Device, fingerprint input device and machine-readable medium

    公开(公告)号:USRE50114E1

    公开(公告)日:2024-09-10

    申请号:US15789874

    申请日:2017-10-20

    申请人: NEC Corporation

    发明人: Teruyuki Higuchi

    摘要: A device is not able to detect the forgery of a finger with high accuracy by the comparison of a reflected light image and a transmitted light image that are obtained from the same finger. A determination device is provided with an input means for receiving the reflected light image obtained by photographing a fingerprint of a finger with light reflected from the surface of the finger and the transmitted light image obtained by photographing the fingerprint of the finger with light transmitted through the finger, and a determination means for comparing the reflected light image and the transmitted light image, and outputting a real-forgery determination result of the fingerprint of the finger.

    Authentication using prism
    8.
    发明授权

    公开(公告)号:US11908232B2

    公开(公告)日:2024-02-20

    申请号:US18107196

    申请日:2023-02-08

    申请人: NEC Corporation

    发明人: Teruyuki Higuchi

    摘要: A prism of an approximately quadrangle-frustum shape is arranged so that a bottom side, out of two parallel surfaces of the prism, is a placing surface side for a finger. A first imaging unit arranged below a top surface parallel to the bottom surface images an image of the finger transmitted through the top surface. A light source radiates light to at least one side surface of a first set of side surfaces, out of two sets of side surfaces of the approximately quadrangle-frustum shape that face each other. A second imaging unit images the image of the finger transmitted through a second set of side surfaces, out of the two sets of side surfaces. An infrared ray light source radiates infrared ray light into the finger so that the infrared ray light is scattered inside the finger and is received by the imaging unit.