公开(公告)号：US20240159564A1

公开(公告)日：2024-05-16

申请号：US18283571

申请日：2022-02-02

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Shuto OIKAWA ,  Susumu YAMAZAKI ,  Yohei KAWAGUCHI ,  Takeshi MIYAKE ,  Tatsuyoshi OMURA

IPC: G01C22/00 ,  G01P15/00

CPC classification number: G01C22/006 ,  G01P15/00

Abstract: An information processing device includes, at least one processor that derives frequency characteristics of time-series data of a measurement result by an acceleration sensor and determines whether the time-series data indicates a running/walking state in accordance with whether all determination conditions including at least a first condition and a second condition are satisfied, the first condition being a condition that a frequency having maximum intensity in the derived frequency characteristics is equal to or higher than a lower limit frequency set in advance, and the second condition being a condition that at least one of the frequency having the maximum intensity or a frequency having second largest intensity in the frequency characteristics falls within a range equal to or higher than the lower limit frequency and equal to or lower than an upper limit frequency set in advance.

公开(公告)号：US20200300929A1

公开(公告)日：2020-09-24

申请号：US16820832

申请日：2020-03-17

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Tatsuyoshi OMURA ,  Susumu YAMAZAKI ,  Mitsuaki MATSUO

IPC: G01R33/00 ,  G06F1/16 ,  G04G5/00 ,  G04G99/00 ,  G04G21/02

Abstract: Power consumption due to failed automatic calibration is suppressed. An electronic watch is provided with a magnetic sensor, a processor for performing calibration of the magnetic sensor and controlling two or more function modes, and an acceleration sensor for sensing movement of a user. The processor determines whether a state of movement sensed by the acceleration sensor is a calibratable state in which calibration of the magnetic sensor can be performed, performs discrimination of a function mode being executed among the two or more function modes, and performs the calibration of the magnetic sensor when (i) the state of movement sensed by the acceleration sensor is the calibratable state and (ii) the function mode is not a non-default mode, the non-default mode being a function mode executed in accordance with an operation by the user.