US Patent No: 5,325,442

Number of patents in Portfolio can not be more than 2000

Fingerprint sensing device and recognition system having predetermined electrode activation

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Abstract

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A Fingerprint sensing device and a recognition system having a row/column array of sense elements which are coupled to a drive circuit and a sense circuit by sets of row and column conductors, respectively. The sense elements are actively addressable by the drive circuit. Each sense element contains a sense electrode and a switching device (e.g., a TFT) for active addressing of that sense electrode. The sense electrodes of the sense elements are covered by insulating material adapted for receiving, directly thereon or on respective conductive pads overlying the sense electrodes, a finger. Capacitances resulting from individual finger surface portions in combination with sense electrodes are sensed by the sense circuit by applying a potential to the sense electrodes and measuring charging characteristics. In the fingerprint recognition system, an output from the sensing circuit is analyzed and characteristical data is compared with stored characteristical data for identification and verification purposes.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
U.S. PHILIPS CORPORATIONNEW YORK, NY1046

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Knapp, Alan G Crawley, GB2 56 1894

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (3)
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KEY CONCEPTS, INC. (1)
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* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (5)
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KABUSHIKI KAISHA TOSHIBA (2)
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* 2011/0215,817 OBSCURED FEATURE DETECTOR WITH MULTIPLE MODES OF OPERATION 5 2011
9,228,969 Obscured feature detector 0 2014
 
SYNAPTICS INCORPORATED (48)
7,099,496 Swiped aperture capacitive fingerprint sensing systems and methods 69 2001
7,463,756 Finger position sensing methods and apparatus 53 2005
* 2005/0244,038 Finger position sensing methods and apparatus 31 2005
8,077,935 Methods and apparatus for acquiring a swiped fingerprint image 41 2005
* 2005/0244,039 Methods and apparatus for acquiring a swiped fingerprint image 58 2005
7,460,697 Electronic fingerprint sensor with differential noise cancellation 52 2005
* 7,751,601 Fingerprint sensing assemblies and methods of making 52 2005
* 2006/0083,411 Fingerprint sensing assemblies and methods of making 57 2005
8,447,077 Method and apparatus for fingerprint motion tracking using an in-line array 11 2006
8,107,212 Apparatus and method for protecting fingerprint sensing circuitry from electrostatic discharge 36 2007
8,290,150 Method and system for electronically securing an electronic device using physically unclonable functions 26 2007
8,358,815 Method and apparatus for two-dimensional finger motion tracking and control 23 2007
8,276,816 Smart card system with ergonomic fingerprint sensor and method of using 20 2007
8,229,184 Method and algorithm for accurate finger motion tracking 24 2007
8,204,281 System and method to remove artifacts from fingerprint sensor scans 24 2007
8,131,026 Method and apparatus for fingerprint image reconstruction 38 2007
8,116,540 Apparatus and method for reducing noise in fingerprint sensing circuits 35 2008
8,005,276 Apparatus and method for reducing parasitic capacitive coupling and noise in fingerprint sensing circuits 41 2008
* 2009/0252,385 Apparatus and Method for Reducing Noise In Fingerprint Sensing Circuits 50 2008
8,175,345 Unitized ergonomic two-dimensional fingerprint motion tracking device and method 23 2008
8,391,568 System and method for improved scanning of fingerprint edges 17 2008
8,600,122 Apparatus and method for culling substantially redundant data in fingerprint sensing circuits 2 2009
8,278,946 Apparatus and method for detecting finger activity on a fingerprint sensor 18 2009
8,374,407 Live finger detection 17 2009
8,698,594 System, device and method for securing a user device component by authenticating the user of a biometric sensor by performance of a replication of a portion of an authentication process performed at a remote computing device 5 2009
8,716,613 Apparatus and method for electrostatic discharge protection 2 2010
* 8,224,044 Fingerprint sensing assemblies and methods of making 22 2010
* 2010/0272,329 Fingerprint sensing assemblies and methods of making 46 2010
9,001,040 Integrated fingerprint sensor and navigation device 2 2010
8,331,096 Fingerprint acquisition expansion card apparatus 18 2010
9,336,428 Integrated fingerprint sensor and display 0 2010
8,538,097 User input utilizing dual line scanner apparatus and method 4 2011
8,811,688 Method and apparatus for fingerprint image reconstruction 2 2012
8,520,913 Apparatus and method for reducing noise in fingerprint sensing circuits 11 2012
9,274,553 Fingerprint sensor and integratable electronic display 0 2012
8,867,799 Fingerprint sensing assemblies and methods of making 0 2012
8,315,444 Unitized ergonomic two-dimensional fingerprint motion tracking device and method 19 2012
8,593,160 Apparatus and method for finger activity on a fingerprint sensor 0 2012
8,693,736 System for determining the motion of a fingerprint surface with respect to a sensor surface 4 2012
9,195,877 Methods and devices for capacitive image sensing 0 2012
9,137,438 Biometric object sensor and method 0 2013
9,251,329 Button depress wakeup and wakeup strategy 0 2013
9,268,991 Method of and system for enrolling and matching biometric data 0 2013
9,152,838 Fingerprint sensor packagings and methods 0 2013
8,787,632 Apparatus and method for reducing noise in fingerprint sensing circuits 0 2013
8,811,723 User input utilizing dual line scanner apparatus and method 0 2013
RE45650 Apparatus and method for reducing parasitic capacitive coupling and noise in fingerprint sensing circuits 0 2013
8,929,619 System and method of image reconstruction with dual line scanner using line counts 0 2013
 
AMBIR TECHNOLOGY, INC. (1)
* 6,249,618 Circuit architecture and method for switching sensor resolution 21 1998
 
Indian Institute of Science (3)
* 9,158,408 Surfaces with embedded sensing and actuation networks using complementary-metal-oxide-semiconductor (CMOS) sensing chips 0 2010
* 2012/0007,586 Surfaces with Embedded Sensing and Actuation Networks Using Complementary-Metal-Oxide-Semiconductor (CMOS) Sensing Chips 0 2010
9,297,671 Surfaces with embedded sensing and actuation networks using complementary-metal-oxide-semiconductor (CMOS) sensing chips 0 2015
 
Open Invention Network, LLC (6)
7,565,329 Biometric financial transaction system and method 28 2001
* 2002/0019,811 Biometric financial transaction system and method 32 2001
7,970,678 Biometric financial transaction system and method 8 2009
8,831,994 System and method for tokenless biometric authorization of electronic communications 1 2010
8,452,680 Biometric financial transaction system and method 0 2011
8,630,933 Biometric financial transaction system and method 0 2013
 
SII SEMICONDUCTOR CORPORATION (1)
* 6,401,551 Fingerprint reading device 19 2000
 
ATMEL CORPORATION (2)
* 8,947,105 Capacitive coupling of bond pads 0 2011
* 2013/0141,118 Capacitive Coupling of Bond Pads 12 2011
* Cited By Examiner