Paragraph Selection Handle for Touchscreen Text Navigation
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Solution Overview
Problem
Existing touch-sensitive display technologies on portable electronic devices face challenges in efficiently selecting and manipulating text content, particularly in switching between granularities such as letter-by-letter and paragraph selection, which can be cumbersome and time-consuming, especially when dealing with large text portions that exceed the display area.
Innovation Solution
The method involves detecting user inputs to determine the selection mode, displaying paragraph selection handles when complete rows are selected, and automatically scrolling the display to keep the selection handle coupled with the touch input, allowing intuitive paragraph selection, and using a threshold zone to differentiate between row-by-row and letter-by-letter selection modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual scrolling is used to navigate large text portions, then text selection accuracy is maintained, but user interaction time and complexity increase significantly
Solution Approach 1:
The display system automatically performs scrolling operations based on selection handle position, eliminating the need for manual scrolling. The system monitors the selection handle's position and autonomously adjusts the display view to keep the handle visible, allowing users to focus solely on text selection without time-consuming manual navigation.
Solution Approach 2:
A selection handle acts as an intermediary between the user's touch input and the text selection process. The handle provides visual feedback and automatic scrolling control, mediating the interaction between user intent and system response, thereby reducing the time and effort required for accurate text selection in large text portions.
2Productivity
If paragraph selection mode is added to touch-sensitive displays, then text selection efficiency improves, but device complexity increases
Solution Approach 1:
The system dynamically switches between letter-by-letter and paragraph selection modes based on the position and movement of the selection handle. When the handle reaches paragraph boundaries, the system automatically transitions to paragraph selection mode, providing efficient bulk selection without requiring manual mode switching or complex user instructions.
Solution Approach 2:
The selection handle serves multiple functions: it marks selection boundaries, provides visual feedback, triggers automatic scrolling, and initiates mode transitions between letter-by-letter and paragraph selection. This multi-functional design achieves high text selection efficiency without adding separate complex controls or interfaces.
3Ease of operation
If automatic scrolling is implemented to follow selection handle, then user interaction is simplified, but system control complexity increases
Solution Approach 1:
The system continuously monitors the selection handle's position and provides real-time feedback by automatically scrolling the display to keep the handle visible. This feedback loop creates a seamless user experience where the display adapts to user selections without requiring complex manual control, as the scrolling behavior is directly tied to handle position feedback.
Data Source
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AI summary
A method includes, detecting a first touch input representing a selection of multiple rows of text displayed on a touch-sensitive display of the electronic device, determining whether a complete row of text has been selected from a start point or to an end point of the selected text, and, displaying a paragraph selection handle proximal to said row, the paragraph selection handle being responsive to a second touch input to place the electronic device in a paragraph selection mode for the selection of text.