Curved Touch Input Device for Intuitive Gesture Recognition
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Solution Overview
Problem
Existing touch input devices lack intuitive and accurate gesture input capabilities, especially when used without visual reference, leading to potential recognition errors and user fatigue due to inadequate tactile feedback and design.
Innovation Solution
A touch input device featuring a gesture input unit at its center and a swiping input unit along its edge, with distinct tactile features such as gradations and varying slopes, allowing users to input gestures with improved accuracy and comfort by utilizing a curved concave surface and wrist support, enabling intuitive recognition of touch regions without visual attention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a flat touch input surface is used, then the device structure is simple, but the user cannot intuitively recognize touch regions without visual attention
Solution Approach 1:
The patent applies curvature by creating a concave gesture input unit with a curved bottom surface. This curvature provides tactile feedback that allows users to intuitively recognize the center region without visual attention, while the surrounding flat or inclined swiping regions provide distinct tactile boundaries. The curved surface geometry creates natural tactile cues for finger placement and gesture execution.
Solution Approach 2:
The patent divides the touch input surface into regions with different local qualities: the central gesture input unit has a concave curved bottom surface for gesture recognition, while the surrounding swiping input unit has a flat or inclined surface. This local differentiation provides distinct tactile feedback for different input modes, enabling intuitive region recognition without visual attention.
2Measurement precision
If the touch input device lacks tactile differentiation, then the manufacturing is simple, but gesture input accuracy deteriorates
Solution Approach 1:
The concave curved bottom surface of the gesture input unit provides distinct tactile feedback that helps users accurately locate and execute gestures in the center region. The curvature creates a natural tactile target that improves gesture input accuracy without requiring complex additional components.
Solution Approach 2:
The patent adds a vertical dimension to the touch input surface by creating a concave depression in the gesture input unit. This third dimension (depth) provides tactile differentiation between the gesture region and surrounding areas, enabling accurate gesture input through touch alone without visual reference.
3Ease of operation
If the touch input device provides no tactile feedback, then the structure is simple, but user fatigue increases during prolonged use
Solution Approach 1:
The curved bottom surface of the concave gesture input unit provides continuous tactile feedback as the user's finger moves across it. This tactile feedback helps users maintain proper finger placement and gesture trajectory without visual attention, reducing cognitive load and user fatigue during prolonged use.
Solution Approach 2:
The patent incorporates passive tactile feedback through the curved surface geometry of the gesture input unit. As users interact with the device, the curved surface provides natural tactile cues about finger position and pressure distribution, enabling self-correction and reducing mental effort required for accurate gesture input.
Data Source
AI summary
A touch input device includes a touch unit to which a user can input a touch gesture, wherein the touch unit includes a gesture input unit positioned at a center of the touch unit and a swiping input unit inclined downward along an edge of the gesture input unit, and the gesture input unit and the swiping input unit receive separate touch signals.