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：US10823555B2

公开(公告)日：2020-11-03

申请号：US16386051

申请日：2019-04-16

Applicant: InvenSense, Inc.

Inventor： Hemabh Shekhar ,  Shang Hung Lin

IPC: G01B21/16 ,  A63F13/21 ,  H04W64/00

Abstract: A system and method for efficiently determining trajectory and/or location of a device (or user thereof). In a non-limiting example, rotation matrix coefficients may be analyzed in conjunction with stepping information to determine device trajectory and/or location. The system and method may, for example, be implemented in a MEMS sensor system, for example comprising a MEMS gyroscope, MEMS accelerometer, MEMS compass and/or MEMS pressure sensor.

公开(公告)号：US10260871B1

公开(公告)日：2019-04-16

申请号：US14537503

申请日：2014-11-10

Applicant: InvenSense, Inc.

Inventor： Hemabh Shekhar ,  Shang Hung Lin

IPC: G01C21/16 ,  G01B21/16

Abstract: A system and method for efficiently determining trajectory and/or location of a device (or user thereof). In a non-limiting example, rotation matrix coefficients may be analyzed in conjunction with stepping information to determine device trajectory and/or location. The system and method may, for example, be implemented in a MEMS sensor system, for example comprising a MEMS gyroscope, MEMS accelerometer, MEMS compass and/or MEMS pressure sensor.

公开(公告)号：US20160051167A1

公开(公告)日：2016-02-25

申请号：US14464999

申请日：2014-08-21

Applicant: InvenSense, Inc.

Inventor： Sankalita Saha ,  Hemabh Shekar ,  Shang Hung Lin ,  Chih-Chieh Geoff Chang

IPC: A61B5/11

CPC classification number: A61B5/1123 ,  A61B5/7264

Abstract: A system and method for efficiently and accurately classifying user activity. In a non-limiting example, accelerometer signals and/or gyroscope sensor signals may be analyzed to classify user activity, for example, that of a user of a handheld and/or wearable device. Information from additional sources and sensors (e.g., other inertial sensors, non-inertial sensors, passive sensors, etc.) may also be utilized.

Abstract translation: 一种用于高效，准确地分类用户活动的系统和方法。 在非限制性示例中，可以分析加速度计信号和/或陀螺仪传感器信号以对用户活动进行分类，例如手持和/或可穿戴设备的用户的活动。 还可以使用来自附加源和传感器（例如，其它惯性传感器，非惯性传感器，无源传感器等）的信息。