公开(公告)号：US12141011B1

公开(公告)日：2024-11-12

申请号：US17847962

申请日：2022-06-23

Applicant: Amazon Technologies, Inc.

Inventor： Vashishtha Rajendra Patil ,  John Hubberts ,  Dinesh Rajasenan Nair

IPC: G06F1/00 ,  A61B5/00 ,  G06F1/3231 ,  G06N5/022

Abstract: Described are systems, methods, and apparatus that utilize multiple sensors to conserve battery life of a device, limit potential disruption to a user, and reliably detect whether the device is worn by the user. In one example, a first sensor, such as an infrared sensor, may be activated to determine a proximity of the device to an object. If the device is within a proximity of the object, a second sensor, such as a photoplethysmography (PPG) sensor, may be activated to verify that the device is being worn by the user and then to continue collecting data that may be used to determine biometrics for the user.

公开(公告)号：US12020511B1

公开(公告)日：2024-06-25

申请号：US17487324

申请日：2021-09-28

Applicant: Amazon Technologies, Inc.

Inventor： Samuel Marc Denton ,  Steven Sensarn ,  Haithem Albadawi ,  Vashishtha Rajendra Patil ,  Feross Salameh ,  Chaitra Hegde

IPC: G06V40/20 ,  A63B24/00 ,  G01C22/00 ,  G06N20/00

CPC classification number: G06V40/25 ,  A63B24/0062 ,  G01C22/006 ,  G06N20/00 ,  A63B2024/0068 ,  A63B2024/0071 ,  A63B2220/17 ,  A63B2220/62

Abstract: Techniques for detecting user activity and repetitions (rep) counting are described. A system may dynamically determine a threshold value for counting reps. The threshold value may be based on an activity predicted by the system using sensor data. The threshold value may be based on a rep rate. Changes in the threshold value may enable more accurate rep counting when a user is performing an activity that involves taking reps, such as, walking, running, rowing bicycling, etc., and may further cease counting of reps when a user is performing an activity that does not involve taking repetitions but may result in sensor data that triggers rep counting.