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:
Jul. 01, 2014
Filed:
Jan. 04, 2012
Yasuhiko Nakano, Kawasaki, JP;
Yasuhiko Nakano, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A wakeful-state data generating apparatus includes at least one processor and at least one storage device, the at least one storage device configured to; store a first correlation between value of variation in heartbeat interval and maximum spectral density, and store a second correlation between heartbeat rate and wakeful-state maximum frequency, the at least one processor configured to; calculate a value of variation in heartbeat interval from a heartbeat signal of a subject, estimate a wakeful-state maximum spectral density of the subject, on the basis of the first correlation and the calculated value of variation, calculate a heartbeat rate from the heartbeat signal, estimate a wakeful-state maximum frequency of the subject, on the basis of the second correlation and the calculated heartbeat rate, and generate wakeful-state data including the estimated wakeful-state maximum spectral density and the estimated wakeful-state maximum frequency.