Light Sensing Order Adjusting Mechanism for Distance Calculation Accuracy
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Solution Overview
Problem
Conventional light sensing methods in electronic devices face challenges in accurately adjusting screen brightness due to dynamic changes in ambient light sources and tested objects, leading to inconsistent distance calculations and discomfort during use.
Innovation Solution
A light sensing method with a sensing order adjusting mechanism, where light signals are sensed in different orders across multiple cycles, including first and second reflected light signals, and ambient light signals, allowing for accurate sensing even with changing ambient light sources and tested objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If light sensing operations are performed in a fixed order, then the sensing process is simple and fast, but the distance calculation becomes inaccurate when ambient light sources or tested objects change position
Solution Approach 1:
The patent applies dynamics by making the sensing operation order variable rather than fixed. The control unit dynamically adjusts the sequence of light sensing operations based on detected changes in ambient light conditions or object positions, allowing the system to adapt to changing environments and maintain measurement accuracy.
Solution Approach 2:
The patent changes the parameter of sensing operation order from a constant fixed sequence to a variable sequence that can be adjusted based on environmental conditions. By modifying this operational parameter in response to detected changes, the system maintains accurate distance calculations despite variations in ambient light or object positioning.
2Measurement precision
If multiple sensing operations are performed sequentially, then measurement accuracy improves, but the sensing time increases
Solution Approach 1:
The patent implements periodic action by performing light sensing operations in repeated cycles with different sequences. Each sensing cycle includes multiple light sensing operations targeting different light signals (first light signal, second light signal, ambient light signal), and by periodically varying the order of these operations, the system achieves comprehensive measurement data while maintaining efficient cycle timing.
3Adaptability or versatility
If the sensing order is adjusted dynamically, then adaptability to changing environments improves, but the control complexity increases
Solution Approach 1:
The patent employs feedback by using the results of ambient light sensing and reflected light signal analysis to determine whether changes in environment have occurred. Based on this feedback, the control unit automatically adjusts the sensing operation order for subsequent cycles, creating a closed-loop system that adapts to environmental changes without requiring complex external control mechanisms.
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 method ensures accurate light sensing and distance calculation, maintaining user comfort by dynamically adjusting screen brightness despite changes in ambient light and object positions.
Implementation Method 1
performing a first light sensing operation to sense a first reflected light signal within a first phase time, wherein the first light signal is emitted by both of an ambient light source and a light-emitting component and then is reflected by a tested object to form a first reflected light signal
Data Source
AI summary
A light sensing method having a sensing order adjusting mechanism is provided. The method includes steps of: in a previous sensing cycle, sensing a first light signal that is emitted by both of an ambient light source and a light-emitting component and then is reflected by a tested object; in the previous sensing cycle, sensing a second light signal that is emitted by both of the ambient light source and the light-emitting component and then is reflected by the tested object; in the previous sensing cycle, sensing an ambient light signal emitted by only the ambient light source; and in a next sensing cycle, sensing the first light signal, the second light signal and the ambient light signal in an order different from that in the previous sensing cycle.