Method for the identification of persons

Details Method for the identification of persons Method for the identification of persons

1999-04-29

2001-05-08

Lateef, Marvin M. (Department: 3737)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S443000, C600S447000

Reexamination Certificate

active

06228029

ABSTRACT:

BACKGROUND OF THE INVENTION
The invention is directed to a method for the identification of persons with ultrasound.
U.S. Pat. No. 4,564,019 discloses a method for the measurement of characteristics of living tissue by ultrasound. DE 4 226 865 A1 discloses an ultrasound diagnostics apparatus for dermatology.
Imaging methods for the recognition of the ridge structure of skin surfaces are disclosed by U.S. Pat. No. 5,224,174 and WO 95/12354.
U.S. Pat. No. 4,977,601, EP 0 619 095 A1, U.S. Pat. No. 5,218,644, U.S. Pat. No. 5,258,922, EP 0 402 779 A2 and WO 94/24937 disclose methods that utilize the amount of the spatial frequency spectrum of the ridge structure or of other cell structures (“epithelium structure”) not described in greater detail in the applications. These structures are acquired by a transducer section and are averaged over a plurality of transducer sections for the identification of persons.
WO 94/010434 discloses a method that combines ultrasound waves with electromagnetic waves.
WO 95/06262 discloses a method that works with inverse excitation.
SUMMARY OF THE INVENTION
It is an object of the invention to specify a method for the identification of persons that assures a reliable personal identification and that is simple to realize.
According to the present invention, a method is provided for detection of skin structures of persons including the steps of utilizing ultrasound to detect the skin structures and wherein the ultrasound detects a lateral position of channels of sweat glands in predetermined skin layers.
The invention is described further on the basis of three Figures.


REFERENCES:
patent: 5143063 (1992-09-01), Fellner
patent: 5587533 (1996-12-01), Schneider et al.
patent: 5709206 (1998-01-01), Teboul

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