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Class Information
Number: 382/122
Name: Image analysis > Applications > Personnel identification (e.g., biometrics) > Using a signature > Sensing speed or acceleration only
Description: Subject matter wherein the characteristic of the writing sample used is only speed (velocity, that is, the first derivative of the values of the pen movement) or acceleration (change in velocity, that is, the second derivative of the values of the pen movement) exerted by the writer with a writing instrument during the writing of the sample.

Patents under this class:

Patent Number Title Of Patent Date Issued
8488839 Computer program and apparatus for motion-based object extraction and tracking in video Jul. 16, 2013
8317609 Method, apparatus and system for determining the presence of a user at a device such as a gaming machine Nov. 27, 2012
8164446 Method and device for detecting fake skin prints Apr. 24, 2012
8047914 Player verification system Nov. 1, 2011
8031909 Method and apparatus for producing 3D model of an underground environment Oct. 4, 2011
8005273 Systems and methods for identifying a document with forged information in non-signature information fields Aug. 23, 2011
7925062 Image processing apparatus, image processing method, signature registration program, and storage medium Apr. 12, 2011
7889889 Method and device for registering a handwritten personal signature and for recognizing the authenticity of the signature Feb. 15, 2011
7865018 Personalized implicit and explicit character shape adaptation and recognition Jan. 4, 2011
7796819 Apparatus and method for character recognition using acceleration sensor Sep. 14, 2010
7742628 Apparatus and method for recognizing spatial writing and recording medium storing the method Jun. 22, 2010
7706581 Fingerprint detection using sweep-type imager with optoelectronic speed sensor Apr. 27, 2010
7706580 Systems and methods for identifying a document with forged information Apr. 27, 2010
7694145 Indicating status for digital signatures Apr. 6, 2010
7646893 Biometric information apparatus narrowing biometric information of registered users used when authorizing a candidate based on features extracted from the biometric information of the candidat Jan. 12, 2010
7580572 Spatial motion recognition system and method using a virtual handwriting plane Aug. 25, 2009
7474771 Handwriting trajectory recognition system and method Jan. 6, 2009
7472134 Image distributing system Dec. 30, 2008
7454042 Apparatus for online signature verification using pattern transform technique and method therefor Nov. 18, 2008
7436989 Generation, verification and reproduction of a digitized writing Oct. 14, 2008
7406599 Indicating status for digital signatures Jul. 29, 2008
7155038 Handwriting identification system, writing implement for identifying handwriting and method for identifying handwriting Dec. 26, 2006
7119932 Image scanning system and method Oct. 10, 2006
6744915 Image identification apparatus and method of identifying images Jun. 1, 2004
6703633 Method and apparatus for authenticating a signature Mar. 9, 2004
6625314 Electronic pen device and character recognition method employing the same Sep. 23, 2003
6546134 System for assessment of fine motor control in humans Apr. 8, 2003
6334003 Data input system for enabling data input by writing without using tablet or the like Dec. 25, 2001
6307955 Electronic signature management system Oct. 23, 2001
6201903 Method and apparatus for pen-based faxing Mar. 13, 2001
6018591 Scribble matching Jan. 25, 2000
5933514 Method for dynamic reconstruction of handwritten data Aug. 3, 1999
5781661 Handwritting information detecting method and apparatus detachably holding writing tool Jul. 14, 1998
5771485 Apparatus and method for detecting a velocity of a moving object Jun. 23, 1998
5768417 Method and system for velocity-based handwriting recognition Jun. 16, 1998
5768387 Key authentication method and key authentication apparatus Jun. 16, 1998
5202930 High precision on-line signature dynamic verification system Apr. 13, 1993
5111512 Method for signature verification May. 5, 1992
5101437 Method and apparatus for comparing a test handwritten signature with a reference signature by using information relative to curvilinear and angular velocities of the signature Mar. 31, 1992
5077802 Apparatus and method for digitizing and segmenting a handwriting movement based on curvilinear and angular velocities Dec. 31, 1991
5027414 Method and apparatus for capturing information in drawing or writing Jun. 25, 1991
4901358 Method of comparing a handwriting with a reference writing Feb. 13, 1990
4701960 Signature verification Oct. 20, 1987
4397033 Device for measuring characteristic parameters of the speed of handwriting Aug. 2, 1983
4345239 Apparatus for determining pen acceleration Aug. 17, 1982
3983535 Signature verification method and apparatus Sep. 28, 1976
3962679 Handwriting identification technique Jun. 8, 1976
3955178 Signature authentication system May. 4, 1976

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