Patents by Inventor Masahisa TAKASAKI

Masahisa TAKASAKI 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).

  • Calibrator, encoder, driving device, stage device, robot, encoder manufacturing method, and calibration program
    Patent number: 11579001
    Abstract: A calibrator includes: a position calculator which calculates a relative position between a first detector and a second detector on the basis of detection signals acquired respectively from the first detector, the second detector, and a third detector positioned with respect to a scale attached to a rotating body; and an error calculator which calculates error information on rotational position information of the rotating body on the basis of the relative position calculated by the position calculator as well as the detection signals.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: February 14, 2023
    Assignee: NIKON CORPORATION
    Inventors: Akihiro Watanabe, Masahisa Takasaki
  • CALIBRATOR, ENCODER, DRIVING DEVICE, STAGE DEVICE, ROBOT, ENCODER MANUFACTURING METHOD, AND CALIBRATION PROGRAM
    Publication number: 20200370927
    Abstract: A calibrator includes: a position calculator which calculates a relative position between a first detector and a second detector on the basis of detection signals acquired respectively from the first detector, the second detector, and a third detector positioned with respect to a scale attached to a rotating body; and an error calculator which calculates error information on rotational position information of the rotating body on the basis of the relative position calculated by the position calculator as well as the detection signals.
    Type: Application
    Filed: July 12, 2018
    Publication date: November 26, 2020
    Applicant: Nikon Corporation
    Inventors: Akihiro WATANABE, Masahisa TAKASAKI