Patents by Inventor Yuuichi Kunisaki

Yuuichi Kunisaki 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).

  • Patent number: 5221963
    Abstract: A video camera comprising a taking lens, an image taking circuit which generates a video signal by receiving a light having passed through the taking lens, a knee correction circuit which compresses a video signal generated by the image taking circuit and having a level as high as or higher than a predetermined level, a detection circuit which detects a luminance distribution condition of a field, a pedestal adjusting circuit which adjusts a black level of the video signal generated by the image taking circuit and a control circuit which changes a compression method of a video signal in the knee correction circuit and an adjusting method of the black level in the pedestal adjusting circuit according to a luminance distribution condition of a field detected by the detection circuit. According to the present invention, it is possible to perform various controls in response to a luminance condition of a field.
    Type: Grant
    Filed: March 29, 1991
    Date of Patent: June 22, 1993
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Nobuo Hashimoto, Hiroaki Kubo, Yuuichi Kunisaki, Yoshito Konishi