Fingerprint sensing devices and systems incorporating such

Details Fingerprint sensing devices and systems incorporating such Fingerprint sensing devices and systems incorporating such

1998-04-21

2000-08-22

Couso, Jose L.

Image analysis

Applications

Personnel identification

250556, G06K 900, G06K 1100

Patent

active

061084387

ABSTRACT:
A fingerprint sensing device comprises an array of sense elements (12) which each include a sense electrode (33), providing in combination with an overlying fingerprint part a capacitance (35), and first and second diode devices (30, 31) connected respectively between the sense electrode and associated ones (18, 20) of first and second sets (e.g. row and column) address conductors. An address circuit (22, 24) connected to the address conductors biases the diode devices in a respective address period such that a potential is applied via the first address conductor and the first diode device to the sense electrode and thereafter stored charge, indicative of the capacitance, is transferred via the second diode device to the second address conductor. The device offers fast, reliable, scanning and can conveniently be implemented using thin film technology for low cost and compactness.

REFERENCES:
patent: 5325442 (1994-06-01), Knapp
patent: 5446290 (1995-08-01), Fujieda et al.
patent: 5635723 (1997-06-01), Fujieda et al.

Affiliated with

Also associated with

Rating

Fingerprint sensing devices and systems incorporating such does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fingerprint sensing devices and systems incorporating such, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fingerprint sensing devices and systems incorporating such will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-590200