Patents by Inventor Katsue Ueda

Katsue Ueda 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).

  • Liquid crystal display with photodetectors having polarizing plates mounted thereon and its correcting method
    Publication number: 20060181673
    Abstract: The quantity of light from a backlight is monitored by a first photodetector, and the environment on the part of a user is monitored by a second photodetector disposed in the rear of a liquid crystal panel, not on the front thereof. It is possible to exclude the influence of external light from the user side on the first photodetector which detects the quantity of light from the backlight.
    Type: Application
    Filed: March 30, 2006
    Publication date: August 17, 2006
    Applicant: Eizo Nanao Corporation
    Inventors: Mitsuo Ohashi, Katsue Ueda
  • Liquid crystal display with photodetectors having polarizing plates mounted thereon and its correcting method
    Patent number: 7068333
    Abstract: The quantity of light from a backlight is monitored by a first photodetector, and the environment on the part of a user is monitored by a second photodetector disposed in the rear of a liquid crystal panel, not on the front thereof. It is possible to exclude the influence of external light from the user side on the first photodetector which detects the quantity of light from the backlight.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: June 27, 2006
    Assignee: Eizo Nanao Corporation
    Inventors: Mitsuo Ohashi, Katsue Ueda
  • Two-dimensional monochrome bit face display
    Patent number: 6961040
    Abstract: A two-dimensional monochrome bit face display has a luminance resolution that is equal to or higher than that of a CRT monitor. In one implementation, a two-dimensional monochrome bit face display has a bit face in which each pixel is constituted by m sub-pixels and neutral density filters mounted on the m sub-pixels of a respective pixel have light transmittances proportional to values ½n where n is an integer. In another implementation, mask filters are mounted on the m sub-pixels and have windows with light transmittances that are proportional to values ½n. Alternatively, areas of the m sub-pixels are set in the same proportion. The luminance of each sub-pixel is electronically controlled to improve the luminance resolution of the bit face display.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: November 1, 2005
    Assignee: Eizo Nanao Corporation
    Inventors: Mitsuo Ohashi, Fumio Kawaguchi, Katsue Ueda, Motohiro Kurisu
  • Liquid crystal display and its correcting method
    Publication number: 20040246434
    Abstract: The quantity of light from a backlight is monitored by a first photodetector, and the environment on the part of a user is monitored by a second photodetector disposed in the rear of a liquid crystal panel, not on the front thereof. It is possible to exclude the influence of external light from the user side on the first photodetector which detects the quantity of light from the backlight.
    Type: Application
    Filed: April 14, 2004
    Publication date: December 9, 2004
    Inventors: Mitsuo Ohashi, Katsue Ueda
  • Two-dimensional monochrome bit face display
    Publication number: 20030071775
    Abstract: A two-dimensional monochrome bit face display has a luminance resolution that is equal to or higher than that of a CRT monitor. In one implementation, a two-dimensional monochrome bit face display has a bit face in which each pixel is constituted by m sub-pixels and neutral density filters mounted on the m sub-pixels of a respective pixel have light transmittances proportional to values ½n where n is an integer. In another implementation, mask filters are mounted on the m sub-pixels and have windows with light transmittances that are proportional to values ½n. Alternatively, areas of the m sub-pixels are set in the same proportion. The luminance of each sub-pixel is electronically controlled to improve the luminance resolution of the bit face display.
    Type: Application
    Filed: April 19, 2002
    Publication date: April 17, 2003
    Inventors: Mitsuo Ohashi, Fumio Kawaguchi, Katsue Ueda, Motohiro Kurisu