公开(公告)号：US20210022663A1

公开(公告)日：2021-01-28

申请号：US16523167

申请日：2019-07-26

Applicant: VIAVI Solutions Inc.

Inventor： Lan SUN ,  Chang Meng HSIUNG

IPC: A61B5/00

Abstract: A device may obtain absorption spectra data associated with tissue of a subject. The device may determine, based on the absorption spectra data, an estimate of a water content associated with the tissue. The device may determine, based on the estimate of the water content, an estimate of a hydration level of the subject. The device may perform one or more actions based on the estimate of the hydration level of the subject.

公开(公告)号：US20200253517A1

公开(公告)日：2020-08-13

申请号：US16780412

申请日：2020-02-03

Applicant: VIAVI Solutions Inc.

Inventor： Lan SUN ,  Chang Meng HSIUNG ,  Babs SOLLER

IPC: A61B5/1455 ,  A61B5/024

Abstract: A device may identify a peak timestamp and a trough timestamp based on a first principal component of photoplethysmography (PPG) data associated with a plurality of wavelength channels. The device may generate a peak absorption spectrum based on the peak timestamp and the PPG data, and may generate a trough absorption spectrum based on the trough timestamp and the PPG data. The device may determine a measured arterial blood spectrum based on the peak absorption spectrum and the trough absorption spectrum. The device may fit the arterial blood spectrum model to the measured arterial blood spectrum to determine a set of values, each value in the set of values corresponding to a variable in a set of variables. The device may calculate an arterial oxygen saturation value based on one or more values of the set of values.

公开(公告)号：US20230273121A1

公开(公告)日：2023-08-31

申请号：US18311989

申请日：2023-05-04

Applicant: VIAVI Solutions Inc.

Inventor： Chang Meng HSIUNG ,  Lan SUN

IPC: G01N21/35 ,  G16C20/70 ,  G16C20/20 ,  G06N20/00 ,  G01J3/10 ,  G01N21/25 ,  G01N21/359 ,  G06V20/69 ,  G06F18/2411 ,  G06F18/2433

CPC classification number: G01N21/35 ,  G01J3/108 ,  G01N21/253 ,  G01N21/359 ,  G06F18/2411 ,  G06F18/2433 ,  G06N20/00 ,  G06V20/698 ,  G16C20/20 ,  G16C20/70 ,  G01N2201/129

Abstract: In some implementations, a device may determine that an unknown sample is an outlier sample by using an aggregated classification model. The device may determine that one or more spectroscopic measurements are not performed accurately based on determining that the unknown sample is the outlier sample. The device may cause one or more actions based on determining the one or more spectroscopic measurements are not performed accurately.

公开(公告)号：US20210164891A1

公开(公告)日：2021-06-03

申请号：US17248867

申请日：2021-02-11

Applicant: VIAVI Solutions Inc.

Inventor： Chang Meng HSIUNG ,  Lan SUN

IPC: G01N21/27 ,  G01J3/02

Abstract: A device may receive a master data set for a first spectroscopic model; receive a target data set for a target population associated with the first spectroscopic model to update the first spectroscopic model; generate a training data set that includes the master data set and first data from the target data set; generate a validation data set that includes second data from the target data set and not the master data set; generate, using cross-validation and using the training data set and the validation data set, a second spectroscopic model that is an update of the first spectroscopic model; and provide the second spectroscopic model.

公开(公告)号：US20210142038A1

公开(公告)日：2021-05-13

申请号：US17248333

申请日：2021-01-20

Applicant: VIAVI Solutions Inc.

Inventor： Chang Meng HSIUNG ,  Lan SUN

IPC: G06K9/00 ,  G06K9/20 ,  G06K9/62 ,  G16C20/70 ,  G01N21/35 ,  G01N21/359 ,  G16C20/20 ,  G06N20/00 ,  G01J3/10 ,  G01N21/25

Abstract: In some implementations, a device may determine that an unknown sample is an outlier sample by using an aggregated classification model. The device may determine that one or more spectroscopic measurements are not performed accurately based on determining that the unknown sample is the outlier sample. The device may cause one or more actions based on determining the one or more spectroscopic measurements are not performed accurately.

公开(公告)号：US20240167872A1

公开(公告)日：2024-05-23

申请号：US18429532

申请日：2024-02-01

Applicant: VIAVI Solutions Inc.

