The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 03, 2019
Filed:
Sep. 13, 2016
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A drowsiness detection device includes a memory; and a processor coupled to the memory and the processor configured to calculate a respiration variation period based on heartbeat interval data which is generated based on data that is obtained from a heartbeat sensor; predict a subsequent period structure of the respiration variation based on the calculated respiration variation period; determine whether or not an abnormal signal is mixed in the heartbeat interval data by comparing the heartbeat interval data during sequential update and the predicted subsequent period structure; and replace the respiration variation period which corresponds to the heartbeat interval data that includes the abnormal signal with the predicted subsequent period structure in a case where it is determined that the abnormal signal is mixed.