Thumbwheel Touch Sensor Integration for Compact Gesture Input
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Solution Overview
Problem
The challenge lies in integrating a mechanical thumb roller on a mouse within limited space while also incorporating gesture detection capabilities, as existing designs face difficulties in fitting necessary components and balancing mechanical functionality with touch sensor advantages.
Innovation Solution
A compact design combining a mechanical rotational element with a high-resolution touch sensor, utilizing a magnetometer and capacitive touch detection to enable gesture recognition without requiring mechanical depression, allowing for both rotation and touch/lift-off detection in a single device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mechanical thumb roller is integrated into a mouse, then mechanical scrolling functionality is achieved, but the device complexity and space requirements increase
Solution Approach 1:
The patent combines a mechanical rotational element with an electronic touch sensor into a single integrated component. The mechanical element provides rotational input detection while the touch sensor detects touch and lift-off gestures, merging two separate input mechanisms into one unified device that reduces overall complexity and space requirements.
Solution Approach 2:
The integrated component serves multiple functions: it detects rotational input for scrolling, detects touch gestures for navigation, and detects lift-off events for command execution. This multi-functionality eliminates the need for separate mechanical depression mechanisms while providing diverse input capabilities.
2Adaptability or versatility
If gesture detection capabilities are added to a mechanical thumb roller, then touch experience is enhanced, but the space required for components increases
Solution Approach 1:
The patent merges the mechanical rotational element with an electronic touch sensor into a single integrated component. This combination allows gesture detection capabilities to be added without proportionally increasing space requirements, as the touch sensor shares the same physical footprint as the mechanical element.
Solution Approach 2:
The patent replaces traditional mechanical depression mechanisms with electronic touch sensing. Instead of using mechanical switches or pressure sensors that require additional space, the invention uses capacitive touch detection that can be integrated into the existing mechanical component structure, significantly reducing the volume required.
3Device complexity
If mechanical depression is eliminated in favor of touch sensor activation, then device simplicity is improved, but mechanical feedback is reduced
Solution Approach 1:
The patent replaces mechanical depression activation with electronic touch sensor detection. The capacitive touch sensor detects changes in capacitance when a user touches or lifts from the rotational element, providing activation control without requiring mechanical depression. This substitution simplifies the mechanical structure while maintaining ease of operation through intuitive touch interaction.
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
This solution enables advanced touch experiences, such as smooth back & forward navigation and application control, within a constrained space, eliminating the need for mechanical depression and providing precise angular sensing, thus enhancing user input capabilities.
Implementation Method 1
A rotational element and a touch sensor are mounted in an input device, such as a mouse. The rotational element includes a magnet and the magnet includes radial north and south poles.
Implementation Method 2
The touch sensor is a capacitive touch sensor that detects a user's touch and lift off gestures.
Data Source
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AI summary
In one embodiment, the present invention provides an input device with a mechanical wheel which includes a touch sensor. In one embodiment, the wheel is a thumbwheel that uses a magnetometer to detect rotation of a magnet inside the thumbwheel. The touch sensor in one embodiment is a cylindrical floating electrode which is capacitively coupled to a bridge electrode connected to a sensing circuit. The thumbwheel may be used for horizontal scrolling, zoom and other gestures.