Touchscreen Overlay With 3D Tactile Actuators
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Solution Overview
Problem
Current touchscreen systems lack tactile feedback, making it difficult to simulate three-dimensional interfaces like switches and knobs, which are essential for realistic training environments, such as flight simulators, and require costly and complex input/output systems for actuation.
Innovation Solution
A mechanical interface device with three-dimensional tactile actuators, such as push buttons, rotary switches, and potentiometers, is mounted directly onto a touchscreen, using conductive pads to engage and disengage the touchscreen surface, allowing for tactile interaction without electrical connections, and a controller generates graphic images and text in response to these interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If touchscreen systems are used without additional actuators, then device complexity is reduced, but tactile feedback is lost making it difficult to simulate three-dimensional interfaces
Solution Approach 1:
The patent combines a touchscreen display with a mechanical overlay containing three-dimensional actuators (buttons, switches, knobs) mounted directly on the touchscreen surface. This merging allows the system to provide tactile feedback through the mechanical actuators while maintaining the graphical display capabilities of the touchscreen, eliminating the need for separate complex I/O systems.
Solution Approach 2:
The mechanical overlay contains physical actuators that replicate the appearance and tactile characteristics of real aircraft instruments. These copied physical interfaces provide authentic tactile feedback for training purposes while the touchscreen displays the corresponding graphical representations, creating a realistic simulation environment without requiring actual aircraft hardware.
2Measurement precision
If costly input/output systems are used to replicate graphic displays in response to actuator engagement, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex electrical I/O systems with a simpler capacitive sensing mechanism. The touchscreen's capacitive sensors detect the position and state of the mechanical actuators through the overlay structure, eliminating the need for separate wiring and electrical connections for each actuator while maintaining accurate position detection for generating corresponding graphic displays.
Solution Approach 2:
The mechanical overlay acts as an intermediary between the physical actuators and the touchscreen sensing surface. The overlay structure allows capacitive coupling between the actuators and the touchscreen, enabling the system to detect actuator positions and states without direct electrical contact, thereby simplifying the overall system architecture.
3Ease of operation
If traditional wired actuators are used to simulate three-dimensional interfaces, then tactile feedback is provided, but labor intensity and installation cost increase
Solution Approach 1:
The mechanical overlay integrates multiple actuators (buttons, switches, knobs) into a single unified structure that mounts directly onto the touchscreen. This combined structure provides tactile feedback for all controls simultaneously and can be installed as one assembly, dramatically reducing installation time and labor requirements compared to wiring individual actuators separately.
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 provides a cost-effective and labor-efficient way to replicate three-dimensional interfaces on touchscreens, enhancing user experience by offering tactile feedback without the need for expensive I/O systems, allowing for easy configuration and simulation of various instrument arrays.
Implementation Method 1
Each of the actuators is preferably formed of a conductive material and incorporates one or more pads that either engage and disengage the surface of the touchscreen, or move along such surface
Data Source
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AI summary
A mechanical interface device having a number of three-dimensional tactile actuators is mounted to the touchscreen of an electronic device having a monitor, wherein a controller coupled to the touchscreen and to the monitor is operative to cause the monitor to display graphic images and/or text in response to engagement with or movement along the surface of the touchscreen by the three-dimensional tactile actuators.