公开(公告)号：US10564288B2

公开(公告)日：2020-02-18

申请号：US15370240

申请日：2016-12-06

Applicant: GOOGLE LLC

Inventor： Frank Van Diggelen ,  Ke Xiao ,  Gustavo Moura ,  Wyatt Riley

IPC: G01S19/19 ,  H04L25/03 ,  H04L12/24 ,  G01S19/52 ,  G01C21/16 ,  H04W88/02 ,  G01S19/49 ,  G01S19/47

Abstract: In a method for accurately estimating gait characteristics of a user, first parameters indicative of user movement, including a GNSS-derived speed and step count, are monitored. Values of the first parameters are processed to determine values of second parameters indicative of movement of the user. The processing includes applying, as inputs to an estimator (e.g., Kalman filter) having the second parameters as estimator states, values of at least one of the first parameters and/or values of at least one parameter derived from one or more of the first parameters. At least two of the second parameters are collectively indicative of a mapping between step frequency and step length of the user. A graphical user interface may display values of at least one of the second parameters, and/or at least one parameter derived from one or more of the second parameters.

公开(公告)号：US20220035042A1

公开(公告)日：2022-02-03

申请号：US17504855

申请日：2021-10-19

Applicant: GOOGLE LLC

Inventor： Frank Van Diggelen ,  Ke Xiao ,  Gustavo Moura ,  Wyatt Riley

IPC: G01S19/19 ,  H04L25/03 ,  H04L12/24 ,  G01S19/52 ,  G01C21/16

Abstract: In a method for accurately estimating gait characteristics of a user, first parameters indicative of user movement, including a GNSS-derived speed and step count, are monitored. Values of the first parameters are processed to determine values of second parameters indicative of movement of the user. The processing includes using values of at least one monitored parameter to generate one or more inputs to an estimator (e.g., Kalman filter) having the second parameters as estimator states. At least two of the second parameters are collectively indicative of a mapping between step frequency and step length of the user. A graphical user interface may display values of at least one of the second parameters, and/or at least one parameter derived from one or more of the second parameters.

公开(公告)号：US11175409B2

公开(公告)日：2021-11-16

申请号：US16729933

申请日：2019-12-30

Applicant: GOOGLE LLC

Inventor： Frank Van Diggelen ,  Ke Xiao ,  Gustavo Moura ,  Wyatt Riley

IPC: G01S19/19 ,  H04L25/03 ,  H04L12/24 ,  G01S19/52 ,  G01C21/16 ,  H04W88/02 ,  G01S19/49 ,  G01S19/47

Abstract: In a method for accurately estimating gait characteristics of a user, first parameters indicative of user movement, including a GNSS-derived speed and step count, are monitored. Values of the first parameters are processed to determine values of second parameters indicative of movement of the user. The processing includes using values of at least one monitored parameter to generate one or more inputs to an estimator (e.g., Kalman filter) having the second parameters as estimator states. At least two of the second parameters are collectively indicative of a mapping between step frequency and step length of the user. A graphical user interface may display values of at least one of the second parameters, and/or at least one parameter derived from one or more of the second parameters.

公开(公告)号：US20240411028A1

公开(公告)日：2024-12-12

申请号：US18691739

申请日：2022-04-01

Applicant: Google LLC

Inventor： Jing Liang ,  Jibing Wang ,  Robert S. Trocke ,  Li-Chung Tung ,  Jie Song ,  Wyatt Riley ,  TsungYang Wu ,  Yu Lin Shiao

IPC: G01S19/21

Abstract: This document describes techniques, apparatuses, and systems for adaptive wireless transmitter power control for GNSS interference mitigation. This document addresses interference degradation in GNSS operations of computing devices due to integration of a variety of radio interference aggressors in the same platform. A GNSS subsystem is disclosed that may assert power back-off requests to reduce the power of one or more RAT transmitters and limit signal degradation during GNSS subsystem operations. Qualities of the satellite signals received at the GNSS subsystem may be analyzed to determine if it is appropriate to assert or deassert the power back-off requests. In this way, the described techniques, apparatuses, and systems for adaptive wireless transmitter power control for GNSS subsystems may adaptively manage GNSS subsystem operations and other RATs to reduce GNSS signal degradation due to interference.

公开(公告)号：US11874381B2

公开(公告)日：2024-01-16

申请号：US17504855

申请日：2021-10-19

Applicant: GOOGLE LLC

Inventor： Frank Van Diggelen ,  Ke Xiao ,  Gustavo Moura ,  Wyatt Riley

IPC: G01S19/19 ,  H04L25/03 ,  H04L41/22 ,  G01S19/52 ,  H04W88/02 ,  G01S19/47

CPC classification number: G01S19/19 ,  G01S19/52 ,  H04L25/03101 ,  H04L41/22 ,  G01S19/47 ,  H04W88/02

Abstract: In a method for accurately estimating gait characteristics of a user, first parameters indicative of user movement, including a GNSS-derived speed and step count, are monitored. Values of the first parameters are processed to determine values of second parameters indicative of movement of the user. The processing includes using values of at least one monitored parameter to generate one or more inputs to an estimator (e.g., Kalman filter) having the second parameters as estimator states. At least two of the second parameters are collectively indicative of a mapping between step frequency and step length of the user. A graphical user interface may display values of at least one of the second parameters, and/or at least one parameter derived from one or more of the second parameters.