Image analysis – Applications – Personnel identification
Reexamination Certificate
2011-01-04
2011-01-04
Werner, Brian P (Department: 2624)
Image analysis
Applications
Personnel identification
Reexamination Certificate
active
07864992
ABSTRACT:
The present invention relates to a fingerprint sensor element, comprising a sensor electrode formed in an upper conducting layer, a lower electrode formed in a lower conducting layer and at least one insulating layer between the upper conducting layer and the lower conducting layer. It further comprises a charge amplifier having a negative and a positive input terminal and an output terminal. An upper side of the fingerprint sensor electrode is arranged for facing a finger and a lower side is arranged for facing the lower electrode, and the fingerprint sensor electrode and the lower electrode are arranged in such a way that a capacitance is formed between them. The sensor electrode is arranged for being connected to the negative input terminal of the charge amplifier, and the lower electrode is arranged for being connected to the output terminal of the charge amplifier.
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Hammersberg Johan
Riedijk Frank Robert
Fingerprint Cards AB
Schwegman Lundberg & Woessner, P.A.
Werner Brian P
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