Detecting a transient ischemic attack using photoplethysmogram signals

    公开(公告)号:US11064892B2

    公开(公告)日:2021-07-20

    申请号:US16689929

    申请日:2019-11-20

    Applicant: Facense Ltd.

    Abstract: Systems and methods for detecting an occurrence of a transient ischemic attack (TIA). In one embodiment, a device is utilized to measure first and second signals indicative of photoplethysmogram signals at first and second regions on the left and right sides of a user's head (PPGSL and PPGSR, respectively). A computer detects the occurrence of a TIA based on PPGSL and PPGSR that exhibit a pattern that involves the following: (i) an asymmetry between PPGSL and PPGSR, which is below a threshold, during a first period spanning more than a day; (ii) an asymmetry between PPGSL and PPGSR, which exceeds the threshold, during a second period following the first period and spanning between 5 and 180 minutes; and (iii) an asymmetry between PPGSL and PPGSR, which falls below the threshold, during a third period following the second period.

    Wearable inward-facing camera utilizing the Scheimpflug principle

    公开(公告)号:US10523852B2

    公开(公告)日:2019-12-31

    申请号:US15722434

    申请日:2017-10-02

    Applicant: Facense Ltd.

    Abstract: One aspect of this disclosure involves a wearable device that includes a frame that is worn on a user's head, and an inward-facing camera (camera) physically coupled to the frame. The optical axis of the camera is either above the Frankfort horizontal plane and pointed upward to capture an image of a region of interest (ROI) above the user's eyes, or the optical axis is below the Frankfort horizontal plane and pointed downward to capture an image of an ROI below the user's eyes. The camera includes a sensor and a lens. The sensor plane is tilted by more than 2° relative to the lens plane according to the Scheimpflug principle in order to capture a sharper image. The Scheimpflug principle is a geometric rule that describes the orientation of the plane of focus of a camera when the lens plane is tilted relative to the sensor plane.

    Detecting stress based on thermal measurements of the face

    公开(公告)号:US10299717B2

    公开(公告)日:2019-05-28

    申请号:US15832833

    申请日:2017-12-06

    Applicant: Facense Ltd.

    Abstract: Described herein are systems and methods for detecting a stress level of a user. In one embodiment, a system includes an inward-facing head-mounted thermal camera (CAM) and a computer. CAM takes thermal measurements of a region on a periorbital area (THROI1) of the user. The computer generates feature values based on THROI1, and utilizes a model to detect the stress level based on the feature values. The model was trained based on: previous THROI1 taken while the user was under elevated stress, and other previous THROI1 taken while the user was not under elevated stress. Some embodiments may utilize additional thermal cameras that take thermal measurements of other regions on the face, which may be utilized to detect the stress level.

    Virtual coaching based on respiration signals

    公开(公告)号:US20190038180A1

    公开(公告)日:2019-02-07

    申请号:US16156586

    申请日:2018-10-10

    Applicant: Facense Ltd.

    Abstract: Disclosed herein are embodiments of an athletic coaching system that includes at least one inward-facing head-mounted thermal camera (CAM) and a computer. Each CAM from among the at least one CAM is configured to take thermal measurements of a region below the nostrils (denoted THRBN) of a user. THRBN are indicative of an exhale stream of the user (e.g., an exhale stream from a nostril and/or from the mouth). The computer is configured to: receive measurements of movements (Mmove) involving the user; generate, based on THRBN and Mmove, a coaching indication; and present, via a user interface, the coaching indication to the user. In one example, the coaching indication is indicative of a change the user should make to one or more of the following: cadence of movements, stride length, breathing rate, breathing type (mouth or nasal), and duration of exhales.

    Smartglasses with bendable temples
    20.
    发明授权

    公开(公告)号:US11604367B2

    公开(公告)日:2023-03-14

    申请号:US17155812

    申请日:2021-01-22

    Applicant: Facense Ltd.

    Abstract: A novel design for untethered smartglasses with wireless connectivity in which electronic components and electric wiring are mounted in a manner than enables at least a portion of temples of the smartglasses to be bent around the ear to improve the smartglasses' fit. In one embodiment, the smartglasses include a front element that supports lenses and two temples, coupled to the front element through hinges that enable folding and unfolding. At least one of the temples includes: a first portion coupled to the front element with first electronic components, a second portion coupled to the first portion with electric wires, and a third portion coupled to the second portion with second electronic components. The second portion is designed to be bent around a human ear to improve the smartglasses' fit, and the first and third portions are not designed to be bent to improve the smartglasses' fit.

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