Tethered Selection Handle for Touch Interface Precision
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Touch-enabled devices face imprecision and inaccuracy in content selection due to small display sizes and large finger contact areas, leading to user dissatisfaction with indirect control over interactions.
Innovation Solution
Implementing a tethered selection handle system where a start handle is displayed near the initial input location, an end handle indicates the selection endpoint, and a tethered indicator shows the device's awareness of the user's interaction point, allowing direct control over content selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If touch input with a finger is used to select content on a touch-enabled device, then the device can be controlled directly through touch interface, but the selection precision and accuracy deteriorate due to limited display size and large finger contact area
Solution Approach 1:
The patent introduces a selection indicator as an intermediary element between the user's finger touch and the content being selected. This indicator visually represents the selection boundary and allows the user to precisely define the selection area by moving the indicator to the desired endpoint, thereby resolving the imprecision caused by large finger contact areas while maintaining direct touch control
Solution Approach 2:
The patent implements visual feedback through the selection indicator that continuously displays the current selection boundary as the user drags their finger across the screen. This real-time feedback allows the user to see exactly what will be selected before finalizing the action, improving selection accuracy while maintaining ease of operation through direct touch
2Volume of moving object
If the display size of a touch-enabled device is reduced to make it portable, then the device becomes more portable and easier to carry, but the selection precision deteriorates due to the smaller interaction area
Solution Approach 1:
The patent extends the selection interaction into the temporal dimension by allowing the user to define the selection endpoint after the initial touch, rather than requiring precise simultaneous positioning of both start and end points. This temporal extension of the selection process compensates for the limited spatial area on small displays, maintaining selection precision while preserving device portability
3Ease of operation
If the detected contact area of finger touch is large, then the touch interface is easier to activate, but the selection accuracy deteriorates because the device cannot accurately determine the intended target portion
Solution Approach 1:
The patent segments the selection process into two distinct phases: initialization (where the large contact area easily activates the selection) and refinement (where the selection indicator allows precise target identification). This segmentation allows the system to benefit from both the ease of activation provided by large finger contact and the precision needed for accurate target selection
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Technologies are generally described for providing a tethered selection handle for direct selection of content on a touch or gesture interface. Touch or gesture input on a computing device may be detected to begin content selection, and a start handle may be displayed near the initial input location. An end handle may be displayed to indicate an end of the selection. After the selection, the end handle, a portion of the end handle, or a separate indicator may be displayed at a location of user's current interaction point to indicate to the user that the computing device is aware of the movement of the user's interaction point away from the end handle, but the content selection had not changed. The newly displayed indicator may be tethered to the end handle to further indicate the connection between the end of the selected content and the user's current interaction point.