Patents by Inventor Naoki Tazoe

Naoki Tazoe 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).

  • Fingerprint image forming apparatus, finger movement amount calculation method, and fingerprint image forming method
    Patent number: 8059872
    Abstract: A disclosed apparatus for forming a fingerprint image includes a partial sensor configured to obtain partial images of a fingerprint of a finger moving over the partial sensor; a reference image storing unit configured to store a reference partial image; and an image difference calculating unit configured to calculate a reference image difference between the reference partial image and a first partial image, to calculate a current image difference between the reference partial image and a second partial image, to calculate an amount of movement and/or a position of the finger based on a ratio of the current image difference to the reference image difference, and to store the second partial image and/or the first partial image as parts of the fingerprint image to be formed if the amount of movement and/or the position of the finger is equal to or greater than a predetermined value.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: November 15, 2011
    Assignee: Mitsumi Electric Co., Ltd.
    Inventor: Naoki Tazoe
  • Fingerprint image forming apparatus, finger movement amount calculation method, and fingerprint image forming method
    Publication number: 20080317290
    Abstract: A disclosed apparatus for forming a fingerprint image includes a partial sensor configured to obtain partial images of a fingerprint of a finger moving over the partial sensor; a reference image storing unit configured to store a reference partial image; and an image difference calculating unit configured to calculate a reference image difference between the reference partial image and a first partial image, to calculate a current image difference between the reference partial image and a second partial image, to calculate an amount of movement and/or a position of the finger based on a ratio of the current image difference to the reference image difference, and to store the second partial image and/or the first partial image as parts of the fingerprint image to be formed if the amount of movement and/or the position of the finger is equal to or greater than a predetermined value.
    Type: Application
    Filed: August 27, 2007
    Publication date: December 25, 2008
    Inventor: Naoki Tazoe