ATE442083T1 - Lebendfingernachweis durch vier-punkte-messung der komplexen impedanz - Google Patents

Lebendfingernachweis durch vier-punkte-messung der komplexen impedanz

Info

Publication number
ATE442083T1
ATE442083T1 AT03812396T AT03812396T ATE442083T1 AT E442083 T1 ATE442083 T1 AT E442083T1 AT 03812396 T AT03812396 T AT 03812396T AT 03812396 T AT03812396 T AT 03812396T AT E442083 T1 ATE442083 T1 AT E442083T1
Authority
AT
Austria
Prior art keywords
pickup
electrodes
impedance measurement
complex impedance
current supply
Prior art date
Application number
AT03812396T
Other languages
English (en)
Inventor
Orjan Martinsen
Jon Nysaether
Knut Riisnaes
Geir Mostad
Rune Pedersen
Nicolai Christie
Sigmund Clausen
Original Assignee
Idex Asa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Idex Asa filed Critical Idex Asa
Application granted granted Critical
Publication of ATE442083T1 publication Critical patent/ATE442083T1/de

Links

Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/117—Identification of persons
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • 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
    • A61B5/442—Evaluating skin mechanical properties, e.g. elasticity, hardness, texture, wrinkle assessment
    • 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
    • A61B5/683—Means for maintaining contact with the body
    • A61B5/6838—Clamps or clips
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dermatology (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Image Input (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Collating Specific Patterns (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Gloves (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
AT03812396T 2002-12-03 2003-12-03 Lebendfingernachweis durch vier-punkte-messung der komplexen impedanz ATE442083T1 (de)

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 (1)

Publication Number Publication Date
ATE442083T1 true ATE442083T1 (de) 2009-09-15

Family

ID=19914250

Family Applications (1)

Application Number Title Priority Date Filing Date
AT03812396T ATE442083T1 (de) 2002-12-03 2003-12-03 Lebendfingernachweis durch vier-punkte-messung der komplexen impedanz

Country Status (12)

Country Link
US (2) US7848798B2 (de)
EP (1) EP1567057B1 (de)
JP (1) JP4528130B2 (de)
KR (1) KR20050074650A (de)
CN (1) CN100401980C (de)
AT (1) ATE442083T1 (de)
AU (1) AU2003302594A1 (de)
DE (1) DE60329218D1 (de)
DK (1) DK1567057T3 (de)
ES (1) ES2333119T3 (de)
NO (2) NO20025803D0 (de)
WO (1) WO2004049942A1 (de)

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US9251329B2 (en) 2012-03-27 2016-02-02 Synaptics Incorporated Button depress wakeup and wakeup strategy
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US9600709B2 (en) 2012-03-28 2017-03-21 Synaptics Incorporated Methods and systems for enrolling biometric data
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CN105981049A (zh) * 2014-02-25 2016-09-28 Hid环球公司 生物阻抗欺骗检测
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EP3229747B1 (de) * 2014-12-11 2019-09-04 Essity Hygiene and Health Aktiebolag Impedanzsensoren zur detektion und überwachung von feuchtigkeit in absorbierenden artikeln
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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
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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
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Also Published As

Publication number Publication date
CN1720001A (zh) 2006-01-11
ES2333119T3 (es) 2010-02-17
AU2003302594A1 (en) 2004-06-23
EP1567057B1 (de) 2009-09-09
HK1087317A1 (en) 2006-10-13
WO2004049942A1 (en) 2004-06-17
JP4528130B2 (ja) 2010-08-18
NO20025803D0 (no) 2002-12-03
CN100401980C (zh) 2008-07-16
US20110074443A1 (en) 2011-03-31
NO339828B1 (no) 2017-02-13
NO20053222D0 (no) 2005-06-30
DE60329218D1 (de) 2009-10-22
US8195285B2 (en) 2012-06-05
DK1567057T3 (da) 2009-11-23
US20050281441A1 (en) 2005-12-22
JP2006508734A (ja) 2006-03-16
NO20053222L (no) 2005-06-30
US7848798B2 (en) 2010-12-07
KR20050074650A (ko) 2005-07-18
EP1567057A1 (de) 2005-08-31

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