Patents by Inventor Kaoru Imajo

Kaoru Imajo 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).

  • Patent number: 10620702
    Abstract: An internal device of a brain-machine interface system includes: an electrode group including N electrodes, N being 2 or more; an amplification element group including N amplification elements; a communicator communicating with an external device; and a controller selectively executing one of: a normal operation mode in which electroencephalogram signals acquired through the N electrodes are supplied to the amplification element group in a manner that each of the N electrodes corresponds to a respective one of the N amplification elements, and N amplified electroencephalogram signals are transmitted; and a noise-reduction operation mode in which an electroencephalogram signal acquired through an M electrode of the electrode group is supplied to the amplification element group in a manner that each M electrode corresponds to respective plural ones of the amplification elements, and an M amplified electroencephalogram signal is transmitted, M being smaller than N.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: April 14, 2020
    Assignees: NIHON KOHDEN CORPORATION, OSAKA UNIVERSITY, NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY
    Inventors: Kaoru Imajo, Katsuyoshi Suzuki, Masayuki Hirata, Seiji Kameda, Takafumi Suzuki, Hiroshi Ando
  • Publication number: 20200054284
    Abstract: An internal device (1) is implanted in a living body (300). A control section (6) causes a communication section (5) to wirelessly transmit data corresponding to electroencephalogram signals of the living body (300) which are detected through a group of N (N is 2 or more) electrodes, to an external device (200). When the communication section (5) receives a designation signal designating a group of M electrode(s) (2a), M being smaller than N, the communication section (5) is caused to transmit data corresponding to electroencephalogram signals of the living body (300) which are detected through the group of M electrode(s) (2a), to the external device (200) in real time.
    Type: Application
    Filed: February 9, 2018
    Publication date: February 20, 2020
    Applicants: NIHON KOHDEN CORPORATION, OSAKA UNIVERSITY, NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY, SPChange, LLC.
    Inventors: Kaoru IMAJO, Katsuyoshi SUZUKI, Masayuki HIRATA, Seiji KAMEDA, Takafumi SUZUKI, Hiroshi ANDO, Takatsugu KAMATA
  • Publication number: 20190192054
    Abstract: A peg (3) is placed on a peg board (2) by a subject. A detection unit (32) detects a contact state between a peg body (31) and a body portion of the subject. A signal transmission unit (33) transmits a signal indicative of a detection result from the detection unit (32).
    Type: Application
    Filed: August 21, 2017
    Publication date: June 27, 2019
    Applicants: NIHON KOHDEN CORPORATION, KEIO UNIVERSITY
    Inventors: Junichi USHIBA, Shohei TSUCHIMOTO, Meigen LIU, Michiyuki KAWAKAMI, Tatsuo YOSHIDA, Yoshinobu ONO, Yoshiyuki FUJITA, Kaoru IMAJO, Fumihiko MURAYAMA
  • Publication number: 20180132746
    Abstract: A headwear for electroencephalography is provided. The headwear includes a first arm to be attached to an area extending from a forehead or an occiput of a subject to a top of a head of the subject and configured to hold a first electroencephalogram electrode, a second arm connected to the first arm to be attached to a lateral side of the head of the subject and configured to hold a second electroencephalogram electrode, a third arm connected to the first arm to be attached to another lateral side of the head of the subject and configured to hold a third electroencephalogram electrode, a stretchable support member connectable to the first to third arms to cover at least a portion of the head in a direction toward the first arm, and at least one adjusting mechanism to adjust tightness of the first to third arms to the head.
    Type: Application
    Filed: May 16, 2016
    Publication date: May 17, 2018
    Applicant: NIHON KOHDEN CORPORATION
    Inventors: Kaoru IMAJO, Shogo SHIRASAKA, Yasushi OKITSU, Satoru UCHINUMA, Norihide SHIMIZU
  • Publication number: 20180120937
    Abstract: An internal device of a brain-machine interface system includes: an electrode group including N electrodes, N being 2 or more; an amplification element group including N amplification elements; a communicator communicating with an external device; and a controller selectively executing one of: a normal operation mode in which electroencephalogram signals acquired through the N electrodes are supplied to the amplification element group in a manner that each of the N electrodes corresponds to a respective one of the N amplification elements, and N amplified electroencephalogram signals are transmitted; and a noise-reduction operation mode in which an electroencephalogram signal acquired through an M electrode of the electrode group is supplied to the amplification element group in a manner that each M electrode corresponds to respective plural ones of the amplification elements, and an M amplified electroencephalogram signal is transmitted, M being smaller than N.
    Type: Application
    Filed: November 1, 2017
    Publication date: May 3, 2018
    Applicants: NIHON KOHDEN CORPORATION, OSAKA UNIVERSITY, NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIO NS TECHNOLOGY
    Inventors: Kaoru IMAJO, Katsuyoshi SUZUKI, Masayuki HIRATA, Seiji KAMEDA, Takafumi SUZUKI, Hiroshi ANDO
  • Publication number: 20180028089
    Abstract: An electroencephalogram electrode includes: a bottom portion on which a connection member is placed, the connection member which is configured to supply a biological signal that is acquired from a subject through conductive gel, to an external apparatus; an annular wall which annularly extends from the bottom portion in a contact direction with respect to the subject; and a plurality of barb members which are disposed in a holding space for the conductive gel that is located inside the annular wall, and which elongate from the bottom portion in the contact direction with respect to the subject.
