Patents by Inventor Tatsuhiko Sugimoto

Tatsuhiko Sugimoto 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 verification apparatus, fingerprint verification method and a fingerprint verification program
    Patent number: 7310433
    Abstract: An overlapped portion of a plurality of partial images of a fingerprint that are input from a fingerprint input device (7) is corrected to be reconfigured at a reconfiguration process section (106). The characteristics are extracted from the input partial images at the fingerprint characteristic information extracting section (110) and the extracted characteristic information is stored in an input characteristic information memory. A verification process section executes DP comparison (dynamic programming method) between the characteristic information stored in the input characteristic information memory and the characteristic information stored in the registered characteristic information memory. The distance value obtained by the DP comparison is compared to a threshold that is previously set. If the distance value is smaller than the threshold, it is judged the fingerprint is identified and if the distance value is larger than the threshold, it is judged that the fingerprint is not identified.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: December 18, 2007
    Assignees: Ume Tech Yugen Kaisha, Kabushiki Kaisha DDS
    Inventors: Taizo Umezaki, Kenji Miyoshino, Tatsuhiko Sugimoto, Toshio Ishizaka
  • FINGERPRINT VERIFICATION APPARATUS, FINGERPRINT VERIFICATION METHOD AND A FINGERPRINT VERIFICATION PROGRAM
    Publication number: 20030138136
    Abstract: An overlapped portion of a plurality of partial images of a fingerprint that are input from a fingerprint input device (7) is corrected to be reconfigured at a reconfiguration process section (106). The characteristics are extracted from the input partial images at the fingerprint characteristic information extracting section (110) and the extracted characteristic information is stored in an input characteristic information memory. A verification process section executes DP comparison (dynamic programming method) between the characteristic information stored in the input characteristic information memory and the characteristic information stored in the registered characteristic information memory. The distance value obtained by the DP comparison is compared to a threshold that is previously set. If the distance value is smaller than the threshold, it is judged the fingerprint is identified and if the distance value is larger than the threshold, it is judged that the fingerprint is not identified.
    Type: Application
    Filed: December 4, 2002
    Publication date: July 24, 2003
    Inventors: Taizo Umezaki, Kenji Miyoshino, Tatsuhiko Sugimoto, Toshio Ishizaka