Grip Sensing via Current Loop in Metallic Housing
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Solution Overview
Problem
Existing electronic devices face challenges in accurately sensing a user's grip due to interference from various objects and materials, which can lead to incorrect identification and affect wireless communication performance.
Innovation Solution
The use of a first metallic part and a second metallic part with a separator in between, where a clock generator transmits a signal to form a current loop, allowing the processor to sense and differentiate the grip based on signal loss, thereby determining the presence and intensity of a user's grip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a grip sensor senses a change of capacitor capacity, then grip detection is enabled, but accurate recognition of user grip becomes difficult due to interference from various objects and materials
Solution Approach 1:
The patent introduces a metallic part as an intermediary element between the grip sensor and the user's hand. This metallic part forms a current loop with the separator when a user grips the device, enabling detection through electrical signal changes rather than direct capacitive sensing. This intermediary mechanism filters out interference from various objects and materials, as only conductive materials like human skin can complete the current loop effectively.
Solution Approach 2:
The patent replaces the traditional capacitive sensing mechanism with an electrical current loop detection system. Instead of measuring capacitance changes directly, the system uses a clock generator to send signals through metallic parts and detects changes in electrical characteristics when a user grips the device. This substitution of mechanical/electrical system provides more accurate and reliable grip detection.
2Adaptability or versatility
If wireless communication is performed while a user uses the electronic device, then communication functionality is maintained, but electromagnetic wave exposure to the user increases
Solution Approach 1:
The patent implements a feedback mechanism where the grip detection system continuously monitors user presence and provides real-time information to the wireless communication module. Based on this feedback, the system automatically adjusts communication parameters such as power output and frequency selection, reducing electromagnetic wave exposure when a user is detected while maintaining communication functionality.
Solution Approach 2:
The patent makes the wireless communication system dynamic by allowing real-time adjustment of communication parameters based on grip detection results. The system can dynamically change transmission power, switch between different wireless communication modes, or pause transmissions when user presence is detected, thereby adapting to protect the user from excessive electromagnetic exposure while maintaining communication capability when needed.
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 enables accurate grip sensing and discrimination between a user's grip and other objects, allowing for controlled wireless communication and reduced electromagnetic wave exposure.
Implementation Method 1
a current loop formed by a first signal generated by the clock generator through a first metallic part and a second metallic part
Data Source
AI summary
An electronic device according to various embodiments includes: a housing; a plurality of metallic parts forming a portion of the housing; a clock generator disposed in the housing; and a processor is configured to sense a grip on the electronic device based on a current loop formed by a first signal generated by the clock generator and transmitted through a first metallic part and a second metallic part of the plurality of metallic parts, wherein the second metallic part is disposed adjacent to the first metallic part with a first separator disposed between the first metallic part and the second metallic part and configured to electrically separate the first metallic part and the second metallic part.