Patent ID: 11877861
Assignee: FITBIT, LLC
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A

Claim 9:
10. A system for labeling stages of sleep, the system comprising:
a plurality of sensors within a wrist-worn device;
one or more processors; and a non-transitory, machine-readable storage medium operatively coupled to the one or more processors and having stored therein instructions that, when executed, cause the one or more processors to perform operations, the operations including:
obtaining, via one or more sensors of the plurality of sensors, motion data for a user during a time window in which the user is asleep and wearing the wrist-worn device;
obtaining, via one or more sensors of the plurality of sensors, cardiopulmonary data for the user during the time window;
and processing the motion data and the cardiopulmonary data with a classifier model to generate a one or more labels,
each of the one or more labels generated for a corresponding time period within the time window,
each label indicating the user is awake or in one of a plurality of different stages of sleep during the corresponding time period,
extracting a first feature from the motion data for the user;
extracting a second feature from the cardiopulmonary data or from inter-beat intervals for the user,
wherein the second feature comprises at least one of a variability of a de-trended respiration rate, an inter-percentile spread of a heart rate, and a normalized de-trended heart rate,
and wherein the processing of the motion data and the cardiopulmonary data with the classifier model includes processing the first feature and the second feature to generate the one or more labels;
and displaying, on a graphical user interface, the one or more labels;
where the displaying of the one or more labels includes a graphic report of at least one time period and a label that correspond to the time period.