Patents by Inventor Noriaki Minamide

Noriaki Minamide 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).

  • Control method and apparatus for positioning servo system
    Patent number: 4703242
    Abstract: A magnetic disc head positioning system using a stepper motor eliminates positioning errors due to different approach directions and distances to a target track position through a drive control of temporarily stopping the head at a position immediately preceding or following the target track depending on the approach direction and, thereafter, moving the head from this position to the target track with a constant transient response. The head is brought to the temporary stop position by utilizing the overshooting response of the stepper motor so as to minimize the positioning time.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: October 27, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Kiyotake Kumazawa, Noriaki Minamide, Yoshihiro Moribe, Mikio Takahashi, Osamu Beppu, Masahiro Mitamura