Haptic device with indirect haptic feedback
AssigneeNorthwestern University
InventorsJames Edward Colgate, Michael A. Peshkin, John Glassmire, Laura Winfield Alexander
Life of this patent
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Abstract
An indirect haptic device having a substrate having a touch surface, a position sensor of a user's clothed appendage relative to the touch surface, a friction modulator associated with the substrate, a control device connected to the position sensor and the friction modulator, wherein a coefficient of friction on the touch surface is modulated in response to a sensed position of a user's clothed appendage relative to the touch surface and/or a derivative thereof.
Claims20
An indirect haptic device comprising:
- a substrate having a touch surface, a position sensor that senses a position of a user's clothed appendage relative to the touch surface, a friction modulator associated with the substrate, a control device connected to the position sensor and the friction modulator, wherein a coefficient of friction on the touch surface is modulated in response to a sensed position of a user's clothed appendage relative to the touch surface and/or a derivative thereof, and wherein the friction modulator does not alter the contour of the touch surface in a manner that is perceptible to a user's sight or touch.
An indirect haptic device comprising:
- a substrate having a touch surface, a pressure sensor, a friction modulator associated with the substrate, a control device connected to the pressure sensor and the friction modulator, wherein a coefficient of friction on the touch surface is modulated in response to a sensed force of a user's clothed appendage on the touch surface, and wherein the friction modulator does not alter the contour of the touch surface in a manner that is perceptible to a user's sight or touch.
An apparatus comprising a plurality of indirect haptic devices arranged in a pattern, each of the indirect haptic devices including a substrate having a touch surface, a friction modulator associated with the substrate, and a control device connected to the friction modulator, wherein a coefficient of friction of each respective touch surface is modulated based on a time or in response to movement of a user's clothed appendage relative to the respective touch surface and/or a derivative thereof, and wherein the friction modulator does not alter the contour of the touch surface in a manner that is perceptible to a user's sight or touch.
Dependencies are inferred from the claim text.