公开(公告)号：US11288891B2

公开(公告)日：2022-03-29

申请号：US16659329

申请日：2019-10-21

Applicant: InvenSense, Inc.

Inventor： James Christian Salvia ,  Hao-Yen Tang ,  Michael H. Perrott ,  Bruno W. Garlepp ,  Etienne De Foras

IPC: G06K9/00 ,  G06F3/043 ,  G06F1/3231 ,  G06F1/3287 ,  G06V40/13 ,  G06V40/12

Abstract: In a method for operating a fingerprint sensor comprising a plurality of ultrasonic transducers, a first subset of ultrasonic transducers of the fingerprint sensor are activated, the first subset of ultrasonic transducers for detecting interaction between an object and the fingerprint sensor. Subsequent to detecting interaction between an object and the fingerprint sensor, a second subset of ultrasonic transducers of the fingerprint sensor are activated, the second subset of ultrasonic transducers for determining whether the object is a human finger, wherein the second subset of ultrasonic transducers comprises a greater number of ultrasonic transducers than the first subset of ultrasonic transducers.

公开(公告)号：US09673768B2

公开(公告)日：2017-06-06

申请号：US14812576

申请日：2015-07-29

Applicant: INVENSENSE, INC.

Inventor： Michael H. Perrott

IPC: H04R3/00 ,  H03G3/30 ,  H04R29/00 ,  H04H60/04

CPC classification number: H03G3/3026 ,  H03G3/3005 ,  H03G3/3036 ,  H03G3/3089 ,  H04H60/04 ,  H04R3/005 ,  H04R19/005 ,  H04R29/006 ,  H04R2201/003 ,  H04R2430/01

Abstract: Multipath digital microphone systems comprising a multipath digital audio combiner component are described. Exemplary multipath digital microphone systems can switch from conveying one digital audio signal to conveying another digital audio signal based on one or more switching criteria determined by an exemplary multipath digital audio combiner component. Provided implementations can be configured to switch from conveying one digital audio signal to conveying digital audio signal according to an algorithm to provide low-power, high dynamic range digital microphone systems, without audible artifacts associated with conventional digital microphone systems.

公开(公告)号：US11440052B2

公开(公告)日：2022-09-13

申请号：US16395045

申请日：2019-04-25

Applicant: InvenSense, Inc.

Inventor： James Christian Salvia ,  Michael H. Perrott ,  Marian Voros ,  Eldwin Ng ,  Julius Ming-Lin Tsai ,  Nikhil Apte

IPC: B06B1/00 ,  B06B1/06 ,  G06F3/0354 ,  G06V40/13 ,  G06V40/12 ,  H01L27/092

Abstract: An electronic device includes a plurality of CMOS control elements arranged in a two-dimensional array and a plurality of MEMS devices. Each CMOS control element of the plurality of CMOS control elements includes at least one of a low voltage semiconductor device, a high voltage PMOS semiconductor device, and a high voltage NMOS semiconductor device. Each MEMS device of the plurality of MEMS devices is associated with a CMOS control element of the plurality of CMOS control elements. The plurality of CMOS control elements are arranged in the two-dimensional array such that low voltage semiconductor devices are only adjacent to other low voltage semiconductor devices, high voltage PMOS semiconductor devices are only adjacent to other high voltage PMOS semiconductor devices, and high voltage NMOS semiconductor devices are only adjacent to other high voltage NMOS semiconductor devices.

公开(公告)号：US11154906B2

公开(公告)日：2021-10-26

申请号：US16791832

申请日：2020-02-14

Applicant: InvenSense, Inc.

Inventor： Bruno W. Garlepp ,  James Christian Salvia ,  Michael H. Perrott

IPC: B06B1/06 ,  G10K11/34

Abstract: An ultrasonic sensor includes a two-dimensional array of ultrasonic transducers including a plurality of sub-arrays of ultrasonic transducers, wherein a sub-array of ultrasonic transducers of the plurality of sub-arrays of ultrasonic transducers is independently controllable, and wherein a sub-array of ultrasonic transducers has an associated receive channel. A plurality of shift registers is configured to select a receive pattern of ultrasonic transducers of the two-dimensional array of ultrasonic transducers to activate during a receive operation. An array controller is configured to control selection of the ultrasonic transducers during the receive operation according to the receive pattern and configured to shift a position of the receive pattern within the plurality of shift registers such that the ultrasonic transducers activated during the receive operation moves relative to and within the two-dimensional array of ultrasonic transducers.

公开(公告)号：US11112388B2

公开(公告)日：2021-09-07

申请号：US16748513

申请日：2020-01-21

Applicant: InvenSense, Inc.

Inventor： Bruno W. Garlepp ,  Michael H. Perrott ,  James Christian Salvia

IPC: G01N29/34 ,  G11C19/28 ,  B06B1/06 ,  G10K11/34 ,  G11C19/38 ,  H01L41/047 ,  H01L41/113 ,  H03K17/96

Abstract: In a method of using an ultrasonic sensor comprising a two-dimensional array of ultrasonic transducers, a plurality of ultrasonic signals are transmitted according to a beamforming pattern at a position of the two-dimensional array. The beamforming pattern focuses the plurality of ultrasonic signals to location above the two-dimensional array, wherein the beamforming pattern identifies ultrasonic transducers of the two-dimensional array that are activated during transmission of the ultrasonic signals, and wherein at least some ultrasonic transducers of the beamforming pattern are phase delayed with respect to other ultrasonic transducers of the beamforming pattern. At least one reflected ultrasonic signal is received at the position according to a receive pattern, wherein the receive pattern identifies at least one ultrasonic transducers of the two-dimensional array that is activated during the receiving. The transmitting and the receiving are repeated at a plurality of positions of the two-dimensional array.