Patent ID: 11943574
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An information processing method of an information processing system comprising a plurality of sensor terminals worn by a plurality of respective participants who participate in one communication and an information processing apparatus capable of communicating with the plurality of sensor terminals, wherein
each of the sensor terminals comprises:
a sensor configured to output sensing data regarding a participant who wears the sensor terminal;
a terminal clock unit; and
an oscillation circuit,

each of the sensor terminals corrects a terminal time of the terminal clock unit based on time data externally acquired,
each of the sensor terminals acquires the sensing data output from the sensor and terminal time data output from the terminal clock unit at a predetermined generation time interval counted based on an output signal of the oscillation circuit, and generates terminal data including the sensing data and the terminal time data,
each of the sensor terminals transmits the terminal data to the information processing apparatus,
the information processing apparatus stores a plurality of pieces of terminal data received from each of the sensor terminals,
the information processing apparatus corrects, for each of the sensor terminals, the terminal time data of the plurality of pieces of terminal data,
correcting the terminal time data of the plurality of pieces of terminal data comprises correcting the terminal time data of the plurality of pieces of terminal data in such a way that the intervals between the terminal time data of the plurality of pieces of terminal data become even on the time axis,
adding detection order data that is increased or decreased by a predetermined increase/decrease value in an order of a detection to the plurality of pieces of terminal data;
obtaining a linear regression equation between the terminal time data and the corresponding detection order data;
changing the terminal time data to a value obtained by substituting the corresponding detection order data into the linear regression equation; and
setting, when a difference between the terminal time data of one piece of terminal data and the terminal time data of a second piece of terminal data is longer than the generation time interval and is equal to or smaller than a second value and the first and the second pieces of terminal data being adjacent to each other in the order of detection, a third value as the detection order data to be added to the terminal data that comes later in the order of the detection, the third value obtained by dividing the difference by the generation time interval to yield a fourth value, multiplying the fourth value by the predetermined increase/decrease value to derive a fifth value, and adding a sixth value as the detection order data to be added to the terminal data that comes first in the order of detection.