Patents by Inventor Kazuhiko Yukawa, deceased

Kazuhiko Yukawa, deceased 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).

  • Digital camera utilizing illumination from a flash light for focus detection and control
    Patent number: 7071986
    Abstract: Flash emission is required when image data have a low luminance value and when it is determined that flash emission is not prohibited, the built-in flash is used for autofocus (AF). An AF evaluation value is obtained under the flash emission, and the lens is driven based on this value. This operation is repeated until it is determined that the lens is focused, and accurate AF is executed even in dark conditions.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: July 4, 2006
    Assignee: Minolta Co., Ltd.
    Inventors: Yoshiharu Kobayashi, Kazumi Yukawa, legal representative, Masahito Niikawa, Kazuhiko Yukawa, deceased