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:
Sep. 16, 2003
Filed:
Sep. 02, 1999
James E. Smith, Bruceton Mills, WV (US);
Robert P. M. Craven, Morgantown, WV (US);
Kenneth E. Vance, Morgantown, WV (US);
Curtis Duhn, Rochester, NY (US);
Franz A. Pertl, Morgantown, WV (US);
West Virginia University, Morgantown, WV (US);
Abstract
A method and apparatus for verifying the authenticity of a document relative to a previously programmed document are disclosed. The method provides a broadband light source; illuminates a document with the light source; collects reflected light; converts it into a corresponding electrical signal or signals; digitizes the electrical signals; and prepares a spectral signature of the document for further analysis. The spectral signature can also be normalized to account for variations in analyzed documents caused by soiling and fading. The method also provides for comparing a previously programmed and stored spectral signature to the spectral signature of a test document using a matching value to indicate whether the test document is authentic or not. The apparatus provides a device for application of the method for verifying document authenticity.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile