Single Point Multi-Finger Gesture Detection on Touch Panels
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Solution Overview
Problem
Conventional touch panels with single-point-single-finger gestures are limited in providing multiple instructions at a single location, making them inconvenient for tasks requiring multiple meanings, such as in computer games, where distinguishing between actions like sweeping a mine or setting a flag is difficult.
Innovation Solution
A touch sensing system that detects single-point-multi-finger gestures by sampling electrical signals from the touch panel, generating trigger signals, and determining whether the touch events correspond to single-point-multi-finger gestures based on signal position and physical quantity variations, allowing for more versatile input methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If single-point-single-finger gestures are used, then the touch panel operation is simple, but the number of instructions at a single point is limited
Solution Approach 1:
The patent extends the gesture recognition from single-dimensional (single finger) to multi-dimensional (multiple fingers at one point) by detecting the number of fingers through capacitive sensing. This allows multiple instructions to be issued from a single spatial point by varying the finger count, thereby increasing adaptability without adding physical buttons or complex mechanical structures.
2Adaptability or versatility
If multi-point-multi-finger technologies are used, then multiple instructions can be provided, but cooperation with other touch buttons is needed which reduces intuitiveness
Solution Approach 1:
The patent segments the gesture recognition into distinct categories based on the number of fingers detected at a single point (single-finger, two-finger, three-finger, etc.). Each finger count corresponds to a specific instruction type, allowing users to issue multiple commands at one location without needing additional buttons or complex combinations, thereby maintaining operational intuitiveness while achieving versatility.
3Adaptability or versatility
If single-point-single-finger gestures are used, then the touch panel structure is simple, but it cannot distinguish multiple actions at the same location
Solution Approach 1:
The patent introduces an intermediary detection layer that measures capacitive changes at the touch point to determine the number of fingers present. This intermediary measurement mechanism translates physical finger presence into distinguishable electrical signals, enabling the system to differentiate between single-finger and multi-finger gestures without requiring complex structural modifications to the touch panel itself.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables more intuitive and versatile input options by accurately identifying single-point-multi-finger gestures, enhancing user interaction with touch panels by allowing multiple instructions at a single point, thereby improving user experience and convenience.
Implementation Method 1
A user uses fingers or a touch pen to contact a touch panel so as to input information into an electronic device. When the user contacts the touch panel, a control system of the touch panel drives connected devices or performs functions according to pre-programmed software.
Implementation Method 2
a physical quantity changing device, wherein when the touch pen performs at least one touch event on a touch panel, the physical quantity changing device changes a physical quantity of a trigger signal corresponding to the at least one touch event and a controlling device of the touch panel determine that the at least one touch event is a single-point-multi-finger gesture based on the change of the physical quantity.
Data Source
AI summary
A controlling device applied to a touch panel. The controlling device includes a sampling module, a determining module and a reporting module. The sampling module samples electrical signals of the touch panel, and generates at least one trigger signal corresponding to the at least one touch event when at least one touch event occurs on the touch panel. The determining module determines whether the at least one touch event is a single-point-multi-finger gesture according to a position of the at least one trigger signal and sampled physical quantity. The reporting module reports the at least one touch event when the determining module determines that the at least one touch event corresponding to the at least one trigger signal is the single-point-multi-finger gesture.