Touch Device Image Zooming Scale Ratio Locking Method
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Solution Overview
Problem
Conventional image zooming methods on touch devices are cumbersome, requiring multiple steps to select and adjust the zoom region and scale ratio, and often involve inconvenient locking mechanisms that obstruct the display.
Innovation Solution
A method that allows users to determine a zooming region by pinching the image to set the scale ratio, with a screen-locking icon to lock or unlock the zooming scale, enabling consistent viewing size across images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional image zooming method is used, then zooming function is provided, but operation procedure is complicated requiring multiple steps to select region and adjust scale ratio
Solution Approach 1:
The patent extracts the scale ratio setting function from the complex multi-step conventional zooming procedure. By using pinch gesture recognition, the system directly determines the zoomed region and calculates the appropriate scale ratio in a single operation, eliminating the need for separate region selection and scale adjustment steps.
Solution Approach 2:
The patent replaces the mechanical step-by-step interaction model with a direct gesture-based interaction model. The pinch gesture naturally captures both region selection and scale ratio determination simultaneously, substituting the conventional sequential mechanical operations with a more intuitive gesture-based approach.
2Reliability
If conventional region locking method is used, then region can be locked, but block appears on displaying panel obstructing display
Solution Approach 1:
The patent removes the visual block element from the region locking mechanism. Instead of displaying a blocking icon or element on the panel, the system uses subtle gesture-based locking without visual obstruction, maintaining region locking functionality while eliminating display obstruction.
Solution Approach 2:
The patent uses visual feedback through color or opacity changes of the locked region boundaries or icons to indicate locking status without creating obstructing blocks. The feedback is provided through subtle visual cues that do not interfere with the overall display visibility.
Data Source
AI summary
Disclosed is a controlling method for fixing a scale ratio of browsing images of a touch device. The controlling method comprises the steps of: determining a zooming region on a display screen, which is determined by pinching the browsing image from a selected position to thus zoom in or zoom out the browsing image, and the scale ratio of zooming is accordingly determined; displaying a screen-locking icon on the display screen, wherein the scale ratio is locked when the screen-locking icon is triggered to be in a locking state; and displaying the other browsing images with the same scale ratio of zooming and with a viewing size same as the zooming region.