Resonant Frequency Selection Region for Wear-Free Device Input
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Solution Overview
Problem
Electronic devices with mechanical buttons or touch-screens face issues such as wear and tear, foreign object damage, and the need for external connections for basic operations, while devices without user interfaces lack the ability to perform functions like on/off or reset without connection.
Innovation Solution
An electronic device with a selection region on its housing featuring concentric geometric shapes that generate distinct resonant frequencies upon tapping, allowing a sensor and processing circuit to select functions based on detected frequencies, eliminating the need for physical buttons or touch inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mechanical buttons are used for user input, then ease of operation is improved, but device complexity and susceptibility to wear and foreign object damage increase
Solution Approach 1:
The patent replaces mechanical buttons with an acoustic sensor system that detects vibrations and resonant frequencies of the device housing. When a user taps on specific regions of the housing, the housing vibrates at characteristic frequencies that the acoustic sensor detects, eliminating the need for mechanical buttons while maintaining input functionality and improving durability.
Solution Approach 2:
The patent introduces the device housing itself as an intermediary element between user input and the control system. The housing serves as both the structural component and the sensing element, where tap locations and patterns generate detectable resonant frequencies that convey user intent without requiring separate input mechanisms.
2Device complexity
If no user interface is provided in the device, then device complexity is reduced, but the ability to perform basic operations without external connections is lost
Solution Approach 1:
The patent makes the device housing multi-functional by using it both as the structural enclosure and as the user interface input mechanism. The same housing that protects internal components also serves as the tap surface for user input, allowing basic operations without adding separate interface elements or requiring external connections.
3Measurement precision
If concentric geometric shapes with different resonant frequencies are used in the selection region, then measurement precision of tap location is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent varies geometric parameters of the concentric shapes (such as radius, spacing, and depth) to create distinct resonant frequency signatures for different selection regions. These parameter variations are designed to produce clearly distinguishable frequency differences that enable accurate tap location detection while remaining feasible with standard manufacturing tolerances.
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
Enables basic operations like power control and navigation without external connections, enhancing durability and user interaction in devices with integrated selection regions, providing a robust and user-friendly interface.
Implementation Method 1
detecting a resonant frequency generated by a tapping on a selection region of a device housing
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
A function of an electronic device is selected by detecting a resonant frequency generated by a tapping on a selection region of a device housing. The function of the device is selected based on the detected resonant frequency.