Patent ID: 8884927
Filing Date: 2014-11-11
Classification: G06F

Abstract:
1. A system comprising: an ultrasound locator transmitter acoustically coupled with an ultrasound-conducting layer of a display surface and configured to broadcast a detection ultrasound wave across at least a portion of the ultrasound-conducting layer; an ultrasound receiver acoustically coupled with the ultrasound-conducting layer and configured to receive a portion of the detection ultrasound wave scattered from a touch by the human appendage to a location on the display surface; a steered-beam ultrasound transmitter acoustically coupled with the ultrasound-conducting layer and configured to deliver a focused ultrasound wave to the touch location, the focused ultrasound wave generating a down-modulated wave having a power density producing a stress pattern directly perceivable or discernible by the human appendage at the touch location; and a stimulation controller configured to initiate a delivery of the focused ultrasound wave to the touch location by the steered-beam ultrasound transmitter.