Patents by Inventor Fumitoshi Yoshimura

Fumitoshi Yoshimura 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).

  • Image recognition system with selectively variable brightness and color controlled light source
    Patent number: 5163102
    Abstract: An image recognition apparatus includes a light source including a plurality of light emitting diodes having different wavelengths, for illuminating an object, a driver for selectively operating the light emitting diodes and adjusting the brightness thereof, an image pick-up device for photoelectrically transferring the light reflected from the object into an image signal, and an image decision device for comparing a reference image signal with the image signal obtained by the image pick-up device and then deciding whether an image corresponding to the obtained image signal is clearer than an image corresponding to the reference image signal, the image decision device making the driver sequentially operates the light emitting diodes and change the brightness thereof in such a manner that the image corresponding to the image signal is clearer than the image corresponding to the reference image signal.
    Type: Grant
    Filed: March 18, 1991
    Date of Patent: November 10, 1992
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masao Yamazaki, Fumitoshi Yoshimura, Kenzo Nozaki, Junji Ogawa, Junichi Naemura