WO2001094966A3 - Velocity measurement for a moving finger, when detecting fingerprints. velocity is determined by analysing flank shifts. - Google Patents

Velocity measurement for a moving finger, when detecting fingerprints. velocity is determined by analysing flank shifts. Download PDF

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Publication number
WO2001094966A3
WO2001094966A3 PCT/NO2001/000242 NO0100242W WO0194966A3 WO 2001094966 A3 WO2001094966 A3 WO 2001094966A3 NO 0100242 W NO0100242 W NO 0100242W WO 0194966 A3 WO0194966 A3 WO 0194966A3
Authority
WO
WIPO (PCT)
Prior art keywords
velocity
analysing
determined
sensors
moving finger
Prior art date
Application number
PCT/NO2001/000242
Other languages
French (fr)
Other versions
WO2001094966A2 (en
Inventor
Stig Mathiassen
Svein Mathiassen
Original Assignee
Idex As
Stig Mathiassen
Svein Mathiassen
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 As, Stig Mathiassen, Svein Mathiassen filed Critical Idex As
Priority to AU2001264433A priority Critical patent/AU2001264433A1/en
Publication of WO2001094966A2 publication Critical patent/WO2001094966A2/en
Publication of WO2001094966A3 publication Critical patent/WO2001094966A3/en

Links

Classifications

    • 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
    • G06V40/1335—Combining adjacent partial images (e.g. slices) to create a composite input or reference pattern; Tracking a sweeping finger movement

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Image Input (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

This invention relates to a method for determining the velocity of a structured surface, especially a finger surface, moving relative to at least two in the direction of movement positioned sensors, having a predetermined distance between them, the sensors measuring the variation of a predetermined characteristic of said surface, comprising repeated measurements of the finger surface characteristic and detection of a the presence of a predetermined value along to the time axis for each sensor, and based on the time lapse between the occurance of the predetermined value at each sensor, as well as the known distance between the sensors, calculation of the surface velocity relative to the sensors.
PCT/NO2001/000242 2000-06-09 2001-06-08 Velocity measurement for a moving finger, when detecting fingerprints. velocity is determined by analysing flank shifts. WO2001094966A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001264433A AU2001264433A1 (en) 2000-06-09 2001-06-08 Velocity measurement - flank shift

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20003002 2000-06-09
NO20003002A NO20003002L (en) 2000-06-09 2000-06-09 Speed calculation of fingerprint measurement using flank measurement

Publications (2)

Publication Number Publication Date
WO2001094966A2 WO2001094966A2 (en) 2001-12-13
WO2001094966A3 true WO2001094966A3 (en) 2002-05-02

Family

ID=19911248

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2001/000242 WO2001094966A2 (en) 2000-06-09 2001-06-08 Velocity measurement for a moving finger, when detecting fingerprints. velocity is determined by analysing flank shifts.

Country Status (3)

Country Link
AU (1) AU2001264433A1 (en)
NO (1) NO20003002L (en)
WO (1) WO2001094966A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8866347B2 (en) 2010-01-15 2014-10-21 Idex Asa Biometric image sensing
US9600704B2 (en) 2010-01-15 2017-03-21 Idex Asa Electronic imager using an impedance sensor grid array and method of making

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7190251B2 (en) 1999-05-25 2007-03-13 Varatouch Technology Incorporated Variable resistance devices and methods
US7697729B2 (en) 2004-01-29 2010-04-13 Authentec, Inc. System for and method of finger initiated actions
US7831070B1 (en) 2005-02-18 2010-11-09 Authentec, Inc. Dynamic finger detection mechanism for a fingerprint sensor
US8231056B2 (en) 2005-04-08 2012-07-31 Authentec, Inc. System for and method of protecting an integrated circuit from over currents
WO2007097979A2 (en) 2006-02-10 2007-08-30 Atrua Technologies, Inc. Systems using variable resistance zones and stops for generating inputs to an electronic device
US9235274B1 (en) 2006-07-25 2016-01-12 Apple Inc. Low-profile or ultra-thin navigation pointing or haptic feedback device
KR102245293B1 (en) 2012-04-10 2021-04-28 이덱스 바이오메트릭스 아사 Biometric Sensing
GB2540616B (en) 2015-07-24 2019-09-18 Keymed Medical & Ind Equipment Ltd Method and apparatus for inspection of moving parts in rotary systems

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0735502A2 (en) * 1995-03-29 1996-10-02 Trw Inc. Fingerprint detector using ridge resistance sensing array
WO1999043258A1 (en) * 1998-02-26 1999-09-02 Idex As Fingerprint sensor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0735502A2 (en) * 1995-03-29 1996-10-02 Trw Inc. Fingerprint detector using ridge resistance sensing array
WO1999043258A1 (en) * 1998-02-26 1999-09-02 Idex As Fingerprint sensor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8866347B2 (en) 2010-01-15 2014-10-21 Idex Asa Biometric image sensing
US9268988B2 (en) 2010-01-15 2016-02-23 Idex Asa Biometric image sensing
US9600704B2 (en) 2010-01-15 2017-03-21 Idex Asa Electronic imager using an impedance sensor grid array and method of making

Also Published As

Publication number Publication date
AU2001264433A1 (en) 2001-12-17
NO20003002L (en) 2001-12-10
NO20003002D0 (en) 2000-06-09
WO2001094966A2 (en) 2001-12-13

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