Wire-Tension Haptic Panel for Expressive Feedback
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Solution Overview
Problem
Existing haptic sensation producing devices for information terminals face challenges in reducing device size and weight while providing a highly expressive haptic experience, with previous solutions either being complex or limited in their ability to accurately convey changing haptic sensations.
Innovation Solution
A haptic sensation producing device using a panel-like member held by wires with wire tensile units, where a control unit calculates and optimizes tensile forces to move the member along the display panel's surface, allowing for precise and expressive haptic feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire touch panel is moved in its thickness direction to present a haptic sensation, then a haptic sensation can be presented to the user, but the device configuration becomes complicated and it is difficult to reduce the size and weight of the device
Solution Approach 1:
The invention divides the haptic actuation function into multiple independent wire tensile units, each controlling a specific region of the haptic sensation producing member. This segmentation allows localized deformation rather than moving the entire panel, simplifying the overall device configuration while maintaining haptic presentation capability.
Solution Approach 2:
The invention transitions from moving the panel in the thickness direction (one dimension) to deforming the panel by tensile forces in the plane direction (another dimension). This dimensional change enables haptic sensation presentation with a simpler configuration that doesn't require complex thickness-direction movement mechanisms.
2Reliability
If the touch panel is vibrated in a direction parallel to the input surface to present a haptic sensation, then vibration feedback can be provided to the user, but the displacement range of the member is small and it is difficult to make the haptic sensation more expressive
Solution Approach 1:
The invention uses dynamic control of multiple wire tensile units to deform the haptic sensation producing member in various patterns. By dynamically adjusting which wires are tensed and by how much, the system can create diverse deformation patterns including localized protrusions, waves, and complex shapes, greatly expanding the expressiveness of haptic sensations beyond simple vibration.
Solution Approach 2:
The invention changes the haptic presentation parameters by varying the tensile forces applied to different wires independently. This allows continuous adjustment of deformation magnitude, pattern, and location, enabling a wide range of expressive haptic sensations that can adapt to different content requirements.
3Reliability
If vibration is used to present a haptic sensation, then feedback can be provided to the user, but the haptic sensation cannot be successively changed or provide accuracy for specific content interactions
Solution Approach 1:
The invention applies different tensile forces to different local regions of the haptic sensation producing member through individually controlled wire tensile units. This allows different parts of the panel to exhibit different haptic characteristics simultaneously, enabling localized feedback that corresponds to specific interaction points on the display, thereby improving adaptability to various content requirements.
Solution Approach 2:
The control unit pre-calculates the optimal tensile forces for each wire tensile unit based on the detected touch position and the desired haptic effect. This preliminary calculation enables the system to successively change haptic sensations in response to different user interactions with various content elements, providing accurate and adaptive feedback.
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 a reduction in device size and weight while providing a highly expressive haptic sensation, enabling accurate and continuous feedback that mimics interactions with virtual objects, improving user experience.
Implementation Method 1
wire tensile units that are provided for the respective wires and pull the corresponding wires
Data Source
AI summary
A haptic sensation producing device (10) for presenting a haptic sensation to a user is equipped with a panel-like haptic sensation producing member (11) that is disposed on the front face side of a display panel (20), wires (12) for holding the haptic sensation producing member (11), wire tensile units (13) that are provided for the respective wires and pull the corresponding wires, and a control unit (14) that controls the wire tensile units (13) to move the haptic sensation producing member (11) and generate the haptic sensation. If a change occurs in an object in a content as a result of a touch by the user, the control unit (14) calculates tensile forces such that the haptic sensation conforming to the change can be generated and the tensile forces are optimized, and controls the wire tensile units (13) based on the calculated tensile forces.