JP4528130B2 - 複素インピーダンスの4点測定による生きている指の検出 - Google Patents
複素インピーダンスの4点測定による生きている指の検出 Download PDFInfo
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/117—Identification of persons
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/053—Measuring electrical impedance or conductance of a portion of the body
- A61B5/0531—Measuring skin impedance
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6825—Hand
- A61B5/6826—Finger
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- A—HUMAN NECESSITIES
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- A61B5/44—Detecting, measuring or recording for evaluating the integumentary system, e.g. skin, hair or nails
- A61B5/441—Skin evaluation, e.g. for skin disorder diagnosis
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/683—Means for maintaining contact with the body
- A61B5/6838—Clamps or clips
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/40—Spoof detection, e.g. liveness detection
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Description
容量またはインピーダンスをベースにした指紋センサは、生体計測による識別のための低価格で小型化された装置を提供する最も有望な方法の幾つかである。従って、このようなセンサは、移動電話等に一体化するための可能な候補である。
US5,953,441に記載されているような二次元マトリクス・センサから、US6,289,114における半重複部分画像の列から指紋画像を再構成するセンサ・アレイを経て、EP0988614に記載されているような、指の表面を走査して指画像を再構成するよう測定された指速度を用いる線形センサまでの、幾つかの異なった種類の指紋センサが最近開発されてきている。
図1において、指の表面11は、幾つかのセンサ10上に位置付けられる。指の構造は、2つの層、すなわち、生きている指の角質層12及び生きている組織13を含む。角質層(ホーニー層もしくは角層)12は、4つの示された電極10の各々において、それぞれ、インピーダンスZ1、Z2、Z3及びZ4を構成し、生きている組織は、インピーダンスZ0を表す。
11 指の表面
12 指の角質層
13 指の生きている組織
S1 スイッチ
S2 スイッチ
Claims (10)
- 構造の状態を決定するための、特に、該構造の表面に近接した特性を測定することにより、測定された指紋が生きた指の上のものであるか否かを確認するためのセンサ・アセンブリにおいて、
該センサは、
電流源と、
互いに対して相対的な選択された位置にある少なくとも4つの電極であって、前記位置は、電極間の少なくとも2つの相対距離を提供し、前記少なくとも4つの電極の選択された第1の対は電流供給電極を構成し、前記少なくとも4つの電極の選択された第2の対はピックアップ電極を構成し、前記第2の対のうちの少なくとも1つの電極は電流供給電極を構成しない、前記少なくとも4つの電極と、
前記少なくとも4つの電極に結合され、前記構造を特性付ける値を提供するよう前記選択された対のピックアップ電極間のインピーダンスを測定するための測定機器と、
前記構造に対する選択された状態を特性付ける値の所定の組を記憶するための記憶手段と、
前記構造が或る状態にあるか否かを検出するために、前記少なくとも1つの対のピックアップ電極の各々からの前記特性を、前記組の所定の値と比較するための計算手段と、
を備え、
前記構造内の異なった深さにおける特性値を測定するために、少なくとも1つの電流供給及び測定機器を、電極間の異なった距離を有する異なった電極対に交互に結合するよう適合され、
前記計算手段は、前記構造内の異なった深さにおける特性値について前記比較したときに、前記比較の結果が、いずれの深さの特性値も前記組のいずれかの値と一致している場合、前記測定された指紋が生きた指の上のものであると判断するセンサ・アセンブリ。 - 供給された電流は、選択された周波数範囲内で振動している請求項1に記載のセンサ・アセンブリ。
- センサ・アセンブリは、各ピックアップ電極におけるインピーダンスを測定するための測定手段を備え、前記計算手段は、結果の曲線の勾配を決定することにより、印加された周波数の関数として、インピーダンス信号の虚数部と実数部とを比較し、かつこの勾配を、生きている指を示す勾配の所定の組と比較するための比較手段を含む請求項2に記載のセンサ・アセンブリ。
- 前記供給電極の第1のものと前記第1のピックアップ電極との間の距離は、1mmより小さい請求項1に記載のセンサ・アセンブリ。
- センサ間の相対位置を変えるように、従って、測定された表面の特性を変えるように、ピックアップ及び供給電極の役割が順次に変化し得るように、電極の役割を交換するための制御手段を備えた請求項1に記載のセンサ・アセンブリ。
- センサ・アセンブリは、各ピックアップ電極における信号の位相を測定するための測定手段を備え、前記計算手段は、選択された周波数においてピックアップ及び供給電極間の距離を信号の対応の位相と比較し、これらのパラメータを生きている指を示す所定の組と比較する比較手段を備えている請求項5に記載のセンサ・アセンブリ。
- ピックアップ電極は、指紋センサ・アレイにおけるセンサ素子によって構成される請求項1に記載のセンサ・アセンブリ。
- 構造の表面に近接した特性を測定することにより、測定された指紋が生きた指の上のものであるか否かを確認するための方法であるとともに、
電極間で少なくとも2つの異なった距離を有する少なくとも4つの電極を構造の表面に結合して用いることにより、構造の表面に近接した構造の状態、例えば、角質層と生皮膚との皮膚の2つの外部の部分の電気特性を特性付けるための方法であって、
第1の対の電流供給電極間で皮膚に電流または電圧を印加する段階と、
少なくとも1つが電流供給電極ではない第2の対のピックアップ電極間のインピーダンスを測定し、これに関連する電気特性を計算する段階と、
第2の対の電流供給電極間に電流を印加して、ピックアップ電極間及び/または電流供給電極間の少なくとも2つの異なった距離でそれぞれ測定を行なうように、電極の役割を順次に変化させる段階と、
