US 12,474,480 B2
Information processing device, behavior analysis system, behavior analysis method, and storage medium
Naoto Toda, Tokyo (JP); Ryuji Shingyoji, Tokyo (JP); and Nobuyoshi Nishizaka, Tokyo (JP)
Assigned to CASIO COMPUTER CO., LTD., Tokyo (JP)
Appl. No. 17/911,982
Filed by CASIO COMPUTER CO., LTD., Tokyo (JP)
PCT Filed Feb. 3, 2021, PCT No. PCT/JP2021/003838
§ 371(c)(1), (2) Date Sep. 15, 2022,
PCT Pub. No. WO2021/186930, PCT Pub. Date Sep. 23, 2021.
Claims priority of application No. 2020-048694 (JP), filed on Mar. 19, 2020.
Prior Publication US 2023/0184960 A1, Jun. 15, 2023
Int. Cl. G01S 19/25 (2010.01)
CPC G01S 19/258 (2013.01) 19 Claims
OG exemplary drawing
 
1. An information processing device comprising:
at least one processor that executes a program stored in a memory; and
storage;
wherein the processor is configured to execute processing including:
communicating with a communication device configured to download a prediction ephemeris from an external device, and instructing the communication device to download the prediction ephemeris from the external device;
acquiring the prediction ephemeris from the communication device;
determining a current position using the prediction ephemeris acquired from the communication device and storing position information indicating the current position in the storage; and
repeating, at intervals:
(i) acquiring, from the communication device, communication device position information indicating a position of the communication device;
(ii) updating the position information stored in the storage based on the communication device position information;
(iii) comparing the position information stored in the storage before the updating with the acquired communication device position information, and determining whether a discrepancy between the position information stored in the storage before the updating and the acquired communication device position information is larger than a predetermined threshold; and
(iv) making next and subsequent intervals at which the communication device position information is acquired shorter than a current interval in response to a determination that the discrepancy between the position information stored in the storage before the updating and the acquired communication device position information is larger than a predetermined threshold.