NO20003002L - Speed calculation of fingerprint measurement using flank measurement - Google Patents

Speed calculation of fingerprint measurement using flank measurement

Info

Publication number
NO20003002L
NO20003002L NO20003002A NO20003002A NO20003002L NO 20003002 L NO20003002 L NO 20003002L NO 20003002 A NO20003002 A NO 20003002A NO 20003002 A NO20003002 A NO 20003002A NO 20003002 L NO20003002 L NO 20003002L
Authority
NO
Norway
Prior art keywords
measurement
sensors
flank
speed calculation
fingerprint
Prior art date
Application number
NO20003002A
Other languages
Norwegian (no)
Other versions
NO20003002D0 (en
Inventor
Stig Mathiassen
Svein Mathiassen
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
Priority to NO20003002A priority Critical patent/NO20003002L/en
Publication of NO20003002D0 publication Critical patent/NO20003002D0/en
Priority to AU2001264433A priority patent/AU2001264433A1/en
Priority to PCT/NO2001/000242 priority patent/WO2001094966A2/en
Publication of NO20003002L publication Critical patent/NO20003002L/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

Abstract

Denne oppfinnelsen angår en fremgangsmåte for bestemmelse av hastigheten til en overflatestruktur, særlig på et fingeroverflate, som beveger seg relativt til to i bevegelsesretningen plasserte sensorer, hvilke sensorer har en forutbestemt innbyrdes avstand og der sensorene måler variasjon i en forutbestemt egenskap ved overflatestrukturen. Fremgangsmåten er kjennetegnet ved gjentatte målinger av fingeroverflatens egenskaper og deteksjon av posisjonen til en forutbestemt verdi langs tidsaksen for hver sensor, og basert på disse posisjonene i tillegg til den kjente avstanden mellom sensorene beregning av overflatens hastighet i forhold til sensorene.This invention relates to a method for determining the velocity of a surface structure, in particular on a finger surface, which moves relative to two sensors located in the direction of movement, which sensors have a predetermined spacing and where the sensors measure variation in a predetermined property of the surface structure. The method is characterized by repeated measurements of the finger surface properties and detection of the position at a predetermined value along the time axis of each sensor, and based on these positions in addition to the known distance between the sensors calculation of the surface velocity relative to the sensors.

NO20003002A 2000-06-09 2000-06-09 Speed calculation of fingerprint measurement using flank measurement NO20003002L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NO20003002A NO20003002L (en) 2000-06-09 2000-06-09 Speed calculation of fingerprint measurement using flank measurement
AU2001264433A AU2001264433A1 (en) 2000-06-09 2001-06-08 Velocity measurement - flank shift
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.

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
NO20003002D0 NO20003002D0 (en) 2000-06-09
NO20003002L true NO20003002L (en) 2001-12-10

Family

ID=19911248

Family Applications (1)

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

Country Status (3)

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

Families Citing this family (10)

* 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
US8866347B2 (en) 2010-01-15 2014-10-21 Idex Asa Biometric image sensing
US8421890B2 (en) 2010-01-15 2013-04-16 Picofield Technologies, Inc. Electronic imager using an impedance sensor grid array and method of making
US20130279769A1 (en) 2012-04-10 2013-10-24 Picofield Technologies Inc. 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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW303441B (en) * 1995-03-29 1997-04-21 Trw Inc
NO307065B1 (en) * 1998-02-26 2000-01-31 Idex As fingerprint Sensor

Also Published As

Publication number Publication date
WO2001094966A2 (en) 2001-12-13
NO20003002D0 (en) 2000-06-09
AU2001264433A1 (en) 2001-12-17
WO2001094966A3 (en) 2002-05-02

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Legal Events

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FC2A Withdrawal, rejection or dismissal of laid open patent application