Patents by Inventor Tatsuo Katagishi

Tatsuo Katagishi 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 apparatus
    Patent number: 5093655
    Abstract: A liquid-crystal display apparatus visually compensates the flickers of the entire face of the liquid-crystal panel through reversing the polarity of the picture signals in adjacent columns to be applied to drive the liquid-crystal panel with a plurality of display picture-elements. The polarity is reversed for each of the display picture element, of at least one or more adjacent within at least the same row, and/or for at least one horizontal scanning period or more.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: March 3, 1992
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Atsuyoshi Tanioka, Tatsuo Katagishi, Hajime Takesada