Patents by Inventor Keiko Ishihama

Keiko Ishihama 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).

  • Video camera having an improved zoom system
    Patent number: 5557328
    Abstract: A video camera including a zoom-up lens assembly magnifying an image, a charge coupled device picking up the magnified image, a recording medium for storage of the magnified image and a viewfinder having a display panel and a liquid crystal device for determining a partial area of the display panel on which the magnified image to be recorded is displayed. The liquid crystal device is controlled by a microcomputer so as to form an opaque frame-like line surrounding the partial area of the display panel.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: September 17, 1996
    Assignee: Sony Corporation
    Inventors: Keiko Ishihama, Tokuya Fukuda, Toshitaka Senuma, Toru Shiono