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    Automatic detection of user's periods of sleep and sleep stage
    2.
    发明授权
    Automatic detection of user's periods of sleep and sleep stage 有权

    公开(公告)号：US10772539B2

    公开(公告)日：2020-09-15

    申请号：US16058423

    申请日：2018-08-08

    Applicant: Fitbit, Inc.

    Inventor： Jacob Antony Arnold ,  Subramaniam Venkatraman

    IPC: A61B5/00 ,  A61B5/11 ,  A61B5/0205 ,  A61B5/024 ,  A61B5/053 ,  A61B5/08

    Abstract: Aspects of automatically detecting periods of sleep of a user of a wearable electronic device are discussed herein. For example, in one aspect, an embodiment may obtain a set of features for periods of time from motion data obtained from a set of one or more motion sensors in the wearable electronic device or data derived therefrom. The wearable electronic device may then classify the periods of time into one of a plurality of statuses of the user based on the set of features determined for the periods of time, where the statuses are indicative of relative degree of movement of the user. The wearable electronic device may also derive blocks of time each covering one or more of the periods of time during which the user is in one of a plurality of states, wherein the states include an awake state and an asleep state.

    Automatic detection of user's periods of sleep and sleep stage
    3.
    发明授权
    Automatic detection of user's periods of sleep and sleep stage 有权

    公开(公告)号：US10092219B2

    公开(公告)日：2018-10-09

    申请号：US14877912

    申请日：2015-10-07

    Applicant: Fitbit, Inc.

    Inventor： Jacob Antony Arnold ,  Subramaniam Venkatraman

    IPC: A61B5/103 ,  A61B5/117 ,  G01C19/00 ,  A61B5/11 ,  A61B5/00 ,  A61B5/0205 ,  A61B5/024 ,  A61B5/053 ,  A61B5/08

    Abstract: Aspects of automatically detecting periods of sleep of a user of a wearable electronic device are discussed herein. For example, in one aspect, an embodiment may obtain a set of features for periods of time from motion data obtained from a set of one or more motion sensors in the wearable electronic device or data derived therefrom. The wearable electronic device may then classify the periods of time into one of a plurality of statuses of the user based on the set of features determined for the periods of time, where the statuses are indicative of relative degree of movement of the user. The wearable electronic device may also derive blocks of time each covering one or more of the periods of time during which the user is in one of a plurality of states, wherein the states include an awake state and an asleep state.

    Methods, Systems and Devices for Measuring Fingertip Heart Rate
    6.
    发明申请
    Methods, Systems and Devices for Measuring Fingertip Heart Rate 审中-公开
    测量指尖心率的方法，系统和设备

    公开(公告)号：US20150173628A1

    公开(公告)日：2015-06-25

    申请号：US14639409

    申请日：2015-03-05

    Applicant: Fitbit, Inc.

    Inventor： Shelten Yuen ,  Subramaniam Venkatraman ,  Eric Van Albert ,  James Park

    IPC: A61B5/0205 ,  A61B5/00 ,  A61B5/11

    CPC classification number: A61B5/0205 ,  A61B5/0022 ,  A61B5/0075 ,  A61B5/0082 ,  A61B5/02433 ,  A61B5/1112 ,  A61B5/1118 ,  A61B5/681 ,  A61B5/6826 ,  A61B5/6843 ,  A61B5/6885 ,  A61B5/721 ,  A61B5/7271 ,  A61B5/742 ,  A61B5/743 ,  A61B2503/10 ,  G16H40/67

    Abstract: A system and method of tracking activity includes a motion sensor, a light source and a light detector. The light detector is configured to capture an amount of the light that is reflected back to the light detector, at least a first portion of the light reflected back to the light detector is reflected from a blood vessel disposed under a skin of a user when the user places the skin over the heart rate monitor location on the housing. A processor is in communication with the motion sensor and the light detector and can process the reflected light to identify heart beats of the user and produce an indication of a heart rate. The indication of the heart rate can be displayed on the display screen as an option, in addition to the metrics that quantify the motion data.

    Abstract translation: 跟踪活动的系统和方法包括运动传感器，光源和光检测器。 光检测器被配置为捕获被反射回到光检测器的一定量的光，反射回到光检测器的光的至少第一部分从设置在用户皮肤下方的血管反射 用户将皮肤放置在外壳上的心率监测器位置上。 处理器与运动传感器和光检测器通信，并且可以处理反射光以识别用户的心脏跳动并产生心率的指示。 除了量化运动数据的度量之外，还可以在显示屏幕上显示心率的指示作为选项。

    System and method for characterizing cardiac arrhythmia
    9.
    发明授权
    System and method for characterizing cardiac arrhythmia 有权

    公开(公告)号：US11253202B1

    公开(公告)日：2022-02-22

    申请号：US16556891

    申请日：2019-08-30

    Applicant: Fitbit, Inc.

    Inventor： Conor Heneghan ,  Alexandros Pantelopoulos ,  Subramaniam Venkatraman

    IPC: A61B5/00 ,  A61B5/026 ,  A61B5/363

    Abstract: In an embodiment, a data processing method comprises obtaining one or more photoplethysmography (PPG) signals from one or more PPG sensors of a monitoring apparatus, the PPG signals being generated based upon optically detecting pulsed variations in blood flow; obtaining a motion sensor signal from a motion sensor in the monitoring apparatus; identifying, based upon the motion sensor signal, one or more periods of motion (e.g., low motion) of the monitoring apparatus; and selectively obtaining and storing segments of the PPG signals based on a temporal relationship between the segments of the PPG signals and the identified periods of motion.

    AUTOMATIC DETECTION OF USER'S PERIODS OF SLEEP AND SLEEP STAGE
    10.
    发明申请
    AUTOMATIC DETECTION OF USER'S PERIODS OF SLEEP AND SLEEP STAGE 有权

    公开(公告)号：US20210059571A1

    公开(公告)日：2021-03-04

    申请号：US16948207

    申请日：2020-09-08

    Applicant: Fitbit, Inc.

    Inventor： Jacob Antony Arnold ,  Subramaniam Venkatraman

    IPC: A61B5/11 ,  A61B5/00 ,  A61B5/0205

    Abstract: Aspects of automatically detecting periods of sleep of a user of a wearable electronic device are discussed herein. For example, in one aspect, an embodiment may obtain a set of features for periods of time from motion data obtained from a set of one or more motion sensors in the wearable electronic device or data derived therefrom. The wearable electronic device may then classify the periods of time into one of a plurality of statuses of the user based on the set of features determined for the periods of time, where the statuses are indicative of relative degree of movement of the user. The wearable electronic device may also derive blocks of time each covering one or more of the periods of time during which the user is in one of a plurality of states, wherein the states include an awake state and an asleep state.

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