Patents by Inventor Hideki Ohtsuki

Hideki Ohtsuki 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).

  • Magnification alteration processing method which accords with types of image data and image processing apparatus which uses the method
    Patent number: 7212238
    Abstract: A device for outputting video signal includes a magnification alteration processing section that alters the magnification of image data expanded in frame memory in such a manner that the number of pixels in the frame memory and the number of pixels of the display area of a display section are equal. The device further includes a control section for deciding whether or not the magnification alteration processing of the image data by the magnification alteration processing section is to be executed when the image data is being converted into video signals.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: May 1, 2007
    Assignee: Ricoh Company, Ltd.
    Inventor: Hideki Ohtsuki
  • Method of and device for outputting video signal, and computer product
    Publication number: 20020027615
    Abstract: The device for outputting video signal includes a magnification alteration processing section that alters the magnification of image data expanded in frame memory in such a manner that the number of pixels in said frame memory and the number of pixels of the display area of a display section are equal. Furthermore, there is provided a control section that performing control so as to decide whether or not the magnification alteration processing of the image data by the magnification alteration processing section is to be executed when the image data is being converted into video signals.
    Type: Application
    Filed: September 4, 2001
    Publication date: March 7, 2002
    Applicant: RICOH COMPANY, LIMITED
    Inventor: Hideki Ohtsuki
  • Ink jet recording apparatus
    Patent number: 5754202
    Abstract: An ink jet recording apparatus includes a recording head for ejecting droplets of ink and a driving circuit for driving the recording head. The recording head includes a base, a plate on which a plurality of openings are formed; an ink chamber to be filled with ink being formed between the base and the plate; and heater elements, provided in the ink chamber so as to face the openings of the plate, each of which heater elements supplies heat energy to ink adjacent thereto so that the air bubble is generated on each of the heater elements and so that the air bubble grows toward a corresponding one of the openings. An area of each of the openings of the plate is greater than an area each of the heater elements. When the driving circuit activates each of the heater elements, a droplet of ink is ejected due to the air bubble from the corresponding one of the openings of the plate.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: May 19, 1998
    Assignee: Ricoh Company, Ltd.
    Inventors: Takuro Sekiya, Takayuki Yamaguchi, Mitsuru Shingyouchi, Makoto Obu, Michio Umezawa, Tetsuro Hirota, Takesada Hirose, Hideki Ohtsuki, Toshihiro Takesue