Sliding Electronic Device Capacitance Correction
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Solution Overview
Problem
The existing electronic devices with sliding structures face issues in accurately determining the internal capacitance component value and threshold for power back-off operations, leading to unnecessary power reduction or failure to reduce power when necessary, affecting radiation performance and human safety.
Innovation Solution
The electronic device includes a processor that adjusts the internal capacitance component value and threshold based on the state of the slider unit, using data from state detection sensors and grip sensors to correct capacitance values and perform power back-off operations only when necessary, thereby optimizing power management and radiation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed internal capacitance component value is used regardless of slider unit state, then the device structure is simple, but unnecessary power back-off operations occur degrading radiation performance
Solution Approach 1:
The patent applies dynamics by making the internal capacitance component value changeable according to the slider unit's retraction state. The processor dynamically adjusts the capacitance value based on whether the slider is retracted or extended, transforming a static parameter into a dynamic one that adapts to different operational states, thereby preventing unnecessary power back-off operations while maintaining radiation performance.
2Device complexity
If a fixed internal capacitance component value is used, then the control logic is simple, but power back-off operations are not performed when necessary, adversely affecting human body safety
Solution Approach 1:
The processor dynamically adjusts the internal capacitance component value based on the slider unit's state detected by the state detection sensor. When the slider is retracted, a first capacitance value is used; when extended, a second capacitance value is used. This dynamic adjustment ensures appropriate power back-off operations are performed only when necessary, protecting human body safety while avoiding unnecessary control complexity.
3Ease of operation
If the slider unit state is not considered, then the device operation is simple, but the threshold for power back-off is inaccurate, leading to incorrect power management
Solution Approach 1:
The patent applies parameter changes by adjusting the internal capacitance component value parameter according to the slider unit's physical state. The processor changes this parameter based on sensor input, ensuring that the capacitance value matches the actual antenna configuration. This results in accurate power back-off threshold determination while keeping the operational logic straightforward through automatic parameter adaptation.
4Reliability
If dynamic adjustment of capacitance value is implemented, then radiation performance is optimized, but the device complexity increases
Solution Approach 1:
The system applies self-service through automatic capacitance value adjustment. The processor autonomously determines the appropriate capacitance value based on slider unit state detected by integrated sensors, without requiring manual intervention or complex external control mechanisms. This self-adjusting capability optimizes radiation performance while minimizing the added complexity through automated decision-making.
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 solution ensures accurate and timely power back-off operations, preventing unnecessary power reduction and maintaining optimal radiation performance while ensuring human safety by dynamically adjusting capacitance values and thresholds with the slider unit's state.
Implementation Method 1
A capacitance value calculated by using data received from a grip sensor may include an internal capacitance component value intrinsically existing in the electronic device when there is no dielectric substance near the electronic device, and an external capacitance component value resulting from a dielectric substance (for example, human body) near the electronic device.
Implementation Method 2
an operation of recognizing that the state of the slider unit is changed from a first state to a second state in which the slider unit is more retracted into the housing or is more ejected from the housing than in the first state based on data received from the state detection sensor
Data Source
AI summary
A portable electronic device is provided. The portable electronic device includes a housing, a slider unit having an inlet portion configured to retract into the housing, a flexible display, a first antenna, a wireless communication, a state detection sensor, a first grip sensor, a processor, and a memory, processor performs recognizing that the state of the slider unit is changed from first to second state, correcting a capacitance value calculated using the first grip sensor as a correction value using an offset value corresponding to the second state, and a power back-off that lowers the power of a RF signal to be output from the wireless communication circuit to the first antenna using a power back-off value corresponding to the second state when the correction value is equal to or greater than a threshold value corresponding to the second state.