公开(公告)号：US12226187B2

公开(公告)日：2025-02-18

申请号：US18588846

申请日：2024-02-27

Applicant: HI LLC

Inventor： Ryan Field ,  Katherine Perdue ,  Hamid Dehghani

IPC: A61B5/00 ,  G01B11/14

Abstract: An optical measurement system includes a light source configured to emit a first light pulse and a second light pulse toward a target, a detector, and a processing unit. The first light pulse has a first wavelength and the second light pulse has a second wavelength different from the first wavelength. The processing unit is configured to determine a plurality of temporal distributions of photons included in the first light pulse and the second light pulse and detected by the detector after the photons are scattered by the target, and determine, based on the plurality of temporal distributions and a source-detector distance estimation model, a distance between the light source and the detector.

公开(公告)号：US12213765B2

公开(公告)日：2025-02-04

申请号：US18524743

申请日：2023-11-30

Applicant: HI LLC

Inventor： Sebastian Sorgenfrei ,  Ryan Field ,  Bruno Do Valle ,  Isai Olvera ,  Jacob Dahle ,  Husam Katnani

IPC: A61B5/00

Abstract: An illustrative optical measurement system includes a light source configured to emit light directed at a target, an array of photodetectors configured to detect photons of the light after the light is scattered by the target, and a processing unit configured to measure a noise level of a photodetector included in the array of photodetectors, the noise level comprising a dark count rate that measures a dark count divided by a time period, determine that the noise level meets a predetermined threshold comprising a dark count rate threshold, and prevent, based on the determining that the noise level meets the predetermined threshold, an output of the photodetector from being used in generating a histogram based on a temporal distribution of photons detected by the array of photodetectors, the preventing comprising switching the output to a monitoring circuit that monitors a characteristic of the optical measurement system separate from the photodetector.

公开(公告)号：US12147870B2

公开(公告)日：2024-11-19

申请号：US18126786

申请日：2023-03-27

Applicant: HI LLC

Inventor： Ryan Field ,  Jacob Dahle ,  Rong Jin ,  Bruno Do Valle ,  Sebastian Sorgenfrei

IPC: G06K7/10 ,  G02B27/01

Abstract: An illustrative system may include a TDC configured to monitor for an occurrence of a photodetector output pulse during a measurement time window that is within and shorter in duration than a light pulse time period, the photodetector output pulse generated by a photodetector when the photodetector detects a photon from a light pulse having a light pulse time period; a PLL circuit for the TDC and having a PLL feedback period defined by a reference clock, the PLL circuit configured to: output a plurality of fine phase signals and output one or more signals representative of a plurality of feedback divider states during the PLL feedback period; and a precision timing circuit configured to adjust, based on one or more of the fine phase signals and/or the feedback divider states, a temporal position of the measurement time window within the light pulse time period.

公开(公告)号：US12029558B2

公开(公告)日：2024-07-09

申请号：US17176560

申请日：2021-02-16

Applicant: HI LLC

Inventor： Husam Katnani ,  Katherine Perdue ,  Ryan Field ,  Isai Olvera

IPC: A61B5/1455 ,  A61B5/00 ,  A61B90/00 ,  A61B90/30

CPC classification number: A61B5/14553 ,  A61B5/6803 ,  A61B5/4088 ,  A61B2090/306 ,  A61B2090/3614 ,  A61B2562/0238

Abstract: A wearable module for use in an optical measurement system includes a light guide configured to receive a light pulse from a light source and guide signal photons included in the light pulse toward a target within a body of a user, and a light diverter configured to divert reference photons included in the light pulse toward at least one detector configured to detect the reference photons.

公开(公告)号：US20240164646A1

公开(公告)日：2024-05-23

申请号：US18511742

申请日：2023-11-16

Applicant: HI LLC

Inventor： Isai Olvera ,  Han Yong Ban ,  Dakota Blue Decker ,  Yaroslav Chekin ,  Joshua Schmidt ,  Ryan Field

IPC: A61B5/00

CPC classification number: A61B5/0075 ,  A61B5/0042 ,  A61B2562/0238 ,  A61B2562/046

Abstract: An illustrative optical measurement system may include a module comprising a light source configured to emit light directed at a target, a plurality of detectors configured to detect target photon arrival times of target photons of the light after the light is scattered by the target, and a reference detector configured to detect reference photon arrival times of reference photons of the light after the light is reflected within the module. The system may further include a controller configured to determine, based on an output from the reference detector, an instrument response function (IRF) of the module.

