NO20003007L - Fingerprint sensor speed calculation - Google Patents

Fingerprint sensor speed calculation

Info

Publication number
NO20003007L
NO20003007L NO20003007A NO20003007A NO20003007L NO 20003007 L NO20003007 L NO 20003007L NO 20003007 A NO20003007 A NO 20003007A NO 20003007 A NO20003007 A NO 20003007A NO 20003007 L NO20003007 L NO 20003007L
Authority
NO
Norway
Prior art keywords
sensors
fingerprint sensor
speed calculation
calculation
sensor speed
Prior art date
Application number
NO20003007A
Other languages
Norwegian (no)
Other versions
NO20003007D0 (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 NO20003007A priority Critical patent/NO20003007L/en
Publication of NO20003007D0 publication Critical patent/NO20003007D0/en
Priority to PCT/NO2001/000241 priority patent/WO2001094892A2/en
Priority to AU2001264432A priority patent/AU2001264432A1/en
Publication of NO20003007L publication Critical patent/NO20003007L/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Image Input (AREA)

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 overflate - strukturen. Fremgangsmåten kjennetegnes ved gjentatte målinger av fingerover- flatens egenskap og beregning av posisjonen til minst en ekstremalverdi, dvs maksimums- eller minimumsverdi, 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, particularly 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 surface of the finger surface and the calculation of the position of at least one extreme value, ie the maximum or minimum value, along the time axis of each sensor, and based on these positions in addition to the known distance between the sensors calculation of surface velocity in relation to to the sensors.

NO20003007A 2000-06-09 2000-06-09 Fingerprint sensor speed calculation NO20003007L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NO20003007A NO20003007L (en) 2000-06-09 2000-06-09 Fingerprint sensor speed calculation
PCT/NO2001/000241 WO2001094892A2 (en) 2000-06-09 2001-06-08 Velocity measurement - center of gravity
AU2001264432A AU2001264432A1 (en) 2000-06-09 2001-06-08 Velocity measurement - center of gravity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20003007A NO20003007L (en) 2000-06-09 2000-06-09 Fingerprint sensor speed calculation

Publications (2)

Publication Number Publication Date
NO20003007D0 NO20003007D0 (en) 2000-06-09
NO20003007L true NO20003007L (en) 2001-12-10

Family

ID=19911253

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20003007A NO20003007L (en) 2000-06-09 2000-06-09 Fingerprint sensor speed calculation

Country Status (3)

Country Link
AU (1) AU2001264432A1 (en)
NO (1) NO20003007L (en)
WO (1) WO2001094892A2 (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
FR2894049B1 (en) * 2005-11-25 2008-01-04 Atmel Grenoble Soc Par Actions DEVICE FOR REACTIVATING AN APPARATUS SET IN SLEEP MODE
TWI380211B (en) 2006-02-10 2012-12-21 Forest Assets Ii Ltd Liability Company A system generating an input useful to an electronic device and a method of fabricating a system having multiple variable resistors
US9235274B1 (en) 2006-07-25 2016-01-12 Apple Inc. Low-profile or ultra-thin navigation pointing or haptic feedback device
US8421890B2 (en) 2010-01-15 2013-04-16 Picofield Technologies, Inc. Electronic imager using an impedance sensor grid array and method of making
US8866347B2 (en) 2010-01-15 2014-10-21 Idex Asa Biometric image sensing
US20130279769A1 (en) 2012-04-10 2013-10-24 Picofield Technologies Inc. Biometric Sensing

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5864296A (en) * 1997-05-19 1999-01-26 Trw Inc. Fingerprint detector using ridge resistance sensor
NO307065B1 (en) * 1998-02-26 2000-01-31 Idex As fingerprint Sensor

Also Published As

Publication number Publication date
WO2001094892A2 (en) 2001-12-13
WO2001094892A3 (en) 2002-05-02
NO20003007D0 (en) 2000-06-09
AU2001264432A1 (en) 2001-12-17

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application