Patent ID: 11886639
Assignee: ULTRALEAP LIMITED
Field: Computer technology (Electrical engineering)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A method comprising:
detecting movement of a human hand issuing an activation command for an automotive function; to confirm the activation command, creating tactile sensations on a target on a human hand by using a phased array of ultrasound transducers to transmit ultrasound waves to exert an acoustic radiation force on the human skin in mid-air;
adjusting a phase emitted by each ultrasound transducer such that the ultrasound waves arrive concurrently at the target in order to maximize the acoustic radiation force exerted;
wherein the maximize the acoustic radiation force exerted is directed at least one finger of the human hand by adjusting threshold value, frequency, and pattern propagation in view of mechanoreceptor density of the human hand, such that a 2-point discrimination threshold is achieved on at least one finger of the human hand.