公开(公告)号：US20240099587A1

公开(公告)日：2024-03-28

申请号：US18524743

申请日：2023-11-30

Applicant: HI LLC

Inventor： Sebastian Sorgenfrei ,  Ryan Field ,  Bruno Do Valle ,  Isai Olvera ,  Jacob Dahle ,  Husam Katnani

IPC: A61B5/00

CPC classification number: A61B5/0082 ,  A61B5/4064 ,  A61B5/6803 ,  A61B5/7217 ,  A61B2560/0223 ,  A61B2560/0443 ,  A61B2562/046

Abstract: An illustrative optical measurement system includes a light source configured to emit light directed at a target, an array of photodetectors configured to detect photons of the light after the light is scattered by the target, and a processing unit configured to measure a noise level of a photodetector included in the array of photodetectors, the noise level comprising a dark count rate that measures a dark count divided by a time period, determine that the noise level meets a predetermined threshold comprising a dark count rate threshold, and prevent, based on the determining that the noise level meets the predetermined threshold, an output of the photodetector from being used in generating a histogram based on a temporal distribution of photons detected by the array of photodetectors, the preventing comprising switching the output to a monitoring circuit that monitors a characteristic of the optical measurement system separate from the photodetector.

公开(公告)号：US20240032798A1

公开(公告)日：2024-02-01

申请号：US18379516

申请日：2023-10-12

Applicant: HI LLC

Inventor： Rong Jin ,  Sebastian Sorgenfrei ,  Ryan Field ,  Bruno Do Valle ,  Jacob Dahle

IPC: A61B5/00

CPC classification number: A61B5/0082 ,  A61B5/0073 ,  A61B5/0075 ,  A61B5/4064 ,  A61B5/6803 ,  A61B2560/0214

Abstract: An illustrative optical measurement system includes a light source configured to emit light directed at a target. The optical measurement system further includes a photodetector configured to detect a photon of the light after the light is scattered by the target. The optical measurement system further includes a control circuit configured to receive a first input voltage that is a temperature-dependent voltage. The control circuit is further configured to receive a second input voltage that is a temperature-invariant voltage. The control circuit is further configured to output, based on a combination of the first input voltage and the second input voltage, a bias voltage for the photodetector, wherein the combination of the first and second input voltages is configured to cause the bias voltage to vary based on temperature.

公开(公告)号：US11593715B2

公开(公告)日：2023-02-28

申请号：US17408121

申请日：2021-08-20

Applicant: HI LLC

Inventor： Bryan Johnson ,  Ethan Pratt ,  Jamu Alford ,  Husam Katnani ,  Julian Kates-Harbeck ,  Ryan Field ,  Gabriel Lerner ,  Antonio H. Lara

IPC: G06F3/01 ,  G06N20/00 ,  A61B5/00 ,  G06K9/00 ,  G06N3/004 ,  G06N3/006 ,  G06N3/02 ,  G06N3/08 ,  G06Q30/0201 ,  A61B5/16 ,  G06Q30/0242

Abstract: A system for training a neurome that emulates a brain of a user comprises a non-invasive brain interface assembly configured for detecting neural activity of the user in response to analog instances of a plurality of stimuli peripherally input into the brain of the user from at least one source of content, memory configured for storing a neurome configured for outputting a plurality of determined brain states of an avatar in response to inputs of the digital instances of the plurality of stimuli, and a neurome training processor configured for determining a plurality of brain states of the user based on the detected neural activity of the user, and modifying the neurome based on the plurality of determined brain states of the user and the plurality of determined brain states of the avatar.

公开(公告)号：US11538954B2

公开(公告)日：2022-12-27

申请号：US17327438

申请日：2021-05-21

Applicant: HI LLC

Inventor： Bruno Do Valle ,  Ryan Field ,  Jacob Dahle ,  Rong Jin ,  Sebastian Sorgenfrei

IPC: H01L31/107 ,  H01L27/144 ,  H01L31/02

Abstract: An exemplary wearable brain interface system includes a head-mountable component and a control system. The head-mountable component includes an array of photodetectors that includes a photodetector comprising a single-photon avalanche diode (SPAD) and a fast-gating circuit configured to arm and disarm the SPAD. The control system is for controlling a current drawn by the array of photodetectors.

公开(公告)号：US20220274010A1

公开(公告)日：2022-09-01

申请号：US17668691

申请日：2022-02-10

Applicant: HI LLC

Inventor： Bryan Johnson ,  Ryan Field ,  Katherine Perdue

IPC: A63F13/212 ,  G06F3/01 ,  A63F13/69 ,  A61B5/291 ,  A61B5/16 ,  A61B5/024 ,  A61B5/053 ,  A61B5/00 ,  H01L31/107 ,  G01R33/26

Abstract: An illustrative system includes a brain interface system configured to be worn by a user and to output brain activity data representative of brain activity of the user while the user concurrently plays an electronic game and a computing device configured to obtain the brain activity data and modify, based on the brain activity data, an attribute of the electronic game.