Touch Sensor Device with User Characteristic-Based Sensitivity Adjustment
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Solution Overview
Problem
Existing touch sensor devices face challenges in accurately detecting user touch operations due to variations in user characteristics, such as age and skin moisture content, leading to erroneous detection and omission of touch events.
Innovation Solution
A touch sensor device that includes a touch sensor, a touch operation detector, an operation determiner, a characteristics detector, and a detection sensitivity adjuster, which adjusts detection sensitivity based on user characteristics to differentiate between valid and invalid operations and optimize touch sensitivity for comfortable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed detection sensitivity is used in the touch sensor device, then the device structure remains simple, but detection accuracy deteriorates due to variations in user characteristics such as age and skin moisture content
Solution Approach 1:
The detection sensitivity is made dynamically adjustable rather than fixed. The sensitivity adjustment unit modifies the detection sensitivity based on detected user characteristics, allowing the system to adapt to different users' skin moisture content, age, and other physiological variations, thereby maintaining high detection accuracy across diverse user populations
Solution Approach 2:
The system changes the detection sensitivity parameter based on user characteristics. By detecting parameters such as skin moisture content and age, the system adjusts the detection sensitivity threshold accordingly, transforming a static parameter into a dynamic one that optimizes detection accuracy for each user's specific characteristics
2Reliability
If the detection sensitivity is increased to capture all touch operations, then detection coverage improves, but erroneous detection of invalid operations increases
Solution Approach 1:
The detection sensitivity parameter is dynamically adjusted based on detected user characteristics such as skin moisture content and age. This allows the system to optimize the balance between detection coverage and erroneous detection by setting appropriate sensitivity thresholds tailored to each user's physiological characteristics, preventing false positives while maintaining reliable detection
Solution Approach 2:
The system automatically adjusts its own detection sensitivity based on detecting user characteristics, without requiring manual calibration or user input. The sensitivity adjustment unit autonomously modifies detection parameters based on the detected physiological attributes, enabling the system to self-optimize for each user's characteristics
3Object-generated harmful factors
If the detection sensitivity is decreased to reduce erroneous detection, then false positive rate decreases, but valid touch operations may be omitted
Solution Approach 1:
The detection sensitivity is dynamically adjusted based on individual user characteristics detected by the characteristics detector. By tailoring the sensitivity parameter to each user's skin moisture content, age, and other physiological attributes, the system achieves optimal detection reliability for that specific user while minimizing erroneous detections, preventing the trade-off between false positives and false negatives
Data Source
AI summary
A touch sensor device includes: a touch sensor; a touch operation detector that detects a touch operation of a user on the touch sensor; an operation determiner that determines whether the touch operation of the user detected by the touch operation detector is a valid operation or an invalid operation based on a predetermined detection sensitivity; a characteristics detector that detects user characteristics which are characteristics of the user; and a detection sensitivity adjuster that adjusts the detection sensitivity in accordance with the user characteristics detected by the characteristics detector.