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    BIOIMPEDANCE SPOOF DETECTION
    3.
    发明公开
    BIOIMPEDANCE SPOOF DETECTION 审中-公开

    公开(公告)号：EP3111371A4

    公开(公告)日：2017-10-11

    申请号：EP15754787

    申请日：2015-02-25

    申请人： HID GLOBAL CORP

    发明人： ROWE ROBERT K ,  MATTER NATHANIEL I

    IPC分类号： G06K9/00

    CPC分类号： G06K9/0012 ,  G06K9/0002 ,  G06K9/00053 ,  G06K9/00087

    摘要： Embodiments relate to bioimpedence-based spoof detection in an optical biometric reader. For example, embodiments operate in context of a biometric reader having a platen integrated with substantially transparent bioimpedance source and receiver electrodes covered by a substantially transparent protective layer. A multi-frequency input signal can be injected from the source electrode into a purported skin site (through the protective layer), so that a response signal is received by the receiver electrode. The response signal is interrogated to formulate a dispersive bioimpedance response of the purported skin site to the input signal over multiple frequencies. A biometric spoof determination can then be made according to the dispersive bioimpedance response. The spoof determination can be used for spoof detection, presence detection, and/or other functions.

    OPTICAL TOPOGRAPHIC IMAGING
    7.
    发明公开
    OPTICAL TOPOGRAPHIC IMAGING 有权
    光学成像地形

    公开(公告)号：EP2697970A4

    公开(公告)日：2016-08-17

    申请号：EP12771778

    申请日：2012-04-11

    申请人： HID GLOBAL CORP

    发明人： MUELLER HORST ARNOLD ,  MARTIN RYAN ERIC ,  ROWE ROBERT K

    IPC分类号： H04N7/18

    CPC分类号： G06T7/0073 ,  G06K9/00013 ,  G06K9/00033 ,  G06K9/0012 ,  G06K9/00899 ,  G06K9/2036 ,  G06K9/4661 ,  G06T7/586 ,  G06T2207/10152

    摘要： Methods and devices of studying a predefined portion of an object having a feature of interest are disclosed. The feature of interest defines a class of objects that includes the object. Light sources directly illuminate the object from different illumination directions. The light sources are maintained in a stable configuration relative to the object. For each illumination direction, an image is generated from light scattered from the object with a camera maintained in a stable configuration relative to the light sources. A methodology derived from machine learning for the class of objects is applied to filter the generated images are filtered for a characteristic consistent with the feature of interest. Surface gradients are determined from the filtered images and integrated to generate a topography of a surface of the object.

    CREDENTIAL PRODUCTION PRINT RIBBON AND TRANSFER RIBBON CARTRIDGES
    9.
    发明公开
    CREDENTIAL PRODUCTION PRINT RIBBON AND TRANSFER RIBBON CARTRIDGES 审中-公开
    压力频段决策权证明和传输带夹盘

    公开(公告)号：EP2125378A4

    公开(公告)日：2013-11-20

    申请号：EP08713233

    申请日：2008-01-23

    申请人： HID GLOBAL CORP

    发明人： HOFFMAN TED M

    IPC分类号： B41J32/00 ,  B41J17/32 ,  B41J17/42 ,  B41J32/02 ,  B42D15/10 ,  G06K19/10

    CPC分类号： B41J17/32 ,  B41J17/42 ,  B41J32/02

    摘要： A ribbon cartridge for use in a credential production device is disclosed. The ribbon cartridge includes a take-up spool, a supply spool and a ribbon wound on the supply and take-up spools. The supply spool includes a loaded condition, in which a majority of the ribbon is wound on the supply spool and a minority of the ribbon is wound on the take-up spool. The take-up spool includes a loaded condition, in which a majority of the ribbon is wound on the take-up spool and a minority of the ribbon is wound on the supply spool. The ribbon wound on the supply spool in the loaded condition extends into the space occupied by the ribbon wound on the take-up spool when the take-up spool is in the loaded condition.