Title:
APPARATUS AND METHOD FOR IDENTIFYING FAKE FINGERPRINT BY USING IMPEDANCE
Document Type and Number:
WIPO Patent Application WO/2019/017621
Kind Code:
A1
Abstract:
The present invention relates to an apparatus and method for identifying a fake fingerprint by using impedance, which enables identification of a fingerprint or fake fingerprint by measuring an impedance value of a fake fingerprint made of silicon or gelatin. In the present invention, a fingerprint recognition module identifies, through a driver IC, an impedance value of an ultrasonic wave reflected from a finger and identifies a fake fingerprint on the basis of a changed impedance value, and determines a fake fingerprint by measuring an impedance value in an ultrasonic wave which is emitted from the fingerprint recognition module, collides with a fake fingerprint, and is then reflected therefrom. Therefore, the present invention can more accurately recognize a fingerprint than a conventional method of recognizing a fingerprint by distinguishing between x, y, z vectors thereof and, through accurate identification of a fake fingerprint, can prevent a harmful consequence which may be caused by an authentication of the fake fingerprint.
Inventors:
LEE SEUNG JIN (KR)
Application Number:
PCT/KR2018/007548
Publication Date:
January 24, 2019
Filing Date:
July 04, 2018
Export Citation:
Assignee:
LEE SEUNG JIN (KR)
International Classes:
G06K9/00
Foreign References:
| JP2005143804A | 2005-06-09 | |||
| KR20170048390A | 2017-05-08 | |||
| KR20170077988A | 2017-07-07 | |||
| KR20130060875A | 2013-06-10 | |||
| KR20100029604A | 2010-03-17 | |||
| JP2000123143A | 2000-04-28 | |||
| JPH10302047A | 1998-11-13 | |||
| JP2000194848A | 2000-07-14 | |||
| JP2000172833A | 2000-06-23 | |||
| JPH10370295A | ||||
| KR20170077988A | 2017-07-07 |
Other References:
See also references of EP 3657380A4
Attorney, Agent or Firm:
JI, Jeong Hun (KR)
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