Touchscreen Display Image Repositioning for Pinch Gesture Overlap
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Solution Overview
Problem
The operability of mobile terminals is compromised when a user's finger overlaps with the image during pinching operations, leading to degraded performance.
Innovation Solution
A display device with a detector and controller that moves the image to a reference point before pinching, preventing finger overlap by detecting contact positions and determining pinching actions, allowing for improved user interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pinching operation is performed to enlarge or reduce an image, then the image scaling function is achieved, but the finger overlaps with the image causing degraded operability
Solution Approach 1:
The system performs preliminary actions by detecting the pinching gesture and automatically adjusting the image position and size before the user's finger can overlap with the image content. The controller monitors touch coordinates and proactively moves the image to a position that avoids the finger's path, preventing the harmful overlap before it occurs.
Solution Approach 2:
The controller acts as an intermediary between the user's pinching gesture and the image display. It processes the touch coordinates, calculates the appropriate image position and scaling, and executes the adjustment, thereby mediating the interaction to prevent direct contact between the finger and the image content.
2Ease of operation
If the image is kept stationary during pinching operation, then the operation is simple, but the finger may cover the image area
Solution Approach 1:
The system transitions from a static image display to a dynamic adjustment mechanism. The controller continuously monitors touch coordinates and dynamically adjusts the image position and scaling ratio based on the pinching gesture, allowing the image to move and resize in real-time to maintain visibility while avoiding finger overlap.
Solution Approach 2:
The system implements feedback by continuously monitoring the touch coordinates and the distance between touch points, then using this information to automatically adjust the image position and scaling. This closed-loop control ensures the image remains visible and appropriately sized throughout the pinching operation without requiring complex user maneuvers.
Data Source
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AI summary
A display device (10) includes a display section (20), a detector (30), and a controller (50). The display section (20) has a display surface (22). The display section (20) is configured to display an image (G). The detector (30) is capable of detecting a plurality of contact positions based on contact made on the display surface (22) by a detected object. The plurality of contact positions include a first contact position (P1), a second contact potion (P2), and a third contact position (P3). When the detector (30) detects the first contact position (P1) and subsequently detects the second contact position (P2) and the third contact position (P3), the controller (50) moves the image (G) so that the first contact position (P1) is positioned at a prescribed reference point (BP). When determining that a pinching operation has been performed based on a change in the distance between the second contact position (P2) and the third contact position (P3), the controller (50) performs an enlargement process or a reduction process on the image (G) with respect to the prescribed reference point (BP).