Adaptable Haptic Surface Using Variable Stiffness for VR Feedback
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Solution Overview
Problem
Existing feedback devices for entertainment systems, such as virtual reality headsets, are either too bulky and expensive or risk injury, and they fail to realistically simulate physical sensations alongside on-screen actions.
Innovation Solution
An adaptable surface with a first layer that adjusts physical parameters like resistance to deformation in response to in-game conditions, using a control unit to provide realistic physical feedback without bulky hydraulic or pneumatic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional feedback devices using hydraulic or pneumatic pistons are used, then realistic physical feedback is provided, but the device becomes bulky and expensive
Solution Approach 1:
The patent replaces bulky hydraulic or pneumatic mechanical systems with an electroactive polymer-based adaptable surface that can change its physical properties (such as stiffness, texture, or shape) in response to electrical signals. This substitution eliminates the need for heavy pistons and rams while providing similar or superior tactile feedback capabilities.
Solution Approach 2:
The adaptable surface changes its physical parameters (stiffness, texture, shape) dynamically in response to in-game conditions. By modifying the physical state of the surface material rather than using mechanical actuators, the system achieves realistic feedback without the bulk and cost of conventional devices.
2Reliability
If conventional feedback devices are used, then physical feedback is provided, but the device risks injury in virtual reality applications
Solution Approach 1:
The patent uses a flexible adaptable surface made of electroactive polymer material that can safely conform to user contact areas. This thin, flexible surface eliminates the rigid moving parts and pinching hazards of conventional feedback devices, making it safe for use with virtual reality headsets and other applications where user body parts may contact the device.
Solution Approach 2:
By replacing mechanical pistons and rams with an electroactive polymer surface, the system eliminates components that could trap or injure user fingers or hands, while still providing effective tactile feedback through controlled changes in surface properties.
3Ease of manufacture
If haptic feedback devices are used, then physical feedback is provided, but the feedback is not realistic for all physical sensations
Solution Approach 1:
The adaptable surface can dynamically change multiple physical parameters including stiffness, texture, and shape in response to different in-game conditions. This allows the surface to simulate a wide variety of physical sensations (such as different terrains, surfaces, or object textures) that single-type haptic devices cannot replicate.
Solution Approach 2:
The electroactive polymer-based adaptable surface serves multiple functions - it can simulate different textures, stiffness levels, and surface conditions, replacing the need for multiple specialized haptic devices while maintaining ease of manufacture and integration.
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
The adaptable surface enhances user immersion by providing realistic physical feedback that simulates various sensations, while being less bulky and expensive than conventional devices.
Implementation Method 1
The adaptable surface may be made from an electroactive polymer material
Data Source
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AI summary
An adaptable surface for a videogame system is provided in accordance with the present disclosure, the adaptable surface comprising: a first surface layer having one or more physical parameters adaptable in response to in-game conditions, wherein the one or more physical parameters include at least a resistance to deformation of the adaptable surface.