公开(公告)号：US20230204417A1

公开(公告)日：2023-06-29

申请号：US17646038

申请日：2021-12-27

Applicant: VIAVI Solutions Inc.

Inventor： Chang Meng HSIUNG ,  Lan SUN ,  Michael KLIMEK

IPC: G01J3/02

CPC classification number: G01J3/0275 ,  G01J2003/2836

Abstract: In some implementations, a device may identify, based on spectroscopic data, a pseudo steady state end point indicating an end of a pseudo steady state associated with the blending process. The device may identify a reference block and a test block from the spectroscopic data based on the pseudo steady state end point. The device may generate a raw detection signal associated with the reference block and a raw detection signal associated with the test block. The device may generate a statistical detection signal based on the raw detection signal associated with the reference block and the raw detection signal associated with the test block. The device may determine whether the blending process has reached a steady state based on the statistical detection signal.

公开(公告)号：US20210335495A1

公开(公告)日：2021-10-28

申请号：US16859568

申请日：2020-04-27

Applicant: VIAVI Solutions Inc.

Inventor： Chang Meng HSIUNG ,  Lan SUN

IPC: G16H50/50 ,  G06F17/17

Abstract: A device may obtain a heartbeat profile of a current subject, the heartbeat profile being based on photoplethysmography (PPG) data associated with a set of wavelength channels. The device may determine a global model including a plurality of classes, each associated with a subject identifier and a blood pressure level (BPL) identifier. The device may identify a class as a closest class to the current subject based on the heartbeat profile of the current subject. The device may identify a local subject associated with the closest class based on the subject identifier associated with the closest class. The device may generate a BPL estimation model for the current subject based on heartbeat profile data for the local subject. The device may determine a BPL estimation for the current subject based on the heartbeat profile of the current subject and using the BPL estimation model.

公开(公告)号：US20200003679A1

公开(公告)日：2020-01-02

申请号：US16448914

申请日：2019-06-21

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：US20240068869A1

公开(公告)日：2024-02-29

申请号：US18503220

申请日：2023-11-07

Applicant: VIAVI Solutions Inc.

Inventor： Chang Meng HSIUNG ,  Lan SUN ,  Michael KLIMEK

IPC: G01J3/02

CPC classification number: G01J3/0275 ,  G01J2003/2833

Abstract: In some implementations, a device may identify, based on spectroscopic data, a pseudo steady state end point indicating an end of a pseudo steady state associated with the blending process. The device may identify a reference block and a test block from the spectroscopic data based on the pseudo steady state end point. The device may generate a raw detection signal associated with the reference block and a raw detection signal associated with the test block. The device may generate a statistical detection signal based on the raw detection signal associated with the reference block and the raw detection signal associated with the test block. The device may determine whether the blending process has reached a steady state based on the statistical detection signal.

公开(公告)号：US20230134192A1

公开(公告)日：2023-05-04

申请号：US18148450

申请日：2022-12-30

Applicant: VIAVI Solutions Inc.

Inventor： Nada A. O'BRIEN ,  Chang Meng HSIUNG

IPC: G01N33/12 ,  G06V30/242 ,  G06F18/211 ,  G06F18/2411 ,  G01N21/27

Abstract: A device may receive a classification model generated based on a set of spectroscopic measurements performed by a first spectrometer. The device may store the classification model in a data structure. The device may receive a spectroscopic measurement of an unknown sample from a second spectrometer. The device may obtain the classification model from the data structure. The device may classify the unknown sample into a Kosher or non-Kosher group or a Halal or non-Halal group based on the spectroscopic measurement and the classification model. The device may provide information identifying the unknown sample based on the classifying of the unknown sample.

公开(公告)号：US20220409076A1

公开(公告)日：2022-12-29

申请号：US17823083

申请日：2022-08-30

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：US20220248994A1

公开(公告)日：2022-08-11

申请号：US17661306

申请日：2022-04-29

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.