Patent ID: 9612658
Date: 2017-04-04
CPC Classifications: G01C,G06F

Claim:
1. A method of generating a tactile sensation comprising the steps of: providing a plurality of ultrasonic transducers arranged to generate a predetermined distribution of non-surface pressure patterns in mid-air using an ultrasonic carrier frequency modulated at a lower frequency so as to be detectable by human skin, wherein the pressure patterns comprise a first non-surface region comprising a focal point for a plurality of acoustic waves modulated at a first frequency providing a first tactile mid-air sensation on human skin, and a second non-surface region comprising a focal point for a plurality of acoustic waves modulated at a second frequency providing a second tactile mid-air sensation on human skin; wherein the first frequency is different than the second frequency; and wherein the first tactile mid-air sensation is different than the second tactile mid-air sensation.