Patents by Inventor Yutaka Kawafune

Yutaka Kawafune 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: 8303512
    Abstract: The present invention realizes calculating a pulse rate accurately, even when a body movement component has no periodical characteristics, by surely removing the body movement component generated in a living organism from a pulse wave component. A pulse wave detecting section includes a pulse wave sensor and outputs a pulse wave detection signal to an MPU functioning as a body motion component removing section. A body motion sensor outputs a body motion detection signal corresponding to a body motion that affects the behavior of venous blood to the MPU. As a result, to the MPU removes the body motion component from the pulse wave detection signal based on the body motion detection signal. A pulse rate calculating section calculates the pulse rate based on the pulse wave detection signal from which the body motion component has been removed. The pulse rate is displayed on a liquid crystal display device.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: November 6, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Tsukasa Kosuda, Makoto Zakoji, Ichiro Aoshima, Yutaka Kawafune, Norimitsu Baba
  • Patent number: 7722245
    Abstract: A display device has a frame having a substantially cylindrically shaped cylindrical part, a display panel that is band shaped and flexible, and a spacer that is substantially cylindrically shaped and is fit to the cylindrical part. The display panel is disposed to the outside surface of the spacer.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: May 25, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Norimitsu Baba, Yutaka Kawafune
  • Publication number: 20090005695
    Abstract: The present invention realizes calculating a pulse rate accurately, even when a body movement component has no periodical characteristics, by surely removing the body movement component generated in a living organism from a pulse wave component. A pulse wave detecting section includes a pulse wave sensor and outputs a pulse wave detection signal to an MPU functioning as a body motion component removing section. A body motion sensor outputs a body motion detection signal corresponding to a body motion that affects the behavior of venous blood to the MPU. As a result, to the MPU removes the body motion component from the pulse wave detection signal based on the body motion detection signal. A pulse rate calculating section calculates the pulse rate based on the pulse wave detection signal from which the body motion component has been removed. The pulse rate is displayed on a liquid crystal display device.
    Type: Application
    Filed: September 3, 2008
    Publication date: January 1, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tsukasa KOSUDA, Makoto ZAKOJI, Ichiro AOSHIMA, Yutaka KAWAFUNE, Norimitsu BABA
  • Publication number: 20080084657
    Abstract: A display device has a frame having a substantially cylindrically shaped cylindrical part, a display panel that is band shaped and flexible, and a spacer that is substantially cylindrically shaped and is fit to the cylindrical part. The display panel is disposed to the outside surface of the spacer.
    Type: Application
    Filed: September 21, 2007
    Publication date: April 10, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Norimitsu BABA, Yutaka KAWAFUNE
  • Patent number: 7212943
    Abstract: A body motion detection device is provided that is configured to be attached to a forearm of a user to detect a body motion of the human body to detect body motions of the user. The body motion detection device basically comprises a body motion sensor unit and a body motion component extracting section. The body motion sensor unit is configured and arranged to detect an acceleration caused substantially by a movement of the forearm during walking and an acceleration caused substantially by a movement of the forearm during running to output at least one body motion signal. The body motion component extracting section is configured and arranged to extract a body motion component from said at least one body motion signal. Thus, pitch of the user can be measured based on the body motion component both when the user is running and walking.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: May 1, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Ichiro Aoshima, Yutaka Kawafune
  • Publication number: 20040236233
    Abstract: In a pulse meter, a motion detector detects motion components generated along with changes in the shape of a mounting area on the body, and outputs a motion detection signal to a transmitter. A pulse wave detector detects pulse wave components and outputs a pulse wave detection signal to the transmitter. A pulse rate calculator calculates the pulse rate on the basis of the motion detection signal and the pulse wave detection signal. Motion components can be removed from pulse wave components and the pulse rate can be accurately calculated even when motion components with low acceleration are generated.
    Type: Application
    Filed: March 18, 2004
    Publication date: November 25, 2004
    Applicant: Seiko Epson Corporation
    Inventors: Tsukasa Kosuda, Yutaka Kawafune, Makoto Zakoji, Shoichi Nagao
  • Publication number: 20040186387
    Abstract: The present invention realizes calculating a pulse rate accurately, even when a body movement component has no periodical characteristics, by surely removing the body movement component generated in a living organism from a pulse wave component. A pulse wave detecting section includes a pulse wave sensor and outputs a pulse wave detection signal to an MPU functioning as a body motion component removing section. A body motion sensor outputs a body motion detection signal corresponding to a body motion that affects the behavior of venous blood to the MPU. As a result, to the MPU removes the body motion component from the pulse wave detection signal based on the body motion detection signal. A pulse rate calculating section calculates the pulse rate based on the pulse wave detection signal from which the body motion component has been removed. The pulse rate is displayed on a liquid crystal display device.
    Type: Application
    Filed: March 5, 2004
    Publication date: September 23, 2004
    Applicant: Seiko Epson Corporation
    Inventors: Tsukasa Kosuda, Makoto Zakoji, Ichiro Aoshima, Yutaka Kawafune, Norimitsu Baba
  • Publication number: 20040186695
    Abstract: A body motion detection device is provided that is configured to be attached to a forearm of a user to detect a body motion of the human body to detect body motions of the user. The body motion detection device basically comprises a body motion sensor unit and a body motion component extracting section. The body motion sensor unit is configured and arranged to detect an acceleration caused substantially by a movement of the forearm during walking and an acceleration caused substantially by a movement of the forearm during running to output at least one body motion signal. The body motion component extracting section is configured and arranged to extract a body motion component from said at least one body motion signal. Thus, pitch of the user can be measured based on the body motion component both when the user is running and walking.
    Type: Application
    Filed: March 3, 2004
    Publication date: September 23, 2004
    Applicant: Seiko Epson Corporation
    Inventors: Ichiro Aoshima, Yutaka Kawafune