Single-Handed Operation Mode for Mobile Touchscreen Interfaces
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Solution Overview
Problem
Large screen mobile devices pose difficulties in single-handed operation due to the unreachable location of graphical user interface elements, with existing solutions either shrinking the interface or limiting accessibility by removing parts of it.
Innovation Solution
A method involving specific touchscreen gestures to activate a single-handed operation mode, allowing users to select actionable items by determining a sequence of items, highlighting them through gestures, and selecting them for processing without altering the interface size or removing parts of it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the touchscreen size is increased to provide a larger display area, then the display capability is improved, but the accessibility of upper portion elements to single-handed operation deteriorates
Solution Approach 1:
The patent introduces a temporal dimension to the interaction model. Instead of requiring spatial reachability, the system allows users to access upper portion elements through time-sequenced gestures. The activation gesture (e.g., triple-tap on lower portion) triggers a mode change that redirects subsequent gestures to target upper portion elements, effectively trading spatial accessibility for temporal sequencing of operations.
Solution Approach 2:
The patent introduces a mode activation mechanism as an intermediary between the user's thumb and the unreachable upper portion elements. The activation gesture serves as a mediator that changes the system's state, enabling the thumb to access upper portion elements through redirected gesture paths without requiring direct spatial reachability.
2Ease of operation
If the graphical user interface is shrunk to allow thumb access, then the accessibility is improved, but the display quality and readability deteriorate
Solution Approach 1:
The patent implements dynamic behavior in the graphical user interface through mode switching. The interface maintains its full original size and layout, but changes its interaction dynamics based on the activated mode. In single-handed operation mode, the system dynamically interprets gestures differently, allowing full-size elements to be accessed through redirected gesture paths rather than requiring the interface to physically shrink.
3Ease of operation
If parts of the graphical user interface are removed to enable reachability, then the accessibility to remaining elements is improved, but the functionality and completeness of the interface deteriorates
Solution Approach 1:
The patent performs preliminary action by activating a mode state before the actual element selection occurs. The activation gesture (e.g., triple-tap on lower portion) prepares the system in advance by switching to single-handed operation mode, which then enables subsequent gestures to target upper portion elements that would otherwise be inaccessible. This preliminary mode activation ensures all interface elements remain available while enabling thumb access through pre-configured gesture redirection.
Data Source
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AI summary
A computer-based method for selecting an actionable item displayed in a graphical user interface on a mobile computer system is provided. The method includes detecting a first gesture, ending at a first position, on a lower portion of a touchscreen; in response to detecting the first gesture, activating a single-handed operation mode; determining a sequence of actionable items for a foreground application executing on a processor; detecting a second gesture on the touchscreen, the second gesture beginning at the first position and ending at a second position; in response to detecting the second gesture, highlighting one of the actionable items of the sequence based on the second position; detecting a third gesture on the touchscreen; and, in response to detecting a release at the second position as the third gesture, selecting the highlighted actionable item for processing by the foreground application and de-activating the single-handed operation mode.