Patents by Inventor Katsuhiko OGATA

Katsuhiko OGATA 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).

  • System, method, and program for estimating reduced attention state, and storage medium storing the same program
    Patent number: 11062175
    Abstract: A reduced attention state estimation system includes an eyeball movement and eyelid activity measurement unit that measures an eyeball movement and an eyelid activity of a subject to obtain eyeball movement and eyelid activity data, a section determination unit that determines an eye opening section, an eye closing section, an eye-blinking section and a cluster section based on the eyeball movement and eyelid activity data, an eyeball movement and eyelid activity-related information calculation unit that calculates a sharpness of microsaccade or the like for each eye opening section based on the eyeball movement and eyelid activity data, and an attention assessment unit that determines an attention assessment or the like for an eye opening/cluster section, which is an eye opening section and cluster section, based on the sharpness of microsaccade or the like.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: July 13, 2021
    Assignees: Japan Aerospace Exploration Agency, National Center of Neurology and Psychiatry
    Inventors: Takashi Abe, Satoshi Furukawa, Katsuhiko Ogata, Kazuo Mishima, Shingo Kitamura
  • System, Method, and Program for Predicting Diminished Attentiveness State, and Storage Medium on Which Program Is Stored
    Publication number: 20200218935
    Abstract: A reduced attention state estimation system includes an eyeball movement and eyelid activity measurement unit that measures an eyeball movement and an eyelid activity of a subject to obtain eyeball movement and eyelid activity data, a section determination unit that determines an eye opening section, an eye closing section, an eye-blinking section and a cluster section based on the eyeball movement and eyelid activity data, an eyeball movement and eyelid activity-related information calculation unit that calculates a sharpness of microsaccade or the like for each eye opening section based on the eyeball movement and eyelid activity data, and an attention assessment unit that determines an attention assessment or the like for an eye opening/cluster section, which is an eye opening section and cluster section, based on the sharpness of microsaccade or the like.
    Type: Application
    Filed: November 22, 2017
    Publication date: July 9, 2020
    Inventors: Takashi Abe, Satoshi Furukawa, Katsuhiko Ogata, Kazuo Mishima, Shingo Kitamura
  • Storage apparatus, storage controller and method for relocating data in solid state drive
    Patent number: 9104554
    Abstract: According to one embodiment, a storage controller comprises an access statistic collection unit, a selection unit and a rewrite unit. The access statistic collection unit collects write frequencies of a plurality of small logical address areas having a predetermined size which configure a logical area of a logical unit defined using a solid state drive. The selection unit selects a set of first small logical address areas having low write frequencies from the logical unit. The rewrite unit collectively rewrites data of the set of the first small logical address areas to the solid state drive, and collectively rewrites data of a set of remaining second small logical address areas to the solid state drive.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: August 11, 2015
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA SOLUTIONS CORPORATION
    Inventor: Katsuhiko Ogata
  • STORAGE APPARATUS, STORAGE CONTROLLER AND METHOD FOR RELOCATING DATA IN SOLID STATE DRIVE
    Publication number: 20140289449
    Abstract: According to one embodiment, a storage controller comprises an access statistic collection unit, a selection unit and a rewrite unit. The access statistic collection unit collects write frequencies of a plurality of small logical address areas having a predetermined size which configure a logical area of a logical unit defined using a solid state drive. The selection unit selects a set of first small logical address areas having low write frequencies from the logical unit. The rewrite unit collectively rewrites data of the set of the first small logical address areas to the solid state drive, and collectively rewrites data of a set of remaining second small logical address areas to the solid state drive.
    Type: Application
    Filed: March 22, 2013
    Publication date: September 25, 2014
    Applicants: TOSHIBA SOLUTIONS CORPORATION, KABUSHIKI KAISHA TOSHIBA
    Inventor: Katsuhiko OGATA