Wireless Device Charging Current Adjustment During Calls
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Solution Overview
Problem
Wireless devices face challenges in maintaining effective communication and charging during non-contact charging, as the induced electromotive force generated by magnetic flux from an external coil can reduce the charging current, affecting the reception level and sensitivity of wireless communication signals.
Innovation Solution
The wireless device includes a first coil to generate an induced electromotive force by linking with magnetic flux from an external second coil, a battery for charging, and a wireless communication unit to communicate with a call partner, while displaying charging information on the display, including the reduction in charging current during calls, and adjusting the charging current and transmission level to optimize communication and charging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If non-contact charging is performed using induced electromotive force from an external coil, then charging function is enabled, but charging current is reduced affecting communication quality
Solution Approach 1:
The patent dynamically adjusts the transmission level of wireless communication signals based on the charging state. When non-contact charging is detected, the system modifies transmission parameters to compensate for the reduced charging current, ensuring both charging and communication functions operate effectively simultaneously
Solution Approach 2:
The system changes operational parameters by detecting the charging state and adjusting transmission level accordingly. This parameter modification allows the device to maintain communication quality while performing non-contact charging, resolving the conflict between charging current reduction and communication reliability
2Productivity
If charging current is increased to improve charging speed, then charging efficiency is improved, but reception sensitivity of wireless communication deteriorates
Solution Approach 1:
The patent implements dynamic control by switching between different transmission levels based on charging state. When high charging current is detected, the system adjusts transmission parameters to compensate for the negative impact on reception sensitivity, enabling fast charging without sacrificing communication performance
Solution Approach 2:
The system modifies transmission level parameters in response to charging current variations. By detecting the charging state and adjusting transmission parameters accordingly, the device maintains optimal reception sensitivity even when charging current is increased for faster charging
3Reliability
If transmission level is increased to improve communication quality, then communication reliability is improved, but power consumption increases affecting charging efficiency
Solution Approach 1:
The patent optimizes power usage by adjusting transmission level parameters based on charging state detection. When non-contact charging is active, the system modifies transmission parameters to achieve necessary communication reliability while minimizing power consumption that would otherwise interfere with charging efficiency
Solution Approach 2:
The system dynamically adjusts transmission power based on real-time detection of charging state. This dynamic control ensures communication reliability is maintained at the minimum necessary power level, preventing excessive power consumption from undermining the charging process
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 enables wireless devices to maintain communication quality and efficient charging during calls by dynamically adjusting the charging current and transmission level, ensuring proper reception sensitivity and charging performance even during non-contact charging.
Implementation Method 1
The first coil is configured to generate an induced electromotive force by linking with magnetic flux from an external second coil
Data Source
AI summary
A wireless device and a display control method in a wireless device are disclosed. The wireless device is capable of making a call to another wireless device of a call partner and includes a first coil configured to generate an induced electromotive force by linking with magnetic flux from an external second coil, a battery configured to be supplied and charged with a charging current by the induced electromotive force, a wireless communication unit configured to wirelessly communicate with the wireless device of the call partner, a display, and at least one processor configured to communicate with the wireless device of the call partner via the wireless communication unit to perform call-related processing, and when a call is made during charging using the induced electromotive force, display charging information on the display The charging information includes information regarding a reduction in the charging current during the call.