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:
Dec. 01, 2015
Filed:
Sep. 25, 2012
Giesecke & Devrient Gmbh, Munich, DE;
Shanchuan Su, Neubiberg, DE;
Norbert Holl, Germering, DE;
GIESECKE & DEVRIENT GMBH, Munich, DE;
Abstract
A method for checking the production quality of a prescribed optical security feature in or on a prescribed portion of a value document on the basis of pixel data of pixels of an image of the prescribed portion which are respectively associated with places in or on the portion and render optical properties of the value document at the places whether a first number or share of those pixels, whose pixel data, according to a first prescribed criterion, lie within a first reference region prescribed for the security feature exceeds a first minimum hit value, and whether a first scatter of the pixel data of those pixels lying within the first reference region for the pixel data according to the first criterion exceeds a first minimum scatter prescribed for the security feature. A quality signal from the check represents an indication of a sufficient printing quality according to certain criteria.