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:
Jan. 06, 2009
Filed:
Feb. 13, 2007
Frederick Schuessler, Baiting Hollow, NY (US);
Frederick Schuessler, Baiting Hollow, NY (US);
Symbol Technologies, Inc., Holtsville, NY (US);
Abstract
Described are a system and method for verifying a self-authenticating document. First, upon a request for verification of the document, a characteristic digital data 'CDD' is extracted from the document. An image of at least a predetermined portion of the document is obtained. The image is divided into a predetermined number of pixel groups and each pixel group includes a plurality of pixels. Pixel characteristic data is determined for each pixel. A pixel group classification data is determined for each pixel group as a function of the pixel characteristics data of at least one pixel in the pixel group. A further CDD for the image is generated as a function of the pixel group classification data and a location of the corresponding pixel group in the image. The document is verified if the CDD is substantially identical to the further CDD.