The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 2025
Filed:
Jun. 24, 2022
Nec Corporation, Tokyo, JP;
Takayuki Arakawa, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
The present invention reduces the risk of user biometric information being leaked to a third party. A biometric authentication device () receives an echo signal (response signal) from a client device. The echo signal is formed as a result of an inspection signal being applied to an authentication subject by a client device, and the inspection signal being transmitted into the body or to the surface of the body of the authentication subject and changing into the echo signal. The biometric authentication device () comprises: an inspection signal generation unit () that generates the same inspection signal as the client device; a transmission characteristic calculation unit () that calculates, from the inspection signal and the echo signal, a transmission characteristic of the authentication subject; and an authentication unit () that authenticates the authentication subject by comparing a preregistered first transmission characteristic and a calculated second transmission characteristic.