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. 11, 2017
Filed:
Dec. 02, 2011
Yuta Masuda, Kawasaki, JP;
Yuta Masuda, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A consciousness level determination apparatus calculates a heart rate interval from a heart rate signal of a subject and calculates a spectral density of each frequency by performing a frequency analysis on the calculated heart rate interval. The apparatus extracts, at each predetermined timing, a combination of a maximum density that is a maximum, a maximum frequency that is a frequency corresponding to the maximum density, and a magnitude difference relation that represents a difference between the maximum density and spectrum densities which correspond to frequencies adjoined to the maximum frequency. The apparatus compares the combination with a combination extracted at a previous timing. The apparatus determines a consciousness level on the basis of a determination reference that is determined by using a result of the comparison.