, then the device complexity is reduced, but the adaptability to different lighting environments deteriorates
Solution Approach 1:
The patent segments the sensor installation from a single-location approach to a multi-location approach, placing sensors on both the front and back of the device. This segmentation enables the system to adapt to various lighting environments (such as backlight scenarios) by selecting appropriate sensor data based on the current environmental context.
Solution Approach 2:
The patent makes the sensor system universal by enabling it to function effectively in diverse lighting conditions through multi-position installation. The same sensor configuration can handle various scenarios including front lighting, back lighting, and ambient light changes, greatly enhancing adaptability without proportionally increasing complexity.
4Use of energy by moving object
If automatic brightness adjustment is implemented, then the power consumption is reduced, but the manufacturing precision of sensor placement deteriorates
Solution Approach 1:
The patent uses multiple sensors positioned at standard locations that are easier to manufacture and assemble. This segmentation approach reduces the need for high-precision single-point sensor placement, as the system can tolerate variations in sensor positions by using data from multiple sensors, thereby reducing manufacturing precision requirements while maintaining power-saving benefits.
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 enhances the accuracy of display adjustments, improves user experience, and achieves better power saving by accurately adapting to surrounding illumination conditions, even when one sensor is blocked.
Implementation Method 1
the mobile devices supporting the display screen to adjust the brightness automatically mostly acquire the surrounding brightness by a light sensor
Data Source
AI summary
An information processing method and an electronic device, the method comprising: acquiring a first value of a first parameter by the first sensor; acquiring a second value of the first parameter by the second sensor; judging whether a difference value between the first value and the second value is larger than or equal to a first threshold or not; determining a third value based on a first algorithm, the first value and the second value, and reporting the third value as a value of the first parameter to the processing unit, when the difference value is larger than or equal to the first threshold; determining a fourth value based on a second algorithm, the first value and the second value, and reporting the fourth value as the value of the first parameter to the processing unit, when the difference value is smaller than the first threshold.