Patents by Inventor Masa Seki

Masa Seki 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).

  • Gray balance control system
    Patent number: 5121195
    Abstract: A gray balance control system for reproducing original images. An optical signal is separated into a plurality of separated color signals, gray balance conversion data for each of the colors of the separated color signals is stored in a memory circuit, and an equivalent neutral density conversion is performed on the plurality of separated color signals by converting the color signals to gray balanced color signals in accordance with the gray balance conversion data. Finally, the gray balanced color signals are converted into print signals for coloring materials.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: June 9, 1992
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masa Seki, Yoshiharu Hibi, Katuyuki Kouno, Kazuyasu Sasuga, Akihiko Fusatani