Touch Panel Input Device Bare Hand Gloved Hand Mode Switching
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Solution Overview
Problem
Existing touch switch technologies require complex operations to differentiate between bare hand and gloved hand manipulations on touch panels, leading to increased resource load and potential erroneous input acceptance.
Innovation Solution
An input device with a touch panel that detects proximity or contact, extracts z-coordinate information, and determines contact threshold values based on initial manipulation coordinates to switch between bare hand and gloved hand modes simply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the touch switch judges whether the input manipulation is a gloved hand manipulation or a bare hand manipulation every time the user makes an input manipulation, then the touch threshold value can be accurately determined, but the operation of the touch switch becomes complicated and individual resources need to bear heavy loads
Solution Approach 1:
The system performs preliminary judgment about the type of hand manipulation (gloved or bare) before processing the actual touch input. By determining the manipulation type in advance based on the sequence and characteristics of detected touch points, the system can pre-configure the appropriate touch threshold value, avoiding the need for complex real-time analysis during each touch event.
Solution Approach 2:
The touch judgment process is segmented into multiple stages: first detecting touch points and their sequences, then judging the type of manipulation (gloved or bare hand), and finally determining the appropriate touch threshold value. This segmentation allows the system to handle complexity in manageable steps rather than all at once, reducing the computational load during critical touch response moments.
2Adaptability or versatility
If a finger of a bare hand is placed for a prescribed time or longer at a position that is slightly spaced from the surface of the touch panel, then the touch threshold value for gloved manipulations can be set, but it is judged a touch of a gloved hand manipulation and the touch threshold value for gloved manipulations is set, causing acceptance of an erroneous manipulation
Solution Approach 1:
The system continuously monitors the position and contact state of the detection target during the initial manipulation phase. By providing feedback about whether the finger is in direct contact with the panel surface or spaced from it, the system can accurately distinguish between intentional gloved hand manipulations and erroneous bare hand placements, thereby selecting the appropriate touch threshold value reliably.
Solution Approach 2:
Instead of relying solely on mechanical contact detection, the system uses coordinate information extraction and temporal sequence analysis to determine manipulation type. By substituting simple mechanical touch detection with a multi-parameter analysis system that considers z-coordinates, touch sequences, and contact duration, the system achieves more reliable differentiation between gloved and bare hand manipulations.
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 straightforward switching between bare hand and gloved hand modes on touch panels, reducing operational complexity and minimizing erroneous input acceptance.
Implementation Method 1
In the case of capacitance touch panels, the touch threshold value is represented by a capacitance value. And it is judged that a touch manipulation has been made if a capacitance value that is larger than the touch threshold value is detected.
Data Source
AI summary
An input device includes a touch panel which detects proximity or contact of a detection target, a coordinates extraction unit which extracts coordinates information including at least a z coordinate, in a direction perpendicular to a surface of the touch panel, of the proximity or contact-detected detection target, and a control unit which determines a contact threshold value for detection of contact of the detection target to the touch panel on the basis of coordinates information of the detection target extracted with an initial manipulation on the surface of the touch panel.