Patents by Inventor Hideo Kusaka

Hideo Kusaka 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).

  • Viewfinder for TV camera use with means for enhancing the contrast level of the viewfinder image
    Patent number: 4680639
    Abstract: The picture signal to be displayed on the viewfinder is corrected so as to be adaptive to the spatial frequency performance of visual system at close viewing distance of about three times of the viewing screen height. As a result, the luminance or the coloring of edge portions of the viewed picture is clearly emphasized and hence accurate and rapid focusing of pickup lens provided in any kind of TV camera is facilitated without conventional trial and error.
    Type: Grant
    Filed: August 1, 1985
    Date of Patent: July 14, 1987
    Assignee: Nippon Hoso Kyokai
    Inventors: Haruo Isono, Hideo Kusaka, Takeshi Hasegawa