公开(公告)号：US11800299B2

公开(公告)日：2023-10-24

申请号：US17747454

申请日：2022-05-18

Applicant: Qualcomm Technologies Inc.

Inventor： Robert Littrell ,  Ronald Gagnon

IPC: H04R3/00 ,  H04R19/04 ,  H04R17/02 ,  H04R1/04 ,  H04R19/00

CPC classification number: H04R19/04 ,  H04R1/04 ,  H04R3/00 ,  H04R17/02 ,  H04R19/005 ,  H04R2201/003

Abstract: A MEMS transducer system has a transducer configured to convert a received signal into an output signal for forwarding by a transducer output port, and an integrated circuit having an IC input in communication with the transducer output port. The IC input is configured to receive an IC input signal produced as a function of the output signal. The system also has a dividing element coupled between the IC input and the transducer output port. The dividing element is configured to selectively attenuate one or more signals into the IC input to at least in part produce the IC input signal. Other implementations may couple a feedback loop to the ground of the transducer (similar to bootstrapping), or pick off voltages at specific portions of the transducer.

公开(公告)号：US11617041B2

公开(公告)日：2023-03-28

申请号：US15930530

申请日：2020-05-13

Applicant: Qualcomm Technologies, Inc.

Inventor： Robert J. Littrell ,  Ronald Gagnon ,  Karl Grosh

IPC: H04R17/02 ,  H04R3/00 ,  H04R3/04

Abstract: A device comprising: a sensor; and a first circuit configured to detect when an input stimulus to the sensor satisfies one or more detection criteria, and further configured to produce a signal upon detection that causes adjustment of performance of the device; and a second circuit for processing input following detection, wherein the second circuit is configured to increase its power level following detection, relative to a power level of the second circuit prior to detection.