Patents Assigned to Jpan Agency for Marine-Earth Science and Technology
  • Publication number: 20150054653
    Abstract: A transmission apparatus is a transmission apparatus that generates a pressure wave for transmitting data in drilling mud, and includes a tubular member, a plurality of valves that are provided side by side in an axial direction of the tubular member inside the tubular member, each of which includes a stator including holes for passing the drilling mud, and a rotatable rotor which is provided to overlap the stator and includes blocking portions blocking the holes in the stator according to a rotation position, a motor that rotates the respective rotors, and a control unit that controls the motor 130 so as to rotate and stop the respective rotors at frequencies different from each other, according to data to be transmitted.
    Type: Application
    Filed: April 3, 2013
    Publication date: February 26, 2015
    Applicant: Jpan Agency for Marine-Earth Science and Technology
    Inventors: Yuichi Shinmoto, Junya Ishiwata, Tsuyoshi Miyazaki