Touch Surface Shock Wave Tap Sensing for Command Input
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Solution Overview
Problem
Existing electronic devices face practical limitations and malfunctions in inputting commands, necessitating an improved method for effectively receiving and processing user inputs on touch surfaces.
Innovation Solution
An electronic device with a touch surface that generates shock waves upon multiple taps, utilizing a tap sensing unit to create a moire signal, which is then processed to generate a string code for controlling the device, allowing for varied and reliable command inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional touch input methods are used, then the device structure is simple, but the command input variety is limited and causes malfunctions
Solution Approach 1:
The patent segments the touch input into multiple tap events within a time window, where each tap generates a shock wave signal. By dividing the input sequence into discrete tap units and analyzing their patterns (single tap, double tap, triple tap), the system achieves varied command inputs without requiring a completely complex new interface paradigm.
Solution Approach 2:
The patent utilizes periodic tapping patterns as the basis for command differentiation. By counting the number of taps within a predetermined time window and analyzing the temporal periodicity of the shock wave signals, the system translates repeated periodic actions into distinct control commands, enabling versatile input without proportional increases in device complexity.
2Adaptability or versatility
If multiple tap sequences are recognized, then command variety increases, but the risk of misinterpretation and malfunction increases
Solution Approach 1:
The patent implements feedback mechanisms through time window validation and shock wave signal verification. The system continuously monitors the time interval between taps against predetermined thresholds and verifies the shock wave characteristics to confirm valid input sequences. This feedback loop filters out erroneous inputs and ensures accurate command recognition, maintaining reliability while expanding command variety.
Solution Approach 2:
The patent changes the parameters of shock wave signal analysis to differentiate between valid tap sequences and noise. By adjusting detection parameters such as time window duration, shock wave amplitude thresholds, and inter-tap interval ranges, the system optimizes its ability to accurately distinguish between intended commands and spurious signals, thereby maintaining high reliability with multiple command types.
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 reduces device malfunctions and increases the variety of commands, making the input process more practical and convenient by accurately interpreting multiple tap sequences into control commands.
Implementation Method 1
when the touch surface is tapped more than one time in a predetermined interval, shock waves are generated
Implementation Method 2
The tap sensing unit receives the shock waves to generate a moire signal
Data Source
AI summary
An electronic device is provided, including a housing, at least one tap sensing unit and a processing unit. The housing has a touch surface, in which, when the touch surface is tapped more than one time in a predetermined interval, shock waves are generated. The tap sensing unit receives the shock waves to generate a moire signal. The processing unit obtains a shock wave source number of each of the shock waves according to the moire signal, and generates a string code according to a generation order of the shock waves and the shock wave source number of each of the shock waves, such that the processing unit controls the electronic device according to a control command corresponding to the string code.