Patents by Inventor Yasuyuki Ohiwa

Yasuyuki Ohiwa 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).

  • Patent number: 7221485
    Abstract: The present invention relates to a method for controlling an image scanner for reading images by moving an image sensor. Specifically, the present invention relates to a control method for detecting the boundary between a white region and a black region formed at a predetermined place in accordance with a signal output from the image sensor and determining the home position of the image sensor in accordance with the position of the boundary. Particularly, the present invention is an invention for providing a control method for preventing erroneous recognition due to influence of external light.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: May 22, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mitsuhiro Naito, Yasuyuki Ohiwa
  • Publication number: 20040223194
    Abstract: The present invention relates to a method for controlling an image scanner for reading images by moving an image sensor. Specifically, the present invention relates to a control method for detecting the boundary between a white region and a black region formed at a predetermined place in accordance with a signal output from the image sensor and determining the home position of the image sensor in accordance with the position of the boundary. Particularly, the present invention is an invention for providing a control method for preventing erroneous recognition due to influence of external light.
    Type: Application
    Filed: June 9, 2004
    Publication date: November 11, 2004
    Inventors: Mitsuhiro Naito, Yasuyuki Ohiwa
  • Patent number: 6765700
    Abstract: The present invention relates to a method for controlling an image scanner for reading images by moving an image sensor. Specifically, the present invention relates to a control method for detecting the boundary between a white region and a black region formed at a predetermined place in accordance with a signal output from the image sensor and determining the home position of the image sensor in accordance with the position of the boundary. Particularly, the present invention is an invention for providing a control method for preventing erroneous recognition due to influence of external light.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: July 20, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mitsuhiro Naito, Yasuyuki Ohiwa
  • Patent number: 5838368
    Abstract: In a camera control system, a video signal from a camera is displayed on a monitor with some delay. An operation signal from a joystick disposed on the side of the monitor is transmitted to a data comparison circuit through a transmission system, a control unit and a counter. A panning operation on the camera is performed through a motor by applying a driving signal from a panhead driving circuit according to a difference between the operation signal and panning position detection data from a panning position detector. After that, in response to a signal indicating a stop of operation on the joystick, the control unit sends delayed panning position detection data obtained from a data delay circuit to the data comparison circuit. The panned position of the camera is thus shifted back to the panning position indicated by the delayed data obtained when the panning operation is stopped. The tilting and zooming operations on the camera can be controlled also in the same manner.
    Type: Grant
    Filed: June 18, 1993
    Date of Patent: November 17, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Masunaga, Yasuyuki Ohiwa
  • Patent number: 5699113
    Abstract: According to this invention, an image processing apparatus which allows detailed observation of the point of interest upon zooming of a camera, includes an input unit (1000, 1002) for inputting image information, and an encoding unit (1003, 1004) for encoding the input image information.
    Type: Grant
    Filed: July 25, 1995
    Date of Patent: December 16, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuyuki Ohiwa