Touch Input Interpolation for Vehicle Vibration Signal Correction
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Solution Overview
Problem
Force-based touch pads inaccurately recognize touch inputs due to external factors like vehicle vibrations, leading to distorted signals and erroneous input recognition.
Innovation Solution
An apparatus and method that includes a touch input detector, a vehicle movement detector, and a processor to interpolate distorted signals, connecting first and second touch input signals using signal interpolation when abnormal conditions are detected, such as vehicle acceleration or high frequency component changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If force-based touch pad recognizes touch input directly without interpolation, then response speed is fast, but measurement precision deteriorates due to signal distortion from external factors
Solution Approach 1:
The system performs preliminary detection of abnormal signals caused by external factors (vibrations, acceleration) before final touch input recognition. By detecting these abnormal conditions in advance and applying interpolation only when needed, the system prepares corrective measures proactively rather than reactively, improving accuracy without always incurring the full processing overhead
Solution Approach 2:
The system dynamically changes the processing parameters based on detected conditions. When abnormal signals are detected (indicating external interference), the system switches from direct recognition mode to interpolation mode, adjusting the signal processing approach according to the environmental conditions to optimize both accuracy and efficiency
2Measurement precision
If signal interpolation is performed to correct distorted touch input signals, then measurement precision improves, but loss of time increases due to additional processing
Solution Approach 1:
The system applies interpolation processing selectively and partially - only to the specific portions of the signal where abnormal conditions are detected, rather than processing the entire signal continuously. This partial application of interpolation reduces the overall processing time while still correcting the distorted segments that affect recognition accuracy
Solution Approach 2:
When no abnormal signals are detected, the system skips the interpolation step entirely and proceeds directly to touch input recognition, rushing through the processing pipeline to maintain fast response times. The system only slows down and performs interpolation when necessary, minimizing the time loss to essential cases only
3Adaptability or versatility
If touch pad operates in vehicle environment with vibrations, then adaptability improves for mobile use, but reliability deteriorates due to signal distortion from external factors
Solution Approach 1:
The system introduces an intermediary processing layer (the processor that performs interpolation) between the touch input detector and the recognition logic. This intermediary detects abnormal signals caused by vehicle vibrations and applies corrective interpolation to eliminate distortion, acting as a mediator that protects the recognition system from environmental interference while maintaining vehicle environment compatibility
Solution Approach 2:
The system implements a feedback mechanism where the detected touch input signal is continuously monitored for abnormal conditions, and correction is applied based on this feedback. When vibrations or acceleration are detected, the system adjusts the signal processing in real-time to compensate for distortion, creating a closed-loop system that maintains reliability across varying environmental conditions
Data Source
AI summary
An apparatus for recognizing a touch input includes: a touch input detector detecting a touch input signal depending on a force-based touch input on a touch pad; a vehicle movement detector sensing movement of a vehicle; and a processor configured to detect an abnormal signal generated by the movement of the vehicle in the touch input signal and to recognize the touch input by performing signal interpolation on an abnormal signal generation section in which the abnormal signal is generated.