Patents by Inventor Yuma NAGAKAWA

Yuma NAGAKAWA 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).

  • Motion analyzing device
    Patent number: 11382533
    Abstract: A motion analyzing device includes a myogenic potential measuring unit (20) and a myogenic potential measurement processor (101) to measure the muscle activity of a person who performs a motion and a motion measuring unit (30) and a position measurement processor (102) to measure the body motion. The motion analyzing device also includes an AA muscle co-activation ratio calculating unit (103), a muscle synergy calculating unit (104) and an equilibrium point calculating unit (105) to calculate an equilibrium point of the person and a muscle synergy that is a set of base vectors describing the equilibrium point based on a musculoskeletal model of the person and a constraint condition that the position of the endpoint of the limb matches the position of the equilibrium point in a static situation to keep a posture still under gravity compensation.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: July 12, 2022
    Assignee: Osaka University
    Inventors: Hiroaki Hirai, Fumiaki Yoshikawa, Eichi Watanabe, Yuma Nagakawa, Akira Kuroiwa, Mitsunori Uemura, Fumio Miyazaki
  • MOTION ANALYZING DEVICE, MOTION ANALYZING METHOD, AND RECORDING MEDIUM
    Publication number: 20210290108
    Abstract: A motion analyzing device includes a myogenic potential measuring unit (20) and a myogenic potential measurement processor (101) to measure the muscle activity of a person who performs a motion and a motion measuring unit (30) and a position measurement processor (102) to measure the body motion. The motion analyzing device also includes an AA muscle co-activation ratio calculating unit (103), a muscle synergy calculating unit (104) and an equilibrium point calculating unit (105) to calculate an equilibrium point of the person and a muscle synergy that is a set of base vectors describing the equilibrium point based on a musculoskeletal model of the person and a constraint condition that the position of the endpoint of the limb matches the position of the equilibrium point in a static situation to keep a posture still under gravity compensation.
    Type: Application
    Filed: September 6, 2017
    Publication date: September 23, 2021
    Inventors: Hiroaki HIRAI, Fumiaki YOSHIKAWA, Eichi WATANABE, Yuma NAGAKAWA, Akira KUROIWA, Mitsunori UEMURA, Fumio MIYAZAKI