Patent ID: 11861115
Assignee: APPLE INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 5:
6. The device of claim 1, wherein stimulating the plurality of transducers and receiving the reflected ultrasonic waves comprises:
stimulating the first transducer of the plurality of transducers to transmit a first ultrasonic wave to the surface and receiving a first reflected ultrasonic wave at the first transducer from the surface in response to the transmitted first ultrasonic wave;
stimulating a second transducer of the plurality of transducers to transmit a second ultrasonic wave to the surface and receiving a second reflected ultrasonic wave at the second transducer from the surface in response to the transmitted second ultrasonic wave;
stimulating a third transducer of the plurality of transducers to transmit a third ultrasonic wave to the surface and receiving a third reflected ultrasonic wave at the third transducer from the surface in response to the transmitted third ultrasonic wave; and
stimulating a fourth transducer of the plurality of transducers to transmit a fourth ultrasonic wave to the surface and receiving a fourth reflected ultrasonic wave at the fourth transducer from the surface in response to the transmitted fourth ultrasonic wave.