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:
Apr. 09, 2002
Filed:
May. 06, 1999
Jürgen Zeller, Ismaning, DE;
Heinz Gerhäuser, Waischenfeld, DE;
Abstract
In a method for detecting a manipulation performed on digital information the erroneous determination of a manipulation during processing disturbances is prevented by subdividing the information into information subunits from each of which an identification is derived which is assigned to the respective information subunit. After processing the information subunits together with their identifications, potentially manipulated information subunits are determined on the basis of their identifications. This enables the whole of the information to be classified as manipulated if at least two information subunits which are correlated with respect to time or location have been determined to have been potentially manipulated.