Patent ID: 7834850

Claim:
A system for touchless feedback control, comprising: An ultrasonic touchless sensing unit to: generate a three-dimensional ultrasonic sensory space one inch or more above a device and the ultrasonic sensory space is wider than any size of the device, generate a plurality of concentric boundary regions within the three-dimensional ultrasonic sensory space that are each associated with a sensory feedback response; detect and report at least one position of an object in the three-dimensional ultrasonic sensing space from peak-detection of a directed ultrasonic signal with high-resolution positional accuracy; and an indicator communicatively coupled to the touchless sensing unit, the indicator providing the sensory feedback response associated with the at least one position of the object in the three-dimensional ultrasonic sensory space upon crossing a concentric boundary region, wherein the sensory feedback response is visual, auditory, or haptic.