Screen Wakeup via Cyclic Temperature Sensor Activation
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Solution Overview
Problem
Existing screen waking up methods require all temperature transducers to be activated simultaneously, leading to high power consumption when waking up a terminal from a sleep state.
Innovation Solution
Cyclically activating groups of temperature transducers in a predetermined sequence, with each group activated based on priority, allowing only those sensing human body temperature within a preset range to trigger the screen from an off state to an on state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all temperature transducers are activated simultaneously to ensure reliable temperature sensing, then the reliability of screen wakeup function is improved, but the power consumption increases significantly
Solution Approach 1:
The patent divides the frame into multiple regions (first region, second region, third region, fourth region) and activates temperature transducers in different groups corresponding to these regions at different times. This segmentation allows the system to maintain comprehensive temperature monitoring capability while reducing the number of simultaneously active transducers, thereby resolving the contradiction between reliability and power consumption.
Solution Approach 2:
The patent implements periodic activation of temperature transducer groups. The first group (first and second regions) is activated initially, and if no wakeup is detected, the second group (third and fourth regions) is activated in a subsequent period. This periodic action ensures that all transducers are eventually activated for reliable detection while spreading the power consumption over time rather than requiring all transducers to be simultaneously active.
2Speed
If all temperature transducers are activated at the same time to reduce detection time, then the speed of screen wakeup is improved, but the power consumption increases
Solution Approach 1:
The frame is segmented into multiple regions with corresponding temperature transducer groups. The system activates the first group (first and second regions) immediately for fast initial detection, and only activates the second group (third and fourth regions) if the first group fails to detect wakeup. This segmentation enables the system to achieve fast wakeup speed when needed while avoiding unnecessary power consumption from activating all transducers simultaneously.
Solution Approach 2:
The patent applies partial action by activating only a subset of temperature transducers (the first group in the first and second regions) initially, rather than all transducers. This partial activation is sufficient for most wakeup scenarios, reducing power consumption while maintaining acceptable wakeup speed. The system activates additional transducers (the second group) only when necessary, avoiding excessive power consumption.
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 reduces power consumption by not requiring all transducers to be active at once while maintaining effective screen waking functionality.
Implementation Method 1
a plurality of temperature transducers are arranged in left and right frames of the terminal. All of the plurality of temperature transducers are activated when a screen is in an off state, and when any one of the temperature transducers senses temperature within a preset range of temperature of a human body, the screen of the terminal is switched from the off state to an on state.
Data Source
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AI summary
The embodiments of the present disclosure relate to a method and device for waking up a screen, and belong to the field of application of electronic technologies. The method includes: when a screen is in an off state, at least two groups of temperature transducers are cyclically activated in a predetermined sequence, the at least two groups of temperature transducers being obtained by dividing at least two temperature transducers arranged in a frame of a terminal and each group of temperature transducers including at least one temperature transducer (101); temperature sensing is performed through the activated temperature transducers (102); and when any one of the activated temperature transducers senses temperature within a preset range of temperature of a human body, the screen is triggered to be switched from the off state to an on state (103).