Touch Input Detection for Single-Finger Zoom Gestures
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Solution Overview
Problem
Conventional touch input detection methods for zoom gestures are complicated by the need to separately activate icons and provide a graphical user interface, leading to overlapping background images and difficulties in selecting areas for expansion or reduction on a screen.
Innovation Solution
A touch input detection method that detects a first and second touch input at a predetermined time interval, calculates the areas of both inputs, and generates a zooming signal based on changes in these areas, allowing for zoom-in or zoom-out signals without the need for a separate GUI, using a touch panel with matrix-arranged touch cells or electrostatic capacity detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional zoom gesture detection methods are used with separate icons and GUI, then zoom functionality is achieved, but the screen structure becomes complicated and background images overlap with graphic images
Solution Approach 1:
The patent merges the zoom gesture detection function directly into the touch panel by detecting changes in touch input area, eliminating the need for separate zoom icons and GUI elements. This integration allows zoom functionality to be achieved without adding visual complexity to the screen structure or causing overlap between background and foreground elements.
Solution Approach 2:
The touch panel itself performs the zoom detection function by monitoring changes in touch input area, rather than requiring separate dedicated zoom control elements. The system uses the touch panel's inherent capability to detect touch parameters and derives zoom gestures from area changes, making the touch panel self-sufficient for this function.
2Adaptability or versatility
If conventional zoom gesture methods with separate icons are used, then zoom functionality is provided, but user touch inputs become complicated
Solution Approach 1:
The patent combines multiple functions (touch input detection and zoom gesture recognition) into a single integrated process. Users perform simple touch operations on the display, and the system automatically detects area changes to generate zoom commands, eliminating the need for separate icon activation and GUI interaction steps.
Solution Approach 2:
The system automatically detects and interprets zoom gestures from raw touch input data without requiring users to learn or perform complex sequences. The touch panel and processing system work together to automatically identify area changes and convert them into zoom commands, making the operation intuitive and simple for users.
3Adaptability or versatility
If conventional zoom detection is used, then zoom functionality is achieved, but it is difficult to select an area to be expanded or reduced on a screen
Solution Approach 1:
The system automatically determines the zoom area based on the touch input area itself, eliminating the need for separate area selection mechanisms. When a user touches the display, the system uses the touched area as the zoom target, making area selection intuitive and automatic rather than requiring additional steps or complex detection.
Solution Approach 2:
The system pre-establishes the relationship between touch input area and zoom target area. By defining that the touched area directly corresponds to the zoom region, the system eliminates the need for post-touch area selection or complex detection algorithms, making the process straightforward and efficient.
Data Source
AI summary
Provided is a touch input detection method that detects a contact or approach of a touch input means (90) such as a finger of a human body, an electric conductor or a touch pen on a touch panel (10) and produces an input signal. The touch input detection method includes the steps of: (a) detecting a first touch input; (b) calculating an area where the first touch input has been detected; (c) detecting a second touch input that occurs at a predetermined time interval after occurrence of the first touch input; (d) calculating an area where the second touch input has been detected; and (e) judging a change in the areas from the first touch input to the second touch input to thus produce a zooming signal. Accordingly, a zooming signal is produced according to a change in an area of a touch input, to thus implement a zoom gesture very simply, to also realize the zoom gesture with only one finger, and to thereby achieve a touch input operation compactly.