Elastomeric Wave Tactile Interface
First Claim
1. A tactile interface to present three dimensional tactile features on a deformable material comprising:
- a tensioned elastomeric material;
a plurality of individually controllable drivers positioned around the perimeter of the tensioned elastomeric material, each driver comprising;
a first electrode, a top surface of the first electrode being coupled to the tensioned elastomeric material;
a second electrode; and
a piezoelectric material, the piezoelectric material being disposed between a top surface of the second electrode and a bottom surface of the first electrode; and
driver circuitry coupled to first and second electrodes of the plurality of individually controllable drivers, configured to receive control information for a selected one of the plurality of individually controllable drivers, and configured to produce a wave pattern in the tensioned elastomeric material in a region of the tactile interface associated with the selected one of the plurality of individually controllable driver.
7 Assignments
0 Petitions
Accused Products
Abstract
A tactile interface includes a plurality of individually controllable drivers positioned about a perimeter of a tensioned elastomeric material. Each driver includes a first electrode, a second electrode, and a piezoelectric material. A top surface of the first electrode is coupled to the tensioned elastomeric material. The piezoelectric material is disposed between a top surface of the second electrode and a bottom surface of the first electrode. Driver circuitry can apply control information to each of the plurality of individually controllable drivers to produce a wave pattern in the tensioned elastomeric material. Some example methods of providing a tactile image on a tactile interface include producing a time-varying potential difference across the top electrode and the bottom electrode of the drivers so that a standing wave pattern can be created in the elastomeric material. The tactile image can be formed by modulating a subset of the plurality of drivers.
35 Citations
27 Claims
-
1. A tactile interface to present three dimensional tactile features on a deformable material comprising:
-
a tensioned elastomeric material; a plurality of individually controllable drivers positioned around the perimeter of the tensioned elastomeric material, each driver comprising; a first electrode, a top surface of the first electrode being coupled to the tensioned elastomeric material; a second electrode; and a piezoelectric material, the piezoelectric material being disposed between a top surface of the second electrode and a bottom surface of the first electrode; and driver circuitry coupled to first and second electrodes of the plurality of individually controllable drivers, configured to receive control information for a selected one of the plurality of individually controllable drivers, and configured to produce a wave pattern in the tensioned elastomeric material in a region of the tactile interface associated with the selected one of the plurality of individually controllable driver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method of providing a tactile image on a tactile interface, wherein the tactile interface comprises a plurality of individually controllable piezoelectrically activated drivers positioned about a perimeter of an elastomeric material, each of the individually controllable piezoelectrically activated drivers comprising a top electrode, a bottom electrode, and a piezoelectric material, the method comprising:
-
applying a time-varying potential difference across the top electrode and the bottom electrode of the plurality of individually controllable piezoelectrically activated drivers forming a standing wave pattern in at least a region of the elastomeric material responsive to the time varying potential difference, wherein the standing wave pattern is produced in response to driving the drivers using at least one of a steady state oscillation frequency and harmonics of the steady state oscillation frequency; and modulating a subset of the plurality of drivers at an oscillation frequency different from the steady state oscillation frequency and the harmonics of the steady state oscillation frequency to form the tactile image. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. An apparatus for interfacing with a tactile interface, wherein the tactile interface comprises a plurality of individually controllable drivers positioned around the perimeter of a tensioned elastomeric material, each driver including a first electrode, where a top surface of the first electrode is coupled to the tensioned elastomeric material, a second electrode, and a piezoelectric material, the piezoelectric material being disposed between a top surface of the second electrode and a bottom surface of the first electrode, the apparatus comprising:
-
a transform engine configured to determine control information requirements for each of the plurality of individually controllable drivers; and a tactile interface controller coupled to the transform engine and configured to provide control information based at least in part on the control information requirements from the transform engine, wherein the tactile interface controller is also arranged to selectively couple the control information to a subset of the plurality of individually controllable drivers such that a tactile image in the tensioned elastomeric material is produced in a region of the tactile interface associated with the subset of the plurality of individually controllable drivers. - View Dependent Claims (24, 25, 26, 27)
-
Specification