US 12,189,733 B2
Biometric authentication apparatus and operation method thereof
Joo Yong Sim, Daejeon (KR); Hyung Wook Noh, Daejeon (KR); and Chang-Geun Ahn, Daejeon (KR)
Assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed by ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed on Apr. 23, 2021, as Appl. No. 17/239,005.
Claims priority of application No. 10-2020-0050048 (KR), filed on Apr. 24, 2020; and application No. 10-2021-0047311 (KR), filed on Apr. 12, 2021.
Prior Publication US 2021/0334348 A1, Oct. 28, 2021
Int. Cl. G06F 21/00 (2013.01); G06F 21/32 (2013.01); G06V 40/50 (2022.01); G06V 40/70 (2022.01); G06V 40/10 (2022.01)
CPC G06F 21/32 (2013.01) [G06V 40/50 (2022.01); G06V 40/70 (2022.01); G06F 2218/10 (2023.01); G06F 2221/2139 (2013.01); G06V 40/15 (2022.01)] 16 Claims
OG exemplary drawing
 
1. A biometric authentication apparatus, comprising:
one or more converters configured to convert a transmit signal of an electrical signal into a vibration signal of a mechanical signal and transmit the vibration signal vibrating within a set frequency range to a user;
one or more sensors configured to receive a biometric signal corresponding to the vibration signal from the user and convert the biometric signal into a receive signal of an electrical signal;
a processing device configured to extract anatomical feature information of the user from the receive signal and determine whether the user is a registered user based on the anatomical feature information; and
a memory configured to store a database for the registered user,
wherein the biometric signal is a frequency-based signal modified to include the anatomical feature information while the vibration signal passes through at least a portion of a body of the user, and
wherein the processing device includes:
a waveform generator configured to generate a reference waveform within the set frequency range and control the one or more converters to output the vibration signal depending on the reference waveform;
a demodulator configured to receive the receive signal from the one or more sensors and demodulate the receive signal based on the reference waveform;
a filter configured to filter the demodulated receive signal; and
a micro-controller configured to process the filtered receive signal to extract the anatomical feature information, classify the user based on the anatomical feature information, and compare the classified user with the registered user to determine whether the classified user corresponds to the registered user.