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:
Jun. 12, 2018
Filed:
Mar. 26, 2015
Pioneer Corporation, Tokyo, JP;
PIONEER CORPORATION, Tokyo, JP;
Abstract
A sleepiness calculation device is provided. In a smartphone, I/F obtains heart rate of the subject measured by a heartbeat sensor and measurement time, determines active state of a subject in the state discriminant section, and send it to a server. Next, in the server, a correction section obtains sleepiness baseline heart rate from a sleepiness baseline heart rate table storing sleepiness baseline heart rate of the subject for each active state according to an active state sent from the smartphone. Next, the sleepiness baseline heart rate obtained by the correction section is corrected based on fatigue degree, sleep time, and state of meals. Thereafter, the corrected sleepiness baseline heart rate (correction sleepiness baseline heart rate) is sent to the smartphone. Sleepiness level calculation section of the smartphone calculates sleepiness level of the subject based on correction sleepiness baseline heart rate and heart rate obtained by I/F.