公开(公告)号：US20180056128A1

公开(公告)日：2018-03-01

申请号：US15691245

申请日：2017-08-30

Applicant: Apple Inc.

Inventor： Bharath NARASIMHA RAO ,  Craig H. MERMEL ,  Karthik Jayaraman RAGHURAM ,  Hung A. PHAM ,  Adam S. HOWELL ,  Rami Y. HINDIYEH ,  James P. OCHS ,  Vinay R. MAJJIGI ,  Alexander SINGH ALVARADO ,  Sunny K. CHOW ,  Umamahesh SRINIVAS ,  Xing TAN ,  Ronald K. HUANG ,  Edith Merle ARNOLD ,  Robin T. GUERS ,  Gunes DERVISOGLU ,  Adeeti ULLAL

IPC: A63B24/00 ,  A61B5/11 ,  A61B5/024 ,  G01P15/14 ,  G01C22/00 ,  H04W4/02

CPC classification number: A63B24/0062 ,  A61B5/0205 ,  A61B5/02438 ,  A61B5/1112 ,  A61B5/1114 ,  A61B5/1118 ,  A61B5/1122 ,  A61B5/681 ,  A63B2024/0071 ,  G01C22/00 ,  G01C22/006 ,  G01P15/14 ,  G06K9/00342 ,  G06K9/6247 ,  G06K9/6269 ,  H04W4/027

Abstract: The present disclosure relates to methods and systems of determining swimming metrics of a user during a swimming session. The method can include receiving, by a processor circuit of a user device, motion information from one or more motion sensors of the user device; determining, by the processor circuit using the motion information, a first set of rotational data of the user device, wherein the first set of rotational data is expressed in a first frame of reference; converting, by the processor circuit, the first set of rotational data into a second set of rotational data, wherein the second set of rotational data is expressed in a second frame of reference; determining, by the processor circuit, one or more swimming metrics of the user; and outputting the one or more swimming metrics.