Touch Panel Input Pattern Recognition via Area Ratio
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Solution Overview
Problem
Small-sized touch panels provide insufficient movement space for multi-touch gestures, limiting the operability and convenience of electronic apparatuses.
Innovation Solution
A method for determining input patterns on touch panels by detecting boundary points, area ratios, and shape characteristics, allowing single-touch input to mimic multi-touch operations, including generating identification codes for specific gestures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multi-touch gestures are used on small-sized touch panels, then specific functions (zoom in, zoom out, rotation) can be performed, but the movement space is excessive small which limits operability and convenience
Solution Approach 1:
The patent uses a circumscribed polygon as a geometric copy or approximation of the input pattern. By detecting boundary points and calculating area ratios between the actual pattern and its circumscribed polygon, the system can determine shape characteristics (circle, arc, line) without requiring precise multi-touch gesture recognition, thus enabling complex functions on small screens with improved operability
2Area of stationary object
If the touch panel size is reduced, then the electronic apparatus becomes more compact, but the movement space for gestures becomes insufficient
Solution Approach 1:
The patent changes the parameter used for gesture recognition from absolute movement distance to relative geometric parameters (area ratio, boundary point detection). This allows the system to recognize gesture patterns regardless of the absolute size of the touch panel, enabling effective gesture control on compact devices with limited movement space
Data Source
AI summary
A method of determining input pattern is adapted to be implemented on an electronic apparatus equipped with a touch panel and includes the steps of: detecting a plurality of boundary points between an input pattern inputted through the touch panel and a circumscribed polygon of the input pattern, detecting an area ratio of a polygon defined by the boundary points to the circumscribed polygon, and determining the shape of the input pattern at least according to the area ratio. The present invention also provides a computer readable storage medium having a program stored therein. When the program is executed which enables an electronic apparatus equipped with a touch panel to determine the shape and/or direction of an input pattern inputted through the touch panel.