公开(公告)号：US07606398B2

公开(公告)日：2009-10-20

申请号：US10497847

申请日：2002-12-06

申请人： Jon Nysæther ,  Knut Riisnæs ,  Ingvild Juvkam Dyve, legal representative ,  Ørjan G. Martinsen ,  Geir Mostad ,  Nicolai W. Christie ,  Rune Pedersen

发明人： Jon Nysæther ,  Knut Riisnæs ,  Ørjan G. Martinsen ,  Geir Mostad ,  Nicolai W. Christie ,  Rune Pedersen

IPC分类号： G06K9/00 ,  G06K9/20

CPC分类号： G06K9/0002

摘要： A sensor device for performing measurements on an at least partially conductive surface includes a number of conductive structures at or directly below the sensor surface. The conductive structures consist of at least one stimulation or current sink electrode and a number of sensor elements coupled to interrogation electrodes in an electronic circuit for measuring impedance between the electrodes and the stimulation electrode. The sensor device also includes at least one additional clamping electrode positioned in the vicinity of the sensor elements and coupled to a chosen voltage.

摘要翻译： 用于在至少部分导电表面上进行测量的传感器装置包括在传感器表面处或正下方的多个导电结构。 导电结构由至少一个刺激或电流吸收电极和耦合到用于测量电极和刺激电极之间的阻抗的电子电路中的询问电极的多个传感器元件组成。 传感器装置还包括位于传感器元件附近的至少一个附加的夹持电极，并耦合到选定的电压。

公开(公告)号：US07848798B2

公开(公告)日：2010-12-07

申请号：US10537508

申请日：2003-12-03

申请人： Ørjan G. Martinsen ,  Jon Nysæther ,  Knut Riisnæs ,  Ingvild Juvkam Dyve, legal representative ,  Geir Mostad ,  Rune Pedersen ,  Nicolai W. Christie ,  Sigmund Clausen

发明人： Ørjan G. Martinsen ,  Jon Nysæther ,  Knut Riisnæs ,  Geir Mostad ,  Rune Pedersen ,  Nicolai W. Christie ,  Sigmund Clausen

IPC分类号： A61B5/05 ,  G06T1/00 ,  G06T7/00

CPC分类号： A61B5/6826 ,  A61B5/0531 ,  A61B5/442 ,  A61B5/6838 ,  G06K9/0002 ,  G06K9/00899

摘要： Method and sensor assembly determining the condition of a structure, especially for confirming if a measured fingerprint is on a live finger, by measuring characteristics of close to the structure surface, the sensor comprising a first pair of current supply electrodes coupled to a current source, providing an electrical current to the skin, at least two pickup electrodes at chosen and different positions relative to the current supply electrodes, at least a first of said pickup electrodes being coupled to an instrument for measuring the voltage between said first pickup electrode and at least one of the pickup or current supply electrodes, storage means for a predetermined set of values characterizing a certain condition of the surface, and means for comparing the characteristics from each pickup electrode with the measurements of the other pickup electrodes and with the predetermined set of characteristics for determining the surface condition.

摘要翻译： 方法和传感器组件通过测量靠近结构表面的特性来确定结构的状况，特别是用于确认测得的指纹是否在活的手指上，所述传感器包括耦合到电流源的第一对电流供给电极， 向皮肤提供电流，相对于电流供应电极在选定和不同位置处的至少两个拾取电极，所述拾取电极中的至少第一拾波电极耦合到用于测量所述第一拾取电极和至少 拾取或供电电极中的一个，用于表征表面的一定条件的预定值的值的存储装置，以及用于将来自每个拾取电极的特性与其它拾取电极的测量结果以及预定特性集合进行比较的装置 用于确定表面状况。