Mobile Device Shock Touch Protection via Motion Sensor
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Solution Overview
Problem
Users often inadvertently activate mobile devices while moving, leading to unintended touch inputs due to the lack of effective control mechanisms for touch-based devices in dynamic environments.
Innovation Solution
A mobile device equipped with a motion state sensor facility to generate a shock indication signal, allowing the device to switch between operational modes, including a shock touch protection mode that inhibits touch input signals during significant shocks, thereby preventing erroneous activations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If touch control facility is used for user interaction, then ease of operation is improved, but reliability deteriorates due to inadvertent activation during movement
Solution Approach 1:
A motion state sensor facility acts as an intermediary between the physical movement of the device and the touch control facility. The sensor detects shock events and generates indication signals that are processed by a threshold facility, which then controls the mode control facility to switch between normal and shock touch protection modes, thereby mediating the interaction between movement and touch input processing.
Solution Approach 2:
The system performs preliminary detection of shock events through the motion state sensor facility before processing touch input signals. By detecting changes in motion state (third or higher derivatives of position) and comparing them against thresholds in advance, the system proactively switches to protection mode before inadvertent touch inputs can occur, preventing rather than merely responding to errors.
2Reliability
If shock touch protection mode is activated to prevent erroneous inputs, then reliability is improved, but ease of operation deteriorates due to inhibition of valid touch inputs
Solution Approach 1:
The system dynamically adjusts its operational mode based on real-time motion state detection. The mode control facility switches between normal operation mode and shock touch protection mode depending on whether the detected shock magnitude exceeds the threshold. This dynamic adaptation allows the system to be protective when needed while remaining fully responsive during normal use, resolving the contradiction between protection and responsiveness.
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
The solution effectively reduces the occurrence of involuntary touch inputs during movement, enhancing user control and reducing accidental device activation by selectively inhibiting touch input signals based on shock magnitude and direction, ensuring more reliable operation in various contexts.
Implementation Method 1
a motion state sensor facility arranged to generate a shock indication signal indicative for a magnitude of a third or higher derivative of a position of the mobile device
Data Source
AI summary
A mobile device (1) is disclosed comprising a data processing facility (10), a touch control facility (20) arranged to provide a touch input signal (St) to the data processing facility, and a motion state sensor facility (30) arranged to provide a shock indication signal (Sj) indicative for a magnitude of a third or higher derivative of a position of the mobile device. The mobile device further comprises a mode control facility (15) for selecting one of a plurality of mutually different operational modes (M1, M2). The plurality of mutually different operational modes at least comprises a normal operation mode (M1) wherein the touch input signal is used as control signal for controlling operation of the mobile device and a shock touch protection mode (M2), wherein the touch input signal is inhibited.