Generating perceptible touch stimulus
First Claim
Patent Images
1. An apparatus comprising:
- a first surface electrode and an arrangement of second insulated surface electrodes;
a display configured to display an image; and
a controller configured to apply a potential difference between the first surface electrode and the arrangement of second insulated surface electrodes, and configured to control at least a variation in the applied potential difference in dependence upon the displayed image, wherein the applied potential difference is configured to provide a touch stimulus by modulating a frictional force applied to a digit of a user when the digit, contacting a face of the apparatus, is traced over the face.
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Abstract
Apparatus including a first surface electrode and an arrangement of second insulated surface electrodes; a display configured to display an image; and a controller configured to apply a potential difference between the first surface electrode and the arrangement of second insulated surface electrodes and configured to control at least a variation in the applied potential difference in dependence upon the displayed image.
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Citations
24 Claims
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1. An apparatus comprising:
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a first surface electrode and an arrangement of second insulated surface electrodes; a display configured to display an image; and a controller configured to apply a potential difference between the first surface electrode and the arrangement of second insulated surface electrodes, and configured to control at least a variation in the applied potential difference in dependence upon the displayed image, wherein the applied potential difference is configured to provide a touch stimulus by modulating a frictional force applied to a digit of a user when the digit, contacting a face of the apparatus, is traced over the face. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method comprising:
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displaying an image; applying a varying potential difference between a first surface electrode of an apparatus and an arrangement of second insulated surface electrodes of the apparatus; and controlling at least a variation in the applied potential difference in dependence upon the displayed image, wherein the applied potential difference is configured to provide a touch stimulus by modulating a frictional force applied to a digit of a user when the digit, contacting a face of an apparatus, is traced over the face. - View Dependent Claims (19, 20, 21, 22)
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23. An apparatus comprising:
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a first surface electrode and a plurality of second insulated surface electrodes distributed over an area; a controller configured to apply a different potential difference between the first surface electrode and each of the plurality of second insulated surface electrodes and configured to control a spatial variation in the applied potential difference over the area, wherein the applied potential difference is configured to provide a touch stimulus by modulating a frictional force applied to a digit of a user only when the digit, contacting a face of the apparatus, is traced over the face, wherein the touch stimulus spatially varies across the area. - View Dependent Claims (24)
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Specification