Active acoustic touch location for electronic devices
First Claim
Patent Images
1. A method of determining the location of a user touch on a display of an electronic device, the method comprising:
- generating standing waves to propagate through a display on an electronic device responsive to detecting a user touch on the display;
detecting a sound of the standing waves affected by the user touch;
converting an amplitude of the detected sound into digitized signals;
computing an acoustic signature for the amplitude based on the digitized signals; and
determining a location of the user touch on the display based on the computed acoustic signature.
3 Assignments
0 Petitions
Accused Products
Abstract
An electronic device has a display, a controller, and a pair of haptic transducers connected to the display. The controller configures the haptic transducers to momentarily vibrate the display. A pair of sensors disposed on the display detects variations caused by the user touch in the vibrations. Based on an analysis of these variations, the controller can determine the location of the user touch on the touch-sensitive display.
45 Citations
18 Claims
-
1. A method of determining the location of a user touch on a display of an electronic device, the method comprising:
-
generating standing waves to propagate through a display on an electronic device responsive to detecting a user touch on the display; detecting a sound of the standing waves affected by the user touch; converting an amplitude of the detected sound into digitized signals; computing an acoustic signature for the amplitude based on the digitized signals; and determining a location of the user touch on the display based on the computed acoustic signature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An electronic device comprising:
-
a display; first and second haptic transducers connected to the display; and a controller configured to; control the first and second haptic transducers to generate standing waves that propagate through the display responsive to detecting a user touch on the display; detect a sound of the standing waves affected by the user touch; convert an amplitude of the detected sound into digitized signals; compute an acoustic signature for the amplitude based on the digitized signals; and determine a location of the user touch on the display based on the computed acoustic signature. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
-
Specification