公开(公告)号：US20190170546A1

公开(公告)日：2019-06-06

申请号：US16212032

申请日：2018-12-06

Applicant: InvenSense, Inc.

Inventor： Joe Youssef ,  Karthik Katingari ,  Sebastian Riccardi ,  Hemabh Shekhar

IPC: G01D18/00

Abstract: A sensor may be automatically calibrated during manufacture by providing a sensor processing unit having an integrated sensor, performing a check to determine if the integrated sensor has been previously calibrated upon a reset. When it has been determined the integrated sensor has not been previously calibrated, an automated calibration pattern may be imparted to the sensor so that a calibration parameter is determined.

公开(公告)号：US10018481B1

公开(公告)日：2018-07-10

申请号：US14502168

申请日：2014-09-30

Applicant: InvenSense, Inc.

Inventor： Hemabh Shekhar ,  Dhruv Srivastava ,  Shang Hung Lin ,  Sankalita Saha

IPC: G01C22/00

CPC classification number: G01C22/006

Abstract: A system and method for reliably counting user steps. Various aspects may, for example, comprise processing a plurality of frequency bands of at least one sensor signal to accurately count user steps. A plurality of filtered sensor signals may be formed by filtering a sensor signal with a plurality of band-pass filters from which a dominant filtered sensor signal may be selected. The selected dominant filtered sensor signal may then be used to count user steps. Further, a frequency band of a sensor signal may be selected such that if it is determined the user is not engaged in a non-stepping activity, user steps may be counted using the content of the signal in the selected frequency band. Still further, user steps may be counted using an identified dominant harmonic.

公开(公告)号：US20170234756A1

公开(公告)日：2017-08-17

申请号：US15418603

申请日：2017-01-27

Applicant: InvenSense, Inc.

Inventor： Joe Youssef ,  Hemabh Shekhar ,  Karthik Katingari ,  William Kerry Keal ,  Mubbasher Mukhtar

IPC: G01L27/00

CPC classification number: G01L27/005

Abstract: Systems and methods are disclosed for calibrating a pressure sensor associated with a mobile device. The reference pressure information may be obtained from an associated device and then be used to calibrate the pressure sensor.