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WO2002095439A3 - Surface capacitance sensor system using buried stimulus electrode - Google Patents

Surface capacitance sensor system using buried stimulus electrode Download PDF

Info

Publication number
WO2002095439A3
WO2002095439A3 PCT/US2002/016533 US0216533W WO02095439A3 WO 2002095439 A3 WO2002095439 A3 WO 2002095439A3 US 0216533 W US0216533 W US 0216533W WO 02095439 A3 WO02095439 A3 WO 02095439A3
Authority
WO
WIPO (PCT)
Prior art keywords
electrodes
sensor
sensor system
buried
surface capacitance
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US2002/016533
Other languages
French (fr)
Other versions
WO2002095439A2 (en
Inventor
Thomas L Andrade
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Silable Inc
Original Assignee
Silable Inc
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 Silable Inc filed Critical Silable Inc
Priority to EP02737174A priority Critical patent/EP1412765A4/en
Priority to JP2002591858A priority patent/JP4102672B2/en
Priority to AU2002310124A priority patent/AU2002310124A1/en
Publication of WO2002095439A2 publication Critical patent/WO2002095439A2/en
Publication of WO2002095439A3 publication Critical patent/WO2002095439A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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

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)

Abstract

A surface capacitance sensor system is implemented as an array of sensor electrodes (21-23, 31-33, 41-43) near the surface of the integrated circuit and an array of stimulus electrodes below the sensor electrodes. Rows of stimulus electrodes are driven by sources (12, 13) while the voltages at the respective sensor electrodes are measured. Voltage measurements (16) at each sensor electrode allow the surface capacitance at each sensor electrode location to be determined. The capacitance data is used to determine the positions of target electrodes above the array surface as required in the location fingerprint artifacts.
PCT/US2002/016533 2001-05-22 2002-05-22 Surface capacitance sensor system using buried stimulus electrode Ceased WO2002095439A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP02737174A EP1412765A4 (en) 2001-05-22 2002-05-22 Surface capacitance sensor system using buried stimulus electrode
JP2002591858A JP4102672B2 (en) 2001-05-22 2002-05-22 Surface capacitive sensor system using implantable stimulation electrodes
AU2002310124A AU2002310124A1 (en) 2001-05-22 2002-05-22 Surface capacitance sensor system using buried stimulus electrode

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29285801P 2001-05-22 2001-05-22
US60/292,858 2001-05-22

Publications (2)

Publication Number Publication Date
WO2002095439A2 WO2002095439A2 (en) 2002-11-28
WO2002095439A3 true WO2002095439A3 (en) 2003-05-01

Family

ID=23126513

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/016533 Ceased WO2002095439A2 (en) 2001-05-22 2002-05-22 Surface capacitance sensor system using buried stimulus electrode

Country Status (5)

Country Link
EP (1) EP1412765A4 (en)
JP (1) JP4102672B2 (en)
AU (1) AU2002310124A1 (en)
TW (1) TWI225932B (en)
WO (1) WO2002095439A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8194047B2 (en) * 2009-11-16 2012-06-05 Au Optronics Corporation Multi-channel touch panel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5869791A (en) * 1995-04-18 1999-02-09 U.S. Philips Corporation Method and apparatus for a touch sensing device having a thin film insulation layer about the periphery of each sensing element
US6191593B1 (en) * 1997-12-17 2001-02-20 Stmicroelectronics, Inc. Method for the non-invasive sensing of physical matter on the detection surface of a capacitive sensor
US6289114B1 (en) * 1996-06-14 2001-09-11 Thomson-Csf Fingerprint-reading system
US6317508B1 (en) * 1998-01-13 2001-11-13 Stmicroelectronics, Inc. Scanning capacitive semiconductor fingerprint detector

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4353056A (en) * 1980-06-05 1982-10-05 Siemens Corporation Capacitive fingerprint sensor
JPS5987583A (en) * 1982-11-11 1984-05-21 Sony Corp Position detector
US4526043A (en) * 1983-05-23 1985-07-02 At&T Bell Laboratories Conformable tactile sensor
US5010772A (en) * 1986-04-11 1991-04-30 Purdue Research Foundation Pressure mapping system with capacitive measuring pad
GB2244164A (en) * 1990-05-18 1991-11-20 Philips Electronic Associated Fingerprint sensing
JP3098635B2 (en) * 1992-09-30 2000-10-16 新光電気工業株式会社 Shape inspection method and shape inspection device
JP3418479B2 (en) * 1995-05-11 2003-06-23 日本電信電話株式会社 Fingerprint input device
US5963679A (en) * 1996-01-26 1999-10-05 Harris Corporation Electric field fingerprint sensor apparatus and related methods

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5869791A (en) * 1995-04-18 1999-02-09 U.S. Philips Corporation Method and apparatus for a touch sensing device having a thin film insulation layer about the periphery of each sensing element
US6289114B1 (en) * 1996-06-14 2001-09-11 Thomson-Csf Fingerprint-reading system
US6191593B1 (en) * 1997-12-17 2001-02-20 Stmicroelectronics, Inc. Method for the non-invasive sensing of physical matter on the detection surface of a capacitive sensor
US6317508B1 (en) * 1998-01-13 2001-11-13 Stmicroelectronics, Inc. Scanning capacitive semiconductor fingerprint detector

Also Published As

Publication number Publication date
EP1412765A4 (en) 2008-02-06
AU2002310124A1 (en) 2002-12-03
JP4102672B2 (en) 2008-06-18
TWI225932B (en) 2005-01-01
JP2004528572A (en) 2004-09-16
WO2002095439A2 (en) 2002-11-28
EP1412765A2 (en) 2004-04-28

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