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US 11,543,507 B2Granted
Method and apparatus for producing an acoustic field
AssigneeUltrahaptics IP Ltd
InventorsThomas Andrew Carter, Benjamin John Oliver Long, Sriram Subramanian
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Abstract
The present invention concerns a method and apparatus for the modulation of an acoustic field for providing tactile sensations. A method of creating haptic feedback using ultrasound is provided. The method comprises the steps of generating a plurality of ultrasound waves with a common focal point using a phased array of ultrasound transducers, the common focal point being a haptic feedback point, and modulating the generation of the ultrasound waves using a waveform selected to produce little or no audible sound at the haptic feedback point.
Claims8
A method comprising:
- a) producing an acoustic field using an array of transducers having known relative positions and orientations;
- b) tracking an object within the acoustic field;
- c) using at least one point of focused ultrasound, defining a virtual shape that occupies a virtual volume within the acoustic field;
- and
- d) positioning the at least one point of focused ultrasound in a region where the object intersects the virtual shape.
2 more elements
Dependencies are inferred from the claim text.