Patents by Inventor Kouzi Kawasaki

Kouzi Kawasaki 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 method employing plural correlation judgement levels and sequential judgement stages
    Patent number: 5040223
    Abstract: A method of fingerprint verification in which an input fingerprint is compared with a previously registered fingerprint, wherein the degree of correlation between a first section of the registered fingerprint and the input fingerprint is first determined by first-stage verification processing. If the correlation is higher than a first threshold value the input fingerprint is accepted, if lower than a second threshold value it is rejected, and if between these values, second-stage verification processing is executed in which a different section of the registered fingerprint is compared with the input fingerprint, and a final judgement made accordingly.
    Type: Grant
    Filed: February 17, 1989
    Date of Patent: August 13, 1991
    Assignee: Nippondenso Co., Ltd.
    Inventors: Toshiharu Kamiya, Kouzi Kawasaki, Kazuyori Kawai, Michinaga Nagura, Osamu Eguchi