US 11,653,858 B2
Running analysis device
Takehiro Aibara, Hamura (JP)
Assigned to Casio Computer Co., Ltd., Tokyo (JP)
Filed by CASIO COMPUTER CO., LTD., Tokyo (JP)
Filed on Mar. 23, 2020, as Appl. No. 16/827,617.
Claims priority of application No. JP2019-055833 (JP), filed on Mar. 25, 2019.
Prior Publication US 2020/0305764 A1, Oct. 1, 2020
Int. Cl. A61B 5/11 (2006.01); A61B 5/00 (2006.01); G01C 22/00 (2006.01)
CPC A61B 5/112 (2013.01) [A61B 5/6814 (2013.01); A61B 5/6822 (2013.01); A61B 5/7203 (2013.01); A61B 5/7278 (2013.01); G01C 22/006 (2013.01); A61B 2562/0219 (2013.01); A63B 2225/50 (2013.01)] 12 Claims
OG exemplary drawing
 
1. The claim is amended as follows:
A running analysis device comprising:
a processor: and
a memory that stores a program to be executed by the processor,
wherein, by executing the program, the processor performs:
an obtainment process by which first acceleration data on an acceleration in an up direction perpendicular to a moving direction of a subject and second acceleration data on an acceleration in a direction opposite to the moving direction of the subject are obtained from a motion sensor attached to a head or a neck of the subject and including an acceleration sensor, the first and second acceleration data being detected by the acceleration sensor while the subject is running;
a setting process by which a candidate time range including a candidate timing for a ground-contacting timing when a foot of the subject contacts ground is set based on the first acceleration data obtained by the obtainment process; and
an estimation process by which the ground-contacting timing of the subject is estimated in the candidate time range set by the setting process, based on a timing when the second acceleration data obtained by the obtainment process has a minimum value, wherein:
by the estimation process,
multiple periods of time corresponding to running speeds of the subject are determined for each running speed in advance, and the processor further performs:
a derivation process by which a running speed of the subject is derived, based on sensing data obtained from the motion sensor; and
a determination process by which a period of time corresponding to the running speed derived by the derivation process is determined from among the multiple periods of time, and
by the estimation process, the ground-contacting timing is estimated to be a timing of the determined period of time prior to the timing when the second acceleration data has the minimum value.