公开(公告)号：US20180181734A1

公开(公告)日：2018-06-28

申请号：US15851612

申请日：2017-12-21

Applicant: Samsung Electronics Co., Ltd

Inventor： Maksim Alexeevich VILENSKII ,  Andrey Vladimirovich KLETSOV ,  Aleksei Andreevich GAVRON ,  Alexander Gennadyevich CHERNOKALOV

IPC: G06F21/32 ,  A61B5/1172 ,  A61B5/00 ,  G06K9/00 ,  G06F3/044

CPC classification number: G06F21/32 ,  A61B5/0531 ,  A61B5/1172 ,  A61B5/6897 ,  G06F3/0416 ,  G06F3/044 ,  G06K9/0002 ,  G06K9/0012

Abstract: The disclosure relates to biometric authentication of a user, in particular, to a method for determining whether to allow user access based on a user input at electronic device, the method comprising: detecting a touch by an object on a touch-sensitive area of an electronic device, in which a plurality of electrode pairs are mounted, the plurality of electrode pairs including a first set of electrode pairs and a second set of electrode pairs; determining a subset of the first set of electrode pairs that are in contact with a part of the object; receiving electrical signals from each pair of the determined subset; calculating impedance values of respective parts of the object on the basis of the received electrical signals; determining a ratio of the calculated impedance values for each pair of electrode pairs disposed on mutually perpendicular lines from said the determined subset, and, if a first impedance value for one electrode pair included in electrode pairs disposed on the mutually perpendicular lines is greater than a second impedance value for the other electrode pair in the electrode pairs, the ratio of the calculated impedance values is a ratio of the first impedance to the second impedance; selecting two pairs of electrode pairs disposed on the mutually perpendicular lines with the maximum ratio of the calculated impedance values; and if the maximum ratio exceeds a predetermined threshold, identifying the object as a living tissue object, and allow access on the electronic device.

公开(公告)号：US20180018492A1

公开(公告)日：2018-01-18

申请号：US15434707

申请日：2017-02-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Maksim Alexeevich VILENSKII ,  Mikhail Vyacheslavovich POPOV ,  Aleksei Andreevich GAVRON

IPC: G06K9/00

CPC classification number: G06K9/001 ,  G06K9/0004 ,  G06K9/00107 ,  G06K2009/00939

Abstract: The present disclosure relates to the field of biometric identification of a user, in particular, to a system and method of identifying a user. The method of identifying a user includes: detecting a portion of a user's finger in contact with a touch-sensitive region of a device; and collecting data relating to a fingerprint of the user from the user's finger for a period of time and obtaining a plurality of frames from the data. The method further includes determining whether the user is an authorized user of the device, based on a ridge pattern, a sweat gland pattern, and dynamics of blood circulation in the user's finger as indicated by the data. The method provides an enhanced security system that can be integrated in a user's mobile device to protect against fake biometric characteristics in access control systems.