Patents by Inventor Genki Tabata

Genki Tabata has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Sleepiness assessment apparatus
    Patent number: 8979761
    Abstract: A sleepiness assessment value P1 is set to be an average heart rate HR (S130). A sleepiness assessment value P2 is set to be a standard deviation ? of a respiration interval RespI for one minute (S150). A sleepiness assessment value P3 is set to be a value that is obtained by dividing, by one minute, an integrated value of a square of an average heartbeat interval RRIavg in a case where a variation in which a heartbeat interval RRI increases occurs (in a case where an RRI count value Xi is a value of one) (S190). A sleepiness assessment value P4 is set to a value that is obtained by averaging a variation ratio in a case where a variation in which the respiration interval RespI increases occurs (in a case where an RRI count value Yi is a value of one) (S210).
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: March 17, 2015
    Assignee: Nagoya City University
    Inventors: Kiyoko Yokoyama, Issei Takahashi, Hayato Ohashi, Genki Tabata
  • SLEEPINESS ASSESSMENT APPARATUS
    Publication number: 20120078122
    Abstract: A sleepiness assessment value P1 is set to be an average heart rate HR (S130). A sleepiness assessment value P2 is set to be a standard deviation ? of a respiration interval RespI for one minute (S150). A sleepiness assessment value P3 is set to be a value that is obtained by dividing, by one minute, an integrated value of a square of an average heartbeat interval RRIavg in a case where a variation in which a heartbeat interval RRI increases occurs (in a case where an RRI count value Xi is a value of one) (S190). A sleepiness assessment value P4 is set to a value that is obtained by averaging a variation ratio in a case where a variation in which the respiration interval RespI increases occurs (in a case where an RRI count value Yi is a value of one) (S210).
    Type: Application
    Filed: May 26, 2010
    Publication date: March 29, 2012
    Applicant: NAGOYA CITY UNIVERSITY
    Inventors: Kiyoko Yokoyama, Issei Takahashi, Hayato Ohashi, Genki Tabata