Touchscreen Selection Control Icon for Precise Text Positioning
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Solution Overview
Problem
Current mobile computing devices with touch-sensitive displays face limitations in selecting and positioning content, particularly struggling with precision near the edges or last line of text, and do not support user accessibility settings effectively, leading to inferior usability compared to mouse and touchpad-based solutions.
Innovation Solution
A method and graphical user interface that includes a selection positioning and control (SPC) icon, allowing users to change the horizontal and vertical position of selections on touch-sensitive displays by detecting finger contact and gestures, enabling precise selection and positioning across the screen, including near edges and last lines of text, with customizable settings for user preferences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If direct manipulation of objects on the screen is used for selection, then the device supports simple tasks like selecting a single word or entire content, but it does not support quick selection of a character, group of characters, or group of words, and does not support tasks at any location on the display equally well
Solution Approach 1:
The patent introduces a selection indicator (I-shaped cursor) as an intermediary element that mediates between the user's touch input and the text selection operation. This indicator can be quickly positioned at any location in the text by touching and dragging, enabling fast selection of characters, words, or groups of text without manual manipulation of each element individually.
Solution Approach 2:
The selection indicator serves multiple functions: it marks the current position in text, indicates the start or end of a selection, and can be dragged to quickly reposition the selection boundary. This multi-functional design allows the same mechanism to handle various selection tasks (single character, word, paragraph, or entire content) uniformly and efficiently.
2Device complexity
If direct manipulation of objects on the screen is used for selection, then the interface remains simple, but it does not support user setting of key control parameters to meet user preferences and user needs
Solution Approach 1:
The patent implements dynamic behavior in the selection indicator through settings such as selection lock (which determines whether the indicator snaps to word boundaries or follows finger movement precisely) and indicator position preferences (above or below the selection). These dynamic adjustments allow the interface to adapt to different user preferences and task requirements while maintaining a simple visual appearance.
Solution Approach 2:
The system allows users to change key parameters including selection lock mode (on/off), indicator position (above/below selection), and minimum selection unit (character/word). These parameter changes enable the same basic interface to accommodate diverse user needs and accessibility requirements without increasing structural complexity.
3Ease of operation
If existing selection methods are used, then the basic selection function is provided, but precision near the edges or last line of text is poor
Solution Approach 1:
The selection indicator provides continuous visual feedback as the user drags it through the text. The indicator clearly shows the current selection boundaries and updates in real-time, allowing users to precisely control the selection extent even near text edges or the last line. The visual feedback mechanism helps users understand exactly what will be selected before confirming the action.
4Ease of operation
If existing selection methods are used, then the basic functionality is maintained, but usability compared to mouse and touchpad-based solutions is inferior
Solution Approach 1:
The selection indicator acts as a mediator that bridges the gap between touch input and selection outcome. By providing a visible, draggable indicator that clearly marks selection boundaries, the system achieves selection accuracy comparable to mouse-based solutions while maintaining the simplicity and directness of touch interaction. The indicator prevents ambiguous selections and ensures precise control over what text is selected.
Data Source
AI summary
A device and method and graphical user interface for positioning a selection and selecting on a computing device with a touch-sensitive display: Displaying within content a selection having a selection start point and a selection end point; displaying a control icon; detecting a contact on the touch-sensitive display; and in response to detecting a change in a horizontal and vertical position of the contact beginning anywhere on the control icon: changing a horizontal position of the selection start point within the content by an amount proportional to the change in a horizontal position of the contact and changing a vertical position of the selection start point within the content by an amount proportional to the change in a vertical position of the contact; wherein the horizontal position of the selection start point with respect to the control icon is changed and a vertical position of the control icon is changed.