Touchscreen Drag-and-Drop With Secure Multi-Touch Data Transfer
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Solution Overview
Problem
Existing drag and drop technologies on touchscreen devices lack efficient security features and multi-touch input support, leading to potential data access violations and disrupted system performance during data transfer operations.
Innovation Solution
An architecture that enables drag and drop functionality with integrated security features and multi-touch input support on touchscreen devices, allowing concurrent data transfers and multiple drag sessions without disrupting system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional mouse-based drag and drop is used, then precision and control are improved, but accessibility and ease of operation deteriorate for users with mobility impairments
Solution Approach 1:
The patent introduces a touch-sensitive display surface as an intermediary between the user and the drag-and-drop operation. Instead of requiring direct manual manipulation of a mouse, users interact through touch gestures on the display, which translates their hand movements into precise cursor control. This intermediary enables both accessibility (through simple touch) and positioning accuracy (through gesture recognition algorithms).
Solution Approach 2:
The patent replaces the mechanical mouse system with a touch-based interaction system. The mouse requires physical manipulation of a separate device, while the touch interface allows direct interaction with the display surface. This substitution maintains positioning precision through touch coordinate tracking while significantly improving accessibility for users with various mobility impairments.
2Ease of operation
If touch-sensitive display is used for drag and drop, then accessibility is improved, but the ability to precisely control cursor movement deteriorates
Solution Approach 1:
The patent segments the touch interface functionality into distinct components: touch event detection, gesture recognition, and cursor control. By dividing the complex gesture recognition system into manageable segments, each handling specific aspects of touch interaction, the patent achieves both accessibility through simplified touch gestures and precise cursor control through coordinated segment operation.
3Ease of operation
If direct touch interaction is used, then ease of operation is improved, but control precision and reliability deteriorate
Solution Approach 1:
The patent implements feedback mechanisms that continuously monitor touch events and adjust cursor position in real-time. Visual feedback through highlight effects and haptic feedback through vibration motors provide users with immediate confirmation of their actions. This feedback loop ensures that simple touch gestures reliably translate into precise cursor movement and successful drag-and-drop operations, maintaining both ease of use and reliability.
Data Source
Figure 1
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Figure 2D~2F
AI summary
A device implementing drag and drop for touchscreen devices may include a processor configured to detect a drag gesture selecting an item in a first application. The processor may be further configured to detect a touch release at an end of the drag gesture for dropping the item in a second application, and send, in response to the detected touch release, a message to the second application, the message including information for a plurality of representations of the item. The processor may be further configured to receive, from the second application, a request for a representation of the item from among the plurality of representations. The processor may be further configured to send, to the first application, the request for the representation of the item. The processor may be further configured to initiate a data transfer of the representation of the item from the first application to the second application.