Grip Sensor Power Control for Extendable Flexible Displays
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Solution Overview
Problem
Transformable portable electronic devices face challenges in controlling electromagnetic wave absorption rates due to varying shapes, and existing methods fail to account for user interaction and deformation, leading to potential health risks and antenna performance degradation.
Innovation Solution
An electronic device with a slidable housing, flexible display, and grip sensor that uses capacitance measurements to determine the device's state and adjust transmission power based on user interaction, ensuring appropriate electromagnetic wave absorption rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission power is controlled based on fixed shape assumptions, then electromagnetic wave absorption rate can be managed, but the control becomes inaccurate for transformable devices with varying shapes
Solution Approach 1:
The patent applies the dynamics principle by making the transmission power control adaptive to changing device shapes. The processor dynamically determines the device state (first state when display is extended, second state when display is not extended) and adjusts transmission power accordingly. This resolves the contradiction by transitioning from static power control to dynamic power control that adapts to transformable device configurations.
Solution Approach 2:
The patent changes the control parameter from fixed transmission power levels to variable transmission power levels based on device state. By introducing state-dependent power control (first transmission power for extended state, second transmission power for non-extended state), the system achieves both accuracy and adaptability in managing electromagnetic wave absorption rates.
2Ease of operation
If transmission power is controlled without considering device deformation, then control simplicity is maintained, but electromagnetic wave absorption rate cannot reflect actual usage situation
Solution Approach 1:
The patent implements feedback by using the grip sensor to detect device state and feeding this information back to the processor. The processor then adjusts transmission power based on this feedback about whether the display is extended or not. This feedback mechanism maintains operational simplicity while significantly improving the accuracy of electromagnetic wave absorption control.
3Device complexity
If grip sensor measurement is used without considering display extension state, then measurement simplicity is maintained, but health risk assessment becomes inaccurate
Solution Approach 1:
The patent segments the measurement system into two independent detection pathways: one for grip sensor measurement and another for display extension state detection. The processor then integrates these separate measurements to determine appropriate transmission power. This segmentation maintains measurement simplicity while improving health risk assessment accuracy by considering both grip state and display configuration.
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 electromagnetic wave absorption rates to suit the device's usage state, minimizing health risks and maintaining antenna performance by dynamically controlling transmission power based on the device's configuration and user interaction.
Implementation Method 1
recognize, based on a capacitance measurement value associated with the slidable housing satisfying a first range
Data Source
AI summary
An electronic device according to various embodiments comprises: a slidable housing including a first housing and a second housing; a flexible display visible to the outside of the electronic device via at least a part of the slidable housing; a wireless communication circuit; a grip sensor; and at least one processor electrically connected to the flexible display, the wireless communication circuit, and the grip sensor, wherein the at least one processor is configured to: recognize that the slidable housing is in a first state and sets, to a first parameter corresponding to the first state, a parameter related to the proximity of a human body if a capacitance measurement value associated with the slidable housing satisfies a first range, and recognizes that the slidable housing is in a second state different from the first state and sets the parameter to a second parameter corresponding to the second state if the capacitance measurement value associated with the slidable housing satisfies a second range different from the first range, and the wireless communication circuit can control transmission power based on the result of comparison between a value measured by the grip sensor and the first parameter or the second parameter.