Fingerprint reading method and fingerprint reading apparatus

A red LED which emits red light and a green LED which emits green light are provided as light sources to emit detection beams onto a fingerprint collation surface. With a finger tip pressed against the fingerprint collation surface, only the red LED is enabled to emit light and reflected light from...

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Bibliographische Detailangaben
1. Verfasser: Iwai, Hajimu
Format: Patent
Sprache:eng
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