Patents by Inventor Katumi Tanaka

Katumi Tanaka 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).

  • Machine translation system and method of machine translation
    Patent number: 5088038
    Abstract: A machine translation system capable of obtaining a consistent translation for an entire document by taking context into account in translating each word or sentence. In this system, document information necessary to remove uncertainty in the translation due to a presence of a plurality of candidates for the translation is utilized whenever uncertainity due to a presence of a plurality of candidates for the translation arises by attempting to translate according to a translation dictionary containing rules for translation.
    Type: Grant
    Filed: May 24, 1990
    Date of Patent: February 11, 1992
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katumi Tanaka, Hideki Hirakawa, Hiroyasu Nogami, Shin-ya Amano
  • Variable magnification lens system
    Patent number: 4099846
    Abstract: In a variable focus objective an axial air space between a negative front lens and a positive rear lens component is variable for zooming. The first component is movable for focusing independently of the rear component and provided with a variable air space defined therein to facilitate focusing down to short object distances while preserving high grade imagery for close objects throughout the zooming range and assuring a good uniformity of image quality throughout the entire image region even at the full open aperture.
    Type: Grant
    Filed: September 1, 1976
    Date of Patent: July 11, 1978
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoto Kawamura, Akira Tajima, Katumi Tanaka