公开(公告)号：US11937904B2

公开(公告)日：2024-03-26

申请号：US17016020

申请日：2020-09-09

Applicant: Apple Inc.

Inventor： James P. Ochs ,  Mariah W. Whitmore ,  Mark P. Sena ,  Julia K. Nichols ,  Erin Paeng ,  Vinay R. Majjigi ,  Karthik Jayaraman Raghuram ,  Hung A. Pham

IPC: A61B5/24 ,  A61B5/00 ,  A61B5/024 ,  A61B5/11

CPC classification number: A61B5/02438 ,  A61B5/02416 ,  A61B5/1118 ,  A61B5/6813 ,  A61B2562/0223

Abstract: Disclosed embodiments include wearable devices and techniques for detecting cardio machine activities, estimating user direction of travel, and monitoring performance during cardio machine activities. By accurately and promptly detecting cardio machine activities and automatically distinguishing between activities performed on different types of cardio machines, the disclosure enables wearable devices to accurately calculate user performance information when users forget to start and/or stop recording activities on a wide variety of cardio machines. In various embodiments, cardio machine activity detection techniques may use magnetic field data from a magnetic field sensor to improve the accuracy of orientation data and device heading measurements used to detect the end of a cardio machine activity.