The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 20, 2007
Filed:
Oct. 15, 2002
Applicants:
Manfred Greschitz, Graz, AT;
Klaus Gruber, Graz, AT;
Franz Helminger, Graz, AT;
Franz Wolf, Grambach, AT;
Inventors:
Manfred Greschitz, Graz, AT;
Klaus Gruber, Graz, AT;
Franz Helminger, Graz, AT;
Franz Wolf, Grambach, AT;
Assignee:
Infineon Technologies AG, Munich, DE;
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2006.01); B32B 5/02 (2006.01); B32B 27/04 (2006.01); B32B 27/12 (2006.01); G01N 25/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a capacitive biometric sensor, in particular, a fingerprint sensor, to determine the maximum contrast that can actually be achieved in that application in the gray scale values, in particular, of a fingerprint (dynamic resolution of the sensor), at least one measurement point composed of a dielectric material is integrated above each of the sensor electrodes on a sensor array.