Biometric authentication apparatus and operation method thereof

An operation method of a biometric authentication apparatus, the operation method comprising:

• outputting a vibration signal vibrating within a set frequency range depending on a reference waveform to a user;
• receiving a biometric signal corresponding to the vibration signal from the user;
• extracting anatomical feature information of the user from the biometric signal;
• classifying the user based on the anatomical feature information;
• determining whether the user is a registered user;
• and
• completing user authentication in response to determining that the user is the registered user,
• wherein the biometric signal is measured by a sensor and 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.

A biometric authentication apparatus, comprising:

• a vibration signal transceiver configured to transmit a vibration signal to a user and receiving a biometric signal corresponding to the vibration signal;
• an authentication module configured to extract anatomical feature information of the user based on the biometric 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 vibration signal transceiver includes:
• a conversion circuit configured to convert a transmit signal of an electrical signal into the vibration signal of a mechanical signal and transmit the vibration signal vibrating within a set frequency range to the user;
• and
• a sensing circuit configured to receive the biometric signal corresponding to the vibration signal from the user and convert the biometric signal into a receive signal of an electrical signal,
• 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.