    Type: Application
    Filed: February 15, 2016
    Publication date: February 1, 2018
    Applicant: NIHON KOHDEN CORPORATION
    Inventors: Shigehiro NISHIWAKI, Junji KURODA, Mitsushi HYOGO, Takayuki MOGI, Kaoru IMAJO, Satoru UCHINUMA
  • Patent number: 8731254
    Abstract: A biological signal drawing apparatus draws biological signals as drawing points in time series.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: May 20, 2014
    Assignee: Nihon Kohden Corporation
    Inventors: Yoshiaki Nakao, Kaoru Imajo
  • Publication number: 20100119130
    Abstract: A biological signal drawing apparatus draws biological signals as drawing points in time series.
    Type: Application
    Filed: November 5, 2009
    Publication date: May 13, 2010
    Applicant: NIHON KOHDEN CORPORATION
    Inventors: Yoshiaki NAKAO, Kaoru IMAJO
  • Patent number: 7460905
    Abstract: Each of a plurality of electroencephalographs is adapted to measure electroencephalograms of a patient and to be connected to a communication network. Each of the electroencephalographs is operable to analyze the electroencephalograms to generate electroencephalogram information. Each of a plurality of cameras is adapted to monitor a state that the patient is subjected to the electroencephalogram measurement to transmit the monitored state as image information to associated one of the electroencephalographs. A central control monitor is connected to the communication network and operable to simultaneously displaying the electroencephalogram information and a part of the image information which are transmitted from each of the electroencephalographs via the communication network.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: December 2, 2008
    Assignee: Nihon Kohden Corporation
    Inventors: Ryuzo Mase, Xiangji Li, Kaoru Imajo
  • Patent number: 7336991
    Abstract: A system for performing telemetry of multi-channel biological signals obtained from electrodes attached to a subject, is provided with a transmitter and a receiver. In the transmitter, a converter converts the multi-channel biological signals to digital data, and a storage stores the digital data. In the transmitter, a first transceiver is operable to transmit a prescribed amount of the digital data stored in the storage, and a battery is operable to supply a battery voltage to the first transceiver. In the transmitter, a switch places the battery in either a first state where the battery voltage is supplied to the first transceiver or a second state where the battery voltage is not supplied to the first transceiver, so that the first transceiver intermittently transmits the digital data. In the receiver, a second transceiver is operable to receive the digital data transmitted from the first transceiver. The received digital data is to be reproduced multi-channel biological signals at an output device.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: February 26, 2008
    Assignee: Nihon Kohden Corporation
    Inventors: Kazuteru Yanagihara, Takahisa Ishikawa, Kaoru Imajo
  • Patent number: 7292709
    Abstract: A plurality of nodes are connected to a network. A first node converts the image signals into image signal data and transmits the same. A second node converts the biological signals into biological signal data and transmits the same. A third node receives the image signal data and the biological signal data. A master counter is provided in one of the nodes to provide a reference count. A first counter in the first node appends a first count to the image signal data. A second counter in the second node appends a second count to the biological signal data. At least one of the first and second counters issues a query to the master counter to receive the reference count as a response. At least one of the first and the second counts is corrected, based on the reference count and a time period from the issuance of the query to the receipt of the response, so as to synchronous with the reference count.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: November 6, 2007
    Assignee: Nihon Kohden Corporation
    Inventor: Kaoru Imajo
  • Publication number: 20060161072
    Abstract: Each of a plurality of electroencephalographs is adapted to measure electroencephalograms of a patient and to be connected to a communication network. Each of the electroencephalographs is operable to analyze the electroencephalograms to generate electroencephalogram information. Each of a plurality of cameras is adapted to monitor a state that the patient is subjected to the electroencephalogram measurement to transmit the monitored state as image information to associated one of the electroencephalographs. A central control monitor is connected to the communication network and operable to simultaneously displaying the electroencephalogram information and a part of the image information which are transmitted from each of the electroencephalographs via the communication network.
    Type: Application
    Filed: January 12, 2006
    Publication date: July 20, 2006
    Inventors: Ryuzo Mase, Xiangji Li, Kaoru Imajo
  • Publication number: 20050085872
    Abstract: A system for performing telemetry of multi-channel biological signals obtained from electrodes attached to a subject, is provided with a transmitter and a receiver. In the transmitter, a converter converts the multi-channel biological signals to digital data, and a storage stores the digital data. In the transmitter, a first transceiver is operable to transmit a prescribed amount of the digital data stored in the storage, and a battery is operable to supply a battery voltage to the first transceiver. In the transmitter, a switch places the battery in either a first state where the battery voltage is supplied to the first transceiver or a second state where the battery voltage is not supplied to the first transceiver, so that the first transceiver intermittently transmits the digital data. In the receiver, a second transceiver is operable to receive the digital data transmitted from the first transceiver. The received digital data is to be reproduced multi-channel biological signals at an output device.
    Type: Application
    Filed: September 24, 2004
    Publication date: April 21, 2005
    Inventors: Kazuteru Yanagihara, Takahisa Ishikawa, Kaoru Imajo
  • Publication number: 20040263353
    Abstract: A plurality of nodes are connected to a network. A first node converts the image signals into image signal data and transmits the same. A second node converts the biological signals into biological signal data and transmits the same. A third node receives the image signal data and the biological signal data. A master counter is provided in one of the nodes to provide a reference count. A first counter in the first node appends a first count to the image signal data. A second counter in the second node appends a second count to the biological signal data. At least one of the first and second counters issues a query to the master counter to receive the reference count as a response. At least one of the first and the second counts is corrected, based on the reference count and a time period from the issuance of the query to the receipt of the response, so as to synchronous with the reference count.
    Type: Application
    Filed: June 25, 2004
    Publication date: December 30, 2004
    Applicant: NIHON KOHDEN CORPORATION
    Inventor: Kaoru Imajo