Patents by Inventor Kuniyoshi Takeuchi

Kuniyoshi Takeuchi 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).

  • Height measuring apparatus and method and testing apparatus using the height measuring apparatus
    Patent number: 6330066
    Abstract: An imaging means, which is provided so as to be movable in a Z direction that is perpendicular to an object, images the object. A moving means moves the imaging means in the Z direction with adjustment. A control means measures a height of the object by causing the imaging means to image the object while causing the moving means to move the imaging means in the Z direction by a very small distance at a time, calculates focus values through image processing based on respective imaged pictures, and detects a focus position from a Z-direction variation of the focus values.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: December 11, 2001
    Assignee: Sony Corporation
    Inventors: Minoru Tanaka, Kuniyoshi Takeuchi
  • Inspecting method and inspecting apparatus for liquid crystal display panel whereby the cell gap is inspected
    Patent number: 6064462
    Abstract: The invention has an object of automating the inspection of cell-gaps of a liquid crystal display panel. An RGB image formed on the surface of a liquid crystal display panel (15) to be inspected is picked up with a CCD camera (17), and color non-uniformity is analyzed by an image processing unit (18), thereby to inspect the non-uniformity of the cell-gap.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: May 16, 2000
    Assignee: Sony Corporation
    Inventors: Kuniyoshi Takeuchi, Yasunori Sato