測定されたインピーダンスを、構造の少なくとも1つの状態を特性付ける値の所定の組と比較する段階と、
測定された値と値の所定の組との間の比較に基づいて構造の状態を決定する段階と、
を含み、
前記決定する手段は、前記2つの異なった距離でそれぞれ測定を行なったとき、それぞれの測定に対する前記比較の結果が、いずれの深さのインピーダンスも前記所定の組のいずれかの値と一致している場合、前記測定された指紋が生きた指の上のものであると判断する段階を、さらに有する方法。 - 2つの電極間に電流または電圧を印加する段階は、変化する周波数信号を印加する段階を含んで、前記電流供給電極の1つと前記電流供給電極から選択された距離に位置付けられた少なくとも2つのピックアップ電極との間のインピーダンスを測定する請求項8に記載の方法。
- 測定されたインピーダンスを比較することは、印加された周波数の関数として、測定されたインピーダンス信号の虚数部及び実数部間の関係を記述する曲線の勾配を決定し、決定された勾配を、生きている指を特性付ける値の所定の組と比較することにより行なわれる請求項9に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20025803A NO20025803D0 (no) | 2002-12-03 | 2002-12-03 | Levende finger |
PCT/NO2003/000405 WO2004049942A1 (en) | 2002-12-03 | 2003-12-03 | Live finger detection by four-point measurement of complex impedance |
Publications (2)
Publication Number | Publication Date |
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JP2006508734A JP2006508734A (ja) | 2006-03-16 |
JP4528130B2 true JP4528130B2 (ja) | 2010-08-18 |
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JP2004557000A Expired - Fee Related JP4528130B2 (ja) | 2002-12-03 | 2003-12-03 | 複素インピーダンスの4点測定による生きている指の検出 |
Country Status (13)
Country | Link |
---|---|
US (2) | US7848798B2 (ja) |
EP (1) | EP1567057B1 (ja) |
JP (1) | JP4528130B2 (ja) |
KR (1) | KR20050074650A (ja) |
CN (1) | CN100401980C (ja) |
AT (1) | ATE442083T1 (ja) |
AU (1) | AU2003302594A1 (ja) |
DE (1) | DE60329218D1 (ja) |
DK (1) | DK1567057T3 (ja) |
ES (1) | ES2333119T3 (ja) |
HK (1) | HK1087317A1 (ja) |
NO (2) | NO20025803D0 (ja) |
WO (1) | WO2004049942A1 (ja) |
Families Citing this family (71)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO20025803D0 (no) | 2002-12-03 | 2002-12-03 | Idex Asa | Levende finger |
US8131026B2 (en) | 2004-04-16 | 2012-03-06 | Validity Sensors, Inc. | Method and apparatus for fingerprint image reconstruction |
US8447077B2 (en) | 2006-09-11 | 2013-05-21 | Validity Sensors, Inc. | Method and apparatus for fingerprint motion tracking using an in-line array |
EP1778083B1 (en) | 2004-07-15 | 2010-05-26 | Laerdal Medical AS | Method and system for monitoring ventilations |
NO321585B1 (no) | 2004-07-15 | 2006-06-06 | Laerdal Medical As | Rorplassering |
WO2006041780A1 (en) | 2004-10-04 | 2006-04-20 | Validity Sensors, Inc. | Fingerprint sensing assemblies comprising a substrate |
JP4788147B2 (ja) * | 2005-01-26 | 2011-10-05 | パナソニック電工株式会社 | 体脂肪測定装置 |
US7496216B2 (en) * | 2005-06-21 | 2009-02-24 | Hewlett-Packard Development Company, L.P. | Fingerprint capture |
CA2653406C (en) * | 2006-05-30 | 2015-03-17 | The University Of Queensland | Impedance measurements |
US10188348B2 (en) | 2006-06-05 | 2019-01-29 | Masimo Corporation | Parameter upgrade system |
US7880626B2 (en) | 2006-10-12 | 2011-02-01 | Masimo Corporation | System and method for monitoring the life of a physiological sensor |
US7859116B1 (en) | 2006-12-26 | 2010-12-28 | Amkor Technology, Inc. | Exposed metal bezel for use in sensor devices and method therefor |
US8276816B2 (en) | 2007-12-14 | 2012-10-02 | Validity Sensors, Inc. | Smart card system with ergonomic fingerprint sensor and method of using |
US8116540B2 (en) | 2008-04-04 | 2012-02-14 | Validity Sensors, Inc. | Apparatus and method for reducing noise in fingerprint sensing circuits |
