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    • 1. 发明授权
    • Method and system for contactless 3D fingerprint image acquisition
    • US11373435B2
    • 2022-06-28
    • US17135230
    • 2020-12-28
    • ZKTECO CO. LTD
    • Zhinong LiChongliang ZhongLimu Yang
    • G06K9/00G06V40/13G06V10/98G06V20/64G06V40/12G06F3/16
    • Embodiments of the present invention disclose a non-contact 3D fingerprint capturing apparatus and method. The apparatus includes: a housing, a circuit board and a fingerprint reader that are disposed in the housing; the circuit board includes a first control module; the fingerprint reader includes a fingerprint capturing module and a positioning module; the positioning module casts light to a first position point on a finger object; the fingerprint capturing module receives light reflected from the first position point, converts an optical signal into an electrical signal, and sends the electrical signal to the first control module; the first control module judges, according to the electrical signal, whether the first position point is a standard point, the standard point being an aperture with a diameter less than a first threshold and an illumination intensity greater than a second threshold; if the first position point is a standard point, the fingerprint capturing module captures fingerprint images from multiple directions, and transmits the fingerprint images to the first control module; and the first control module creates a 3D fingerprint image according to the fingerprint images. The embodiments of the present invention further provide a non-contact 3D fingerprint capturing method.
    • 5. 发明授权
    • Method and system for fingerprint security
    • US11144772B2
    • 2021-10-12
    • US16098276
    • 2017-01-12
    • ZKTECO CO. LTD
    • Zhinong LiQuanhong Che
    • G06K9/00G06K9/03
    • Embodiments of the present invention disclose a fingerprint anti-counterfeiting method and device used for implementing a fingerprint anti-counterfeiting function efficiently. The method in the embodiment of the present invention includes: acquiring a fingerprint image; controlling a camera to acquire a face image under a preset trigger condition; performing face identification on the face image according to a pre-stored face template; and determining the fingerprint image as an authentic fingerprint image when the face identification succeeds. As a fingerprint feature and a face feature of an identical user both can be used for uniquely identifying the user, the fingerprint feature and the face feature of the user can be associated with each other. If face identification performed on a face image according to a preset face module succeeds, it can be determined that an acquired fingerprint image is an authentic fingerprint image. Moreover, the fingerprint anti-counterfeiting device acquires a face image only under a preset trigger condition, thus restricting the degree of participation by a user when the device acquires the face image. As such, the probability of counterfeiting a face image is further reduced, thus achieving a highly efficient fingerprint anti-counterfeiting effect.
    • 6. 发明申请
    • Method and System for Contactless 3D Fingerprint Image Acquisition
    • US20210117643A1
    • 2021-04-22
    • US17135230
    • 2020-12-28
    • ZKTECO CO. LTD
    • Zhinong LIChongliang ZHONGLimu YANG
    • G06K9/00G06F3/16G06K9/03
    • Embodiments of the present invention disclose a non-contact 3D fingerprint capturing apparatus and method. The apparatus includes: a housing, a circuit board and a fingerprint reader that are disposed in the housing; the circuit board includes a first control module; the fingerprint reader includes a fingerprint capturing module and a positioning module; the positioning module casts light to a first position point on a finger object; the fingerprint capturing module receives light reflected from the first position point, converts an optical signal into an electrical signal, and sends the electrical signal to the first control module; the first control module judges, according to the electrical signal, whether the first position point is a standard point, the standard point being an aperture with a diameter less than a first threshold and an illumination intensity greater than a second threshold; if the first position point is a standard point, the fingerprint capturing module captures fingerprint images from multiple directions, and transmits the fingerprint images to the first control module; and the first control module creates a 3D fingerprint image according to the fingerprint images. The embodiments of the present invention further provide a non-contact 3D fingerprint capturing method.
    • 8. 发明授权
    • Method and system for contactless 3D fingerprint image acquisition
    • US10885300B2
    • 2021-01-05
    • US16098299
    • 2016-09-28
    • ZKTECO CO. LTD
    • Zhinong LiChongliang ZhongLimu Yang
    • G06K9/00G06K9/03G06F3/16
    • Embodiments of the present invention disclose a non-contact 3D fingerprint capturing apparatus and method. The apparatus includes: a housing, a circuit board and a fingerprint reader that are disposed in the housing; the circuit board includes a first control module; the fingerprint reader includes a fingerprint capturing module and a positioning module; the positioning module casts light to a first position point on a finger object; the fingerprint capturing module receives light reflected from the first position point, converts an optical signal into an electrical signal, and sends the electrical signal to the first control module; the first control module judges, according to the electrical signal, whether the first position point is a standard point, the standard point being an aperture with a diameter less than a first threshold and an illumination intensity greater than a second threshold; if the first position point is a standard point, the fingerprint capturing module captures fingerprint images from multiple directions, and transmits the fingerprint images to the first control module; and the first control module creates a 3D fingerprint image according to the fingerprint images. The embodiments of the present invention further provide a non-contact 3D fingerprint capturing method.