Smartwatch Light Sensor Polling for Power Reduction
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Solution Overview
Problem
Smartwatches consume excessive power due to constantly lit screens, shortening their standby time, as the display is a high power-consuming component and is often kept on for aesthetic purposes.
Innovation Solution
A terminal management method that determines whether the smartwatch is blocked by clothes by measuring light intensity variations, adjusting polling intervals, and executing power management policies to close or start programs based on ambient light thresholds, thereby reducing power consumption and extending standby time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display screen is kept constantly lit up for aesthetic purposes, then the visual appearance is improved, but the power consumption increases and standby time is shortened
Solution Approach 1:
The patent implements periodic light intensity detection at different polling intervals instead of continuous monitoring. The system alternates between first polling interval (when not blocked) and second polling interval (when blocked), creating a periodic detection pattern that reduces power consumption while maintaining aesthetic display functionality.
Solution Approach 2:
The patent dynamically adjusts the polling interval based on the blocked state detection. When the terminal is detected as blocked, the system switches to a longer second polling interval; when unblocked, it uses a shorter first polling interval. This dynamic adaptation optimizes power consumption while maintaining display quality.
2Illumination intensity
If the display screen is kept constantly lit up, then the visual appearance is improved, but the standby time is greatly shortened
Solution Approach 1:
The system employs periodic detection with variable intervals to maintain display illumination while extending standby time. By detecting blocked states periodically and adjusting polling frequency, the system reduces unnecessary power consumption during periods when the terminal is obscured, thereby extending overall standby duration.
Solution Approach 2:
The patent changes the detection parameter (polling interval) based on the terminal state. When blocked, the system transitions to a longer polling interval, effectively reducing the frequency of detection operations and power consumption, thus extending standby time while maintaining display functionality.
3Measurement precision
If frequent light intensity detection is performed to accurately determine blocked state, then the detection accuracy is improved, but the energy consumption increases
Solution Approach 1:
The patent dynamically adjusts the detection frequency based on the current state. When the terminal is in a blocked state, the system uses a longer polling interval, reducing energy consumption. When unblocked, it uses a shorter interval for more frequent monitoring, thus adapting measurement precision to actual needs and optimizing energy usage.
Solution Approach 2:
The system implements periodic light intensity detection with two different intervals. The first polling interval is used when not blocked, and the second (longer) polling interval is used when blocked. This periodic action with variable periods maintains detection accuracy when needed while reducing energy consumption during blocked periods.
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 effectively reduces power consumption and increases the standby time of smartwatches by determining their blocked or unblocked state through light intensity variations, optimizing power usage and user experience.
Implementation Method 1
a light sensor configured to obtain ambient light intensity
Data Source
AI summary
A terminal management method and an apparatus, where the method includes that a terminal obtains a first light intensity at a first moment and a second light intensity at a second moment according to a first interval period. The second moment is later than the first moment. When a difference between the first light intensity and the second light intensity is greater than a first threshold, and the second light intensity is less than a second threshold, the terminal closes a target program.