Patents by Inventor Hiroyoshi Kojima

Hiroyoshi Kojima 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).

  • Semiconductor device and video camera unit having the same and method for manufacturing the same
    Patent number: 5673083
    Abstract: A video camera unit is separated into a holder for receiving lenses and a base on which a solid-state image pickup chip is mounted. The holder and the base are assembled together with the distance between them made variable so that it is possible to adjust the back focus of the lens. Further, a video camera unit has a holder which is separated into a first holder for receiving lenses and a second holder for receiving a solid-state image pickup device so that both holders can be assembled together with the distance between them made variable. Therefore, it is also possible to adjust the back focus of the lens.
    Type: Grant
    Filed: January 31, 1995
    Date of Patent: September 30, 1997
    Assignees: Hitachi, Ltd., Echo Co., Ltd.
    Inventors: Akiya Izumi, Iwao Takemoto, Hiroichi Sokei, Masahiko Kadowaki, Takamasa Naito, Hiroyoshi Kojima, Atsumu Iguchi, Masaaki Yokoyama, Junichirou Nakajima, Masayuki Takahashi, Kunio Niwa
  • Damping force control system for automotive vehicle
    Patent number: 5642899
    Abstract: A damping force control system for an automotive vehicle having a semiactive damper mechanism provided between an unsprung mass and a sprung mass of the vehicle, wherein vertical velocity of the sprung mass is detected so that switchover of the semiactive damper mechanism from a low damping state to a high damping state is permitted upon lapse of a predetermined time after it has been detected that an absolute value of the detected vertical velocity of the sprung mass exceeded a preselected magnitude of approximate zero.
    Type: Grant
    Filed: August 8, 1995
    Date of Patent: July 1, 1997
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideo Inoue, Hajime Kamimae, Mitsuhiko Morita, Hiroyoshi Kojima
  • Method and apparatus for estimating disturbance acting on vehicle tired wheel based on wheel angular velocity and equation of state
    Patent number: 5531110
    Abstract: The invention is a method and apparatus wherein a disturbance acting on a tired wheel of a vehicle is estimated by a disturbance observer on the basis of the detected angular velocity of the wheel. In one form of the method, the wheel angular velocity is compensated for the disturbance, depending upon the amount of change of the wheel angular velocity caused by the disturbance. In another form of the method, the angular acceleration of the wheel as well as the disturbance is estimated by the observer, and the moment of inertia of the wheel is obtained according to a relationship between the estimated disturbance and angular acceleration of the wheel.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: July 2, 1996
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Hideki Ohashi, Hiroyuki Kawai, Hiroyoshi Kojima, Nobuo Hiraiwa, Katsuhiro Asano, Takaji Umeno, Toshimichi Takahashi
  • Video camera unit having an airtight mounting arrangement for an image sensor chip
    Patent number: 5400072
    Abstract: A video camera unit is separated into a holder for receiving lenses and a base on which a solid-state image pickup chip is mounted. The holder and the base are assembled together with the distance between them made variable so that it is possible to adjust the back focus of the lens. Further, a video camera unit has a holder which is separated into a first holder for receiving lenses and a second holder for receiving a solid-state image pickup device so that both holders can be assembled together with the distance between them made variable. Therefore, it is also possible to adjust the back focus of the lens.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: March 21, 1995
    Assignees: Hitachi, Ltd., Echo Co., Ltd.
    Inventors: Akiya Izumi, Iwao Takemoto, Hiroichi Sokei, Masahiko Kodowaki, Takamasa Naito, Hiroyoshi Kojima, Atsumu Iguchi, Masaaki Yokoyama, Junichirou Nakajima, Masayuki Takahashi, Kunio Niwa