Method and apparatus for authenticating fingerprints using reflected wave

Fingerprint sensing technology of a fingerprint sensor for authenticating whether a fingerprint of a subject is forged or falsified by using a waveform reflected from the subject, such as an ultrasonic wave. The fingerprint authentication apparatus includes a fingerprint sensor configured to apply a...

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Hauptverfasser: Ahn, Jae Hyun, Kim, Yong Kook, Song, Ci Moo, Youn, Keun Jung
Format: Patent
Sprache:eng
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Zusammenfassung:Fingerprint sensing technology of a fingerprint sensor for authenticating whether a fingerprint of a subject is forged or falsified by using a waveform reflected from the subject, such as an ultrasonic wave. The fingerprint authentication apparatus includes a fingerprint sensor configured to apply a wave signal to a subject and receive a wave signal reflected from the subject, a local waveform detector configured to detect local waveforms by dividing the received wave signal by a reception time, and a forgery detection unit configured to count the number of local waveforms and detect whether a fingerprint provided from the subject is forged or not based on the counted number of local waveforms.