Patent ID: 11925458
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 7:
8. A system comprising:
at least one memory storing instructions, and
at least one processor configured to execute the instructions to:
acquire sensing information of a sensor attached to a target part of a body of a subject, the sensing information including quaternion information;
detect an attaching direction of the sensor with respect to a reference direction defined based on the target part, wherein the reference direction remains the same relative to the target part when a position of the sensor with respect to the target part changes, the reference direction defined as an axial direction of a band attached to the target part;
execute tagging processing for associating the attaching direction of the sensor with sensing-related information related to the sensing information, the sensing-related information including the sensing information and information obtained by converting the quaternion information into rotation angle information;
calculate a motion state of the target part based on the sensing-related information tagged with the attaching direction;
output the calculated motion state of the target part with an indication of relation to the attaching direction;
determine that an attaching direction changing event has occurred based on a difference of attaching directions measured before and after a predetermined timing; and
update the attaching direction of the sensor based on determining that the attaching direction changing event has occurred.