Inventor： Lan SUN ,  Chang Meng HSIUNG ,  Edward GOODING

IPC: G01J3/28

CPC classification number: G01J3/28 ,  G01J2003/2836 ,  G01J2003/284 ,  G01J2003/2886

Abstract: In some implementations, a device may receive spectroscopic data associated with a dynamic process. The device may generate a principal component analysis (PCA) model based on a first block of spectra from the spectroscopic data. The device may project a second block of spectra from the spectroscopic data to the PCA model generated based on the first block of spectra. The device may determine a value of a metric associated with the second block based on projecting the second block of spectra to the PCA model. The device may determine whether the dynamic process has reached an end point based on the value of the metric associated with the second block.

公开(公告)号：US20240074669A1

公开(公告)日：2024-03-07

申请号：US18507273

申请日：2023-11-13

Applicant: VIAVI Solutions INC.

Inventor： Chang Meng HSIUNG ,  Lan SUN ,  Marc K. VON GUNTEN

IPC: A61B5/024

CPC classification number: A61B5/02416 ,  A61B5/681

Abstract: A device may determine end-of-phase information for a plurality of wavelength channels of photoplethysmography (PPG) data. The device may calculate a set of baseline correction points for each wavelength channel of the plurality of wavelength channels. The set of baseline correction points may be calculated based on end-of-phase information for a wavelength channel of the plurality of wavelength channels and PPG data associated with the wavelength channel. The device may perform a baseline correction for each wavelength channel of the plurality of wavelength channels. A baseline correction may be performed for the wavelength channel based on the set of baseline correction points associated with the wavelength channel and the PPG data associated with the wavelength channel. The device may generate a baseline corrected heartbeat profile using a principal component analysis of a result of baseline correcting each wavelength channel of the plurality of wavelength channels.

公开(公告)号：US20230243699A1

公开(公告)日：2023-08-03

申请号：US17805099

申请日：2022-06-02

Applicant: VIAVI Solutions Inc.

Inventor： Lan SUN ,  Chang Meng HSIUNG ,  Edward GOODING

IPC: G01J3/28

CPC classification number: G01J3/28 ,  G01J2003/2836 ,  G01J2003/284 ,  G01J2003/2886

Abstract: In some implementations, a device may receive spectroscopic data associated with a dynamic process. The device may generate a principal component analysis (PCA) model based on a first block of spectra from the spectroscopic data. The device may project a second block of spectra from the spectroscopic data to the PCA model generated based on the first block of spectra. The device may determine a value of a metric associated with the second block based on projecting the second block of spectra to the PCA model. The device may determine whether the dynamic process has reached an end point based on the value of the metric associated with the second block.

公开(公告)号：US20200253492A1

公开(公告)日：2020-08-13

申请号：US16780406

申请日：2020-02-03

Applicant: VIAVI Solutions Inc.

Inventor： Chang Meng HSIUNG ,  Lan SUN ,  Marc K. VON GUNTEN

IPC: A61B5/024

Abstract: A device may determine end-of-phase information for a plurality of wavelength channels of photoplethysmography (PPG) data. The device may calculate a set of baseline correction points for each wavelength channel of the plurality of wavelength channels. The set of baseline correction points may be calculated based on end-of-phase information for a wavelength channel of the plurality of wavelength channels and PPG data associated with the wavelength channel. The device may perform a baseline correction for each wavelength channel of the plurality of wavelength channels. A baseline correction may be performed for the wavelength channel based on the set of baseline correction points associated with the wavelength channel and the PPG data associated with the wavelength channel. The device may generate a baseline corrected heartbeat profile using a principal component analysis of a result of baseline correcting each wavelength channel of the plurality of wavelength channels.

公开(公告)号：US20230349818A1

公开(公告)日：2023-11-02

申请号：US18345585

申请日：2023-06-30

Applicant: VIAVI Solutions Inc.

Inventor： Chang Meng HSIUNG ,  Lan SUN

IPC: G01N21/27 ,  G01J3/02

CPC classification number: G01N21/274 ,  G01J3/0275 ,  G01N2201/129

Abstract: A device may receive a master data set for a first spectroscopic model; receive a target data set for a target population associated with the first spectroscopic model to update the first spectroscopic model; generate a training data set that includes the master data set and first data from the target data set; generate a validation data set that includes second data from the target data set and not the master data set; generate, using cross-validation and using the training data set and the validation data set, a second spectroscopic model that is an update of the first spectroscopic model; and provide the second spectroscopic model.