DE112009001794T5 (de) | 2008-07-22 | 2012-01-26 | Validity Sensors, Inc. | System, Vorrichtung und Verfahren zum Sichern einer Vorrichtungskomponente |
NO20083766L (no) | 2008-09-01 | 2010-03-02 | Idex Asa | Overflatesensor |
AU2009310362A1 (en) * | 2008-11-03 | 2010-05-06 | Cross Match Technologies, Inc. | Apparatus and method for the identification of fake fingerprints |
US8391568B2 (en) | 2008-11-10 | 2013-03-05 | Validity Sensors, Inc. | System and method for improved scanning of fingerprint edges |
US8278946B2 (en) | 2009-01-15 | 2012-10-02 | Validity Sensors, Inc. | Apparatus and method for detecting finger activity on a fingerprint sensor |
US8600122B2 (en) | 2009-01-15 | 2013-12-03 | Validity Sensors, Inc. | Apparatus and method for culling substantially redundant data in fingerprint sensing circuits |
US8374407B2 (en) | 2009-01-28 | 2013-02-12 | Validity Sensors, Inc. | Live finger detection |
US8571619B2 (en) | 2009-05-20 | 2013-10-29 | Masimo Corporation | Hemoglobin display and patient treatment |
US9336428B2 (en) | 2009-10-30 | 2016-05-10 | Synaptics Incorporated | Integrated fingerprint sensor and display |
NO20093601A1 (no) | 2009-12-29 | 2011-06-30 | Idex Asa | Overflatesensor |
US8866347B2 (en) | 2010-01-15 | 2014-10-21 | Idex Asa | Biometric image sensing |
US8791792B2 (en) | 2010-01-15 | 2014-07-29 | Idex Asa | Electronic imager using an impedance sensor grid array mounted on or about a switch and method of making |
US8421890B2 (en) | 2010-01-15 | 2013-04-16 | Picofield Technologies, Inc. | Electronic imager using an impedance sensor grid array and method of making |
US9666635B2 (en) | 2010-02-19 | 2017-05-30 | Synaptics Incorporated | Fingerprint sensing circuit |
US8716613B2 (en) | 2010-03-02 | 2014-05-06 | Synaptics Incoporated | Apparatus and method for electrostatic discharge protection |
EP2563215B1 (en) * | 2010-04-26 | 2016-03-02 | SciBase AB | Method and device for quality assessment of an electrical impedance measurement on tissue |
US9042975B2 (en) * | 2010-04-30 | 2015-05-26 | Wisys Technology Foundation | Method and apparatus for eliminating loading and electrode polarization effects in impedance measurements for tissues and electrolytes |
US9001040B2 (en) | 2010-06-02 | 2015-04-07 | Synaptics Incorporated | Integrated fingerprint sensor and navigation device |
WO2012009443A1 (en) | 2010-07-13 | 2012-01-19 | Scott Mcnulty | System, method and apparatus for sensing biometric information |
US8717775B1 (en) | 2010-08-02 | 2014-05-06 | Amkor Technology, Inc. | Fingerprint sensor package and method |
US8331096B2 (en) | 2010-08-20 | 2012-12-11 | Validity Sensors, Inc. | Fingerprint acquisition expansion card apparatus |
US8888004B2 (en) | 2010-10-08 | 2014-11-18 | Authentec, Inc. | Finger sensing device including differential measurement circuitry and related methods |
US8594393B2 (en) | 2011-01-26 | 2013-11-26 | Validity Sensors | System for and method of image reconstruction with dual line scanner using line counts |
US8538097B2 (en) | 2011-01-26 | 2013-09-17 | Validity Sensors, Inc. | User input utilizing dual line scanner apparatus and method |
GB2489100A (en) | 2011-03-16 | 2012-09-19 | Validity Sensors Inc | Wafer-level packaging for a fingerprint sensor |
