Single-Touch Gesture Zoom Control for Touchscreen Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional portable terminals require multi-touch interactions for zooming in or out, which can be inconvenient as users need to repeatedly change the distance between fingers and switch from single to multi-touch for different interactive tasks, such as scrolling and zooming.
Innovation Solution
A method and apparatus that allow zooming in or out of a screen based on a single touch gesture, recognizing circular or oval patterns to adjust the zoom ratio proportionally to the radius of a semicircle or semi-oval, enabling seamless transitions without the need for finger movement off the screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multi-touch method is used for zooming in/out, then screen zooming function is achieved, but user operation convenience deteriorates due to repeated finger movements and task switching
Solution Approach 1:
The patent combines the zooming function with the existing single-touch scrolling interaction. By detecting the direction of the single-touch movement (up/down/left/right), the system merges scrolling and zooming operations into a unified interaction mode, eliminating the need for separate multi-touch gestures and reducing operational complexity
Solution Approach 2:
The single-touch interaction mechanism is designed to serve multiple functions: it can perform both scrolling and zooming operations based on the movement direction and characteristics. This universal interaction method replaces the need for different gesture types (single-touch for scrolling, multi-touch for zooming), simplifying the user interface
2Ease of operation
If single touch is used for scrolling, then operation simplicity is improved, but zooming capability is lost requiring switch to multi-touch
Solution Approach 1:
The single-touch interaction mechanism is designed to serve multiple functions: it can perform both scrolling and zooming operations based on the movement direction and characteristics. This universal interaction method replaces the need for different gesture types (single-touch for scrolling, multi-touch for zooming), simplifying the user interface
Solution Approach 2:
The system dynamically adapts the function of single-touch based on real-time detection of movement characteristics. By analyzing the direction, speed, and pattern of the touch movement, the system can switch between scrolling and zooming modes without requiring the user to change their interaction method, providing flexible and adaptive functionality
3Manufacturing precision
If repeated zoom operations are performed, then desired screen size is achieved, but operation time increases due to multiple steps
Solution Approach 1:
The system enables continuous and smooth zooming operation through single-touch interaction. Instead of discrete steps requiring finger lifting and restarting, the user can perform continuous zooming by maintaining a steady touch and moving their finger, with the system continuously adjusting the zoom level based on the movement, thereby reducing operation time while achieving precise screen size adjustment
Data Source
AI summary
A method and apparatus for zooming in or out and displaying a screen according a gesture of a user is provided. The method includes sensing gesture input, determining whether the gesture input corresponds to a predetermined pattern of a first semicircle or semi oval shape, and zooming in or out the image displayed on the screen and displaying a zoomed in or zoomed out image on a screen wherein the zoom ratio is in proportion to a radius of a first semicircle or a radius of a long or short axis of a first semi oval when the gesture input is the pattern of the first semicircle or semi oval shape.