Personal verification system

Details Personal verification system Personal verification system

1995-12-18

1998-05-26

Horabik, Michael

Communications: electrical

Continuously variable indicating

With meter reading

382126, 382124, 382116, 382182, 34082534, G06F 704, G06K 900, G06K 918, G07D 700

Patent

active

057572780

ABSTRACT:
A plurality of linear electrodes, which are perpendicular to the longitudinal direction of a finger to be measured, are arranged on a substrate. A porous film is placed on the electrodes. The porous film repels water, such as waterdrop, but transmits water vapor. When the finger is pressed against the porous film, water (sweat) diffused through sweat pores of projected portions of the finger surface is further diffused through holes of the porous film and reaches to the electrode located just under the projected portions of the finger surface. At this time, the resistance of the portion between the electrodes, to which the water reaches, is lowered due to ions existing in the water. Resistances across adjacent electrodes are serially read and synthesized, thereby obtaining fingerprint information.

REFERENCES:
patent: 4032889 (1977-06-01), Nassimbene
patent: 4353056 (1982-10-01), Tsikos
patent: 4577345 (1986-03-01), Abramov
patent: 5218472 (1993-06-01), Jozefowicz et al.
patent: 5429006 (1995-07-01), Tamori
Masahiro Takeda, et al. "Finger Image Identification Method For Personal Verification" Proceedings 10th International Conference on Pattern Recognition, vol. 1 (pp. 761-766), 1990.

Affiliated with

Also associated with

Rating

Personal verification system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Personal verification system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Personal verification system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1966622