Patents by Inventor Tetsuji Tsuji

Tetsuji Tsuji 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).

  • Authentication device and authentication method
    Patent number: 8194942
    Abstract: In view of the fact that the reproducibility of a finger vein pattern is deteriorated in an image of the finger vein due to external scattered light, displacement, change in the amount of blood flow and the like, a multiple-valued pattern matching method is adopted so that such changes can be dealt with by converting a data map itself into a multiple-valued map.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: June 5, 2012
    Assignee: Fit Design System Co., Ltd.
    Inventors: Takeo Tobe, Kenzo Mizuno, Tetsuji Tsuji, Isao Watanabe, Isao Kikuchi, Tadahito Watakai
  • Authentication Device And Authentication Method
    Publication number: 20100278397
    Abstract: An authentication can be carried out with high accuracy even when there is a change in an amount of incident light, the air temperature, the body temperature, or a manner to place a finger on a scanner.
    Type: Application
    Filed: August 27, 2008
    Publication date: November 4, 2010
    Applicant: FIT DESIGN SYSTEM CO., LTD.
    Inventors: Takeo Tobe, Kenzo Mizuno, Tetsuji Tsuji, Isao Watanabe, Isao Kikuchi, Tadahito Watakai