公开(公告)号：WO2015152921A8

公开(公告)日：2015-10-08

申请号：PCT/US2014/032805

申请日：2014-04-03

Applicant: APPLE INC.

Inventor： PARIKH, Chintan S. ,  CURTIS, Robert C. ,  NAKAJIMA, Taido, L. ,  ANDREWS, Jonathan, J. ,  ROTHKOPF, Fletcher R.

IPC: G01C22/00 ,  G01C25/00

Abstract: An electronic pedometer device can be calibrated using other pedometer devices that the user happens to be wearing. For example, a first pedometer can be incorporated into a device wearable on a first portion of a user's body (e.g., the wrist) while a second pedometer is incorporated into a device wearable on another portion of the user's body (e.g., the waist). The pedometer devices can communicate with each other to initiate a calibration period, during which data regarding measured accelerations, step count and/or user location is gathered. After the calibration period, one or both of the devices can use the data to compute calibration parameters, such as a conversion factor for converting a step count to distance and/or other parameters for converting measured accelerations to distance traveled.