Patents by Inventor Nariyasu Sakai

Nariyasu Sakai 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).

  • Automatic focusing method
    Patent number: 5249011
    Abstract: An automatic focusing method is disclosed with which a plurality of selected objects can be held within the focusing range of the photographing lens of a camera. For each of object for which it is desired to keep within the focusing range, a focusing detection operation is carried out to provide defocusing data for the object. A weighted mean value of the defocusing data is employed as a common focal position.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: September 28, 1993
    Assignee: Asahi Kogaku Kogyo K.K.
    Inventor: Nariyasu Sakai