US 12,324,659 B2
Information processing device, walking environment determination device, walking environment determination system, information processing method, and storage medium
Chenhui Huang, Tokyo (JP); and Kenichiro Fukushi, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 17/612,620
Filed by NEC Corporation, Tokyo (JP)
PCT Filed May 29, 2019, PCT No. PCT/JP2019/021424
§ 371(c)(1), (2) Date Nov. 19, 2021,
PCT Pub. No. WO2020/240753, PCT Pub. Date Dec. 3, 2020.
Prior Publication US 2022/0240812 A1, Aug. 4, 2022
Int. Cl. A61B 5/103 (2006.01); A61B 5/00 (2006.01); A61B 5/11 (2006.01)
CPC A61B 5/1038 (2013.01) [A61B 5/112 (2013.01); A61B 5/6807 (2013.01); A61B 5/7267 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An information processing device comprising:
a memory configured to store instructions; and
a processor configured to execute the instructions to:
acquire load information based on a load applied to a load sensor from a sole of a user; and
extract a feature amount indicating a walking environment from time series data in at least one walking cycle included in the load information,
wherein the feature amount is used to determine whether or not the walking environment of the user is level ground,
wherein the information processing device or the load sensor is operable in a first mode and a second mode, power consumption thereof in the second mode being smaller than that in the first mode,
wherein the information processing device or the load sensor operates in the first mode in a case where it is determined that the walking environment of the user is level ground, and
wherein the information processing device or the load sensor operates in the second mode in a case where it is determined that the walking environment of the user is not level ground.