Patents by Inventor Yukimasa Naka

Yukimasa Naka 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: 6288770
    Abstract: A film feeding apparatus and method are disclosed that have improved operability and reliability using magnetic reading devices and read magnetic data frame by frame, store them in RAM and set flags indicative of the presence or absence of the magnetic data while a film is unwound. If a frame whose magnetic data has not been read yet is judged to be present with reference to the flags in RAM, the magnetic data are read and stored in RAM and the flags are set while the film is rewound. If the frame whose magnetic data has not been read yet is judged again to be present with reference to the flags in RAM even after the film is rewound, an operator is notified by means of a display. If the operator gives a command to reread the magnetic data by means of a keyboard, the magnetic data are reread again after the feeding speed of the film is changed.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: September 11, 2001
    Assignee: Noritsu Koki Co., Ltd.
    Inventors: Keiji Hida, Yukimasa Naka, Yoshihiro Koyama
  • Patent number: 5578809
    Abstract: A code data reading apparatus for photographic film comprises a light emitter 23, lenses 22a and 22b, and a sensor 21. Wherein a bar code 24 recorded on a film F is exposed to light from the light emitter 23 and the enlarged optical image is projected by the lenses 22a and 22b on the detecting surface of the sensor 21.
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: November 26, 1996
    Assignee: Noritsu Koki Co., Ltd.
    Inventors: Yoshiyuki Yamaji, Yukimasa Naka, Shigetaka Nakamura