WO2012158950A1 (en) | 2011-05-17 | 2012-11-22 | Cross Match Technologies, Inc. | Fingerprint sensors |
ES2398438B1 (es) * | 2011-07-29 | 2014-03-05 | Universitat Politècnica De Catalunya | Método y aparato para obtener varias derivaciones simultáneas del electrocardiograma |
WO2013071311A1 (en) | 2011-11-11 | 2013-05-16 | Cross Match Technologies, Inc. | Ambient light rejection for non-imaging contact sensors |
WO2013071312A1 (en) | 2011-11-12 | 2013-05-16 | Cross Match Technologies, Inc. | Ambient light illumination for non-imaging contact sensors |
US9195877B2 (en) | 2011-12-23 | 2015-11-24 | Synaptics Incorporated | Methods and devices for capacitive image sensing |
US9137438B2 (en) | 2012-03-27 | 2015-09-15 | Synaptics Incorporated | Biometric object sensor and method |
US9251329B2 (en) | 2012-03-27 | 2016-02-02 | Synaptics Incorporated | Button depress wakeup and wakeup strategy |
US9600709B2 (en) | 2012-03-28 | 2017-03-21 | Synaptics Incorporated | Methods and systems for enrolling biometric data |
CN104838390B (zh) | 2012-04-10 | 2018-11-09 | 艾戴克斯公司 | 生物计量感测 |
US9471764B2 (en) * | 2012-07-19 | 2016-10-18 | Apple Inc. | Electronic device switchable to a user-interface unlocked mode based upon spoof detection and related methods |
US10624583B2 (en) * | 2012-11-09 | 2020-04-21 | Nonin Medical, Inc. | Reactance sensing for improved sensor placement |
US9665762B2 (en) | 2013-01-11 | 2017-05-30 | Synaptics Incorporated | Tiered wakeup strategy |
EP2950705A1 (de) * | 2013-01-29 | 2015-12-09 | seca ag | Verfahren zur plausibilisierung |
US9104901B2 (en) * | 2013-03-15 | 2015-08-11 | Apple Inc. | Electronic device including interleaved biometric spoof detection data acquisition and related methods |
CN103440474A (zh) * | 2013-08-12 | 2013-12-11 | 江苏恒成高科信息科技有限公司 | 半导体指纹读取传感器装置 |
CN114639126A (zh) * | 2014-02-25 | 2022-06-17 | Hid环球公司 | 生物计量传感器 |
WO2015129756A1 (ja) * | 2014-02-25 | 2015-09-03 | 学校法人北里研究所 | 画像生成装置、導電率取得装置、画像生成方法及びプログラム |
DE102014111487B4 (de) * | 2014-08-12 | 2021-07-22 | Infineon Technologies Ag | Chipkarte und chipkartenhülle |
US10874559B2 (en) * | 2014-12-11 | 2020-12-29 | Essity Hygiene And Health Aktiebolag | Impedance sensors for detecting and monitoring moisture in absorbent articles |
BR112017014758B1 (pt) * | 2015-01-08 | 2024-01-16 | Medasense Biometrics Ltd | Arranjo de eletrodos de resposta galvânica da pele (gsr) |
CN106156697B (zh) * | 2015-03-30 | 2020-05-26 | 联想(北京)有限公司 | 一种信息处理方法及装置 |
CN106156698A (zh) * | 2015-03-30 | 2016-11-23 | 联想(北京)有限公司 | 一种信息处理方法及电子设备 |
KR102626033B1 (ko) | 2015-06-23 | 2024-01-18 | 이덱스 바이오메트릭스 아사 | 양면 지문 센서 |
GB2552131A (en) * | 2016-05-06 | 2018-01-17 | Zwipe As | Electrical validation of a purported finger |
US9965671B2 (en) * | 2016-06-27 | 2018-05-08 | Himax Technologies Limited | Material identifying system and related identifying method |
TWI612298B (zh) * | 2016-07-22 | 2018-01-21 | 奇景光電股份有限公司 | 材料辨識系統及相關辨識方法 |
CN107664656B (zh) * | 2016-07-28 | 2020-06-30 | 奇景光电股份有限公司 | 材料辨识系统及材料辨识方法 |
US10713461B2 (en) | 2017-09-19 | 2020-07-14 | IDEX Biometrtics ASA | Double sided sensor module suitable for integration into electronic devices |
