公开(公告)号：US20170330552A1

公开(公告)日：2017-11-16

申请号：US15589941

申请日：2017-05-08

Applicant: InvenSense, Inc.

Inventor： Bruno W. GARLEPP ,  James Christian SALVIA ,  Yang PAN ,  Michael H. PERROTT

IPC: G10K11/34 ,  B06B1/06

Abstract: An ultrasonic sensor includes a two-dimensional array of ultrasonic transducers. A signal generator is configured to generate a plurality of transmit signals, wherein each transmit signal of the plurality of transmit signals has a different phase delay relative to other transmit signals of the plurality of transmit signals. A plurality of shift registers is configured to store a beamforming space including a beamforming pattern to apply to the two-dimensional array, wherein the beamforming pattern identifies a transmit signal of the plurality of transmit signals that is applied to each ultrasonic transducer of the beamforming space that is activated during a transmit operation. An array controller is configured to control activation of ultrasonic transducers during a transmit operation according to the beamforming pattern and configured to shift a position of the beamforming space within the plurality of shift registers such that the beamforming space moves within the two-dimensional array.

公开(公告)号：US20170330553A1

公开(公告)日：2017-11-16

申请号：US15589951

申请日：2017-05-08

Applicant: InvenSense, Inc.

Inventor： Bruno W. GARLEPP ,  James Christian SALVIA ,  Yang PAN ,  Michael H. PERROTT

IPC: G10K11/34 ,  B06B1/06

Abstract: In a method for transmit beamforming of a two-dimensional array of ultrasonic transducers, a beamforming pattern to apply to a beamforming space of the two-dimensional array of ultrasonic transducers is defined. The beamforming space includes a plurality of elements, where each element of the beamforming space corresponds to an ultrasonic transducer of the two-dimensional array of ultrasonic transducers, where the beamforming pattern identifies which ultrasonic transducers within the beamforming space are activated during a transmit operation of the two-dimensional array of ultrasonic transducers, and wherein at least some of the ultrasonic transducers that are activated are phase delayed with respect to other ultrasonic transducers that are activated. The beamforming pattern is applied to the two-dimensional array of ultrasonic transducers. A transmit operation is performed by activating the ultrasonic transducers of the beamforming space according to the beamforming pattern.

公开(公告)号：US20180131543A1

公开(公告)日：2018-05-10

申请号：US14786104

申请日：2015-07-09

Applicant: INVENSENSE, INC.

Inventor： Yuanjin LI ,  Yang PAN ,  Jia ZHAO ,  Dan LI ,  Hao DING

IPC: H04L27/12 ,  H04L27/28 ,  H04L27/16 ,  H03L7/087

CPC classification number: H04L27/122 ,  H03L7/087 ,  H04L27/10 ,  H04L27/16 ,  H04L27/28

Abstract: Systems and techniques for communicating data as a function of frequency are presented. In an implementation, a system includes a microelectromechanical systems (MEMS) sensor, a digital signal processor and a frequency detection circuit. The digital signal processor is coupled to the MEMS sensor. The frequency detection circuit receives data encoded as a function of frequency from the digital signal processor via a clock communication channel.