TWI666590B (zh) * | 2018-04-10 | 2019-07-21 | 友達光電股份有限公司 | 指紋感測面板及其指紋感測器 |
KR20200012598A (ko) * | 2018-07-27 | 2020-02-05 | 삼성전자주식회사 | 생체 신호 측정 장치 및 방법 |
US11488361B1 (en) * | 2019-02-15 | 2022-11-01 | Meta Platforms Technologies, Llc | Systems and methods for calibrating wearables based on impedance levels of users' skin surfaces |
CN110279399B (zh) * | 2019-06-25 | 2022-02-18 | 深圳前海蒂脉时代科技控股有限公司 | 一种微型便携式指静脉实时图像采集识别设备 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL65581A (en) * | 1982-04-22 | 1985-12-31 | Dan Atlas | Electrical measuring system particularly useful for the non-invasive examination of biological tissue |
JPH01126535A (ja) * | 1987-11-12 | 1989-05-18 | Kao Corp | 皮膚水分含有量の測定方法および装置 |
CN2044475U (zh) * | 1989-02-02 | 1989-09-20 | 四川省公安厅 | 指纹显现器 |
US5579782A (en) * | 1993-08-12 | 1996-12-03 | Omron Corporation | Device to provide data as a guide to health management |
AU1328595A (en) * | 1994-06-20 | 1996-01-15 | Auckland Uniservices Limited | Brain damage monitor |
NO180024C (no) | 1994-10-11 | 1997-01-29 | Oerjan G Martinsen | Måling av fuktighet i hud |
HU214533B (hu) | 1995-10-06 | 1998-03-30 | Dermo Corporation Ltd. | Detektor ujj élő jellegének felismerésére |
US5953441A (en) * | 1997-05-16 | 1999-09-14 | Harris Corporation | Fingerprint sensor having spoof reduction features and related methods |
AUPP031097A0 (en) * | 1997-11-10 | 1997-12-04 | Clift, Vaughan | Skin impedance imaging system |
DE19830830C2 (de) * | 1998-07-09 | 2000-11-23 | Siemens Ag | Verfahren zur Lebenderkennung menschlicher Haut |
EP1119288A4 (en) | 1998-10-08 | 2003-06-11 | Polartechnics Ltd | DEVICE FOR DETECTING TISSUE TYPES |
JP2000175875A (ja) * | 1998-12-17 | 2000-06-27 | Kao Corp | 体脂肪計測方法及び計測装置 |
JP2001104274A (ja) * | 1999-10-14 | 2001-04-17 | Shikoku Instrumentation Co Ltd | 生体インピーダンス計測装置用電極 |
US6735468B2 (en) * | 2000-02-02 | 2004-05-11 | Massachusetts Institute Of Technology | Arthroscopic impedance probe to detect cartilage degeneration |
CN2425618Y (zh) * | 2000-03-01 | 2001-04-04 | 深圳智同指纹技术有限公司 | 活体指纹采集仪 |
JP4840952B2 (ja) * | 2000-09-19 | 2011-12-21 | 株式会社フィジオン | 生体電気インピーダンス計測方法及び計測装置、並びに該計測装置を用いた健康指針管理アドバイス装置 |
CN2480918Y (zh) * | 2001-06-04 | 2002-03-06 | 蔺新开 | 一体化综合型个人特征采样仪 |
NO321659B1 (no) * | 2002-05-14 | 2006-06-19 | Idex Asa | Volumspesifikk karakterisering av menneskehud ved elektrisk immitans |
NO20025803D0 (no) | 2002-12-03 | 2002-12-03 | Idex Asa | Levende finger |
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US7848798B2 (en) | 2010-12-07 |
JP2006508734A (ja) | 2006-03-16 |
CN1720001A (zh) | 2006-01-11 |
NO339828B1 (no) | 2017-02-13 |
EP1567057B1 (en) | 2009-09-09 |
HK1087317A1 (ja) | 2006-10-13 |
NO20025803D0 (no) | 2002-12-03 |
NO20053222L (no) | 2005-06-30 |
ES2333119T3 (es) | 2010-02-17 |
WO2004049942A1 (en) | 2004-06-17 |
DE60329218D1 (de) | 2009-10-22 |
CN100401980C (zh) | 2008-07-16 |
US8195285B2 (en) | 2012-06-05 |
AU2003302594A1 (en) | 2004-06-23 |
US20050281441A1 (en) | 2005-12-22 |
US20110074443A1 (en) | 2011-03-31 |
EP1567057A1 (en) | 2005-08-31 |
DK1567057T3 (da) | 2009-11-23 |
KR20050074650A (ko) | 2005-07-18 |
NO20053222D0 (no) | 2005-06-30 |
ATE442083T1 (de) | 2009-09-15 |
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