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. 09, 2010
Filed:
Oct. 30, 2006
Juergen Herre, Buckenhof, DE;
Ralph Kulessa, Hilpoltsein, DE;
Sascha Disch, Fuerth, DE;
Karsten Linzmeier, Erlangen, DE;
Christian Neubauer, Nuremberg, DE;
Frank Siebenhaar, Nuerberg, DE;
Juergen Herre, Buckenhof, DE;
Ralph Kulessa, Hilpoltsein, DE;
Sascha Disch, Fuerth, DE;
Karsten Linzmeier, Erlangen, DE;
Christian Neubauer, Nuremberg, DE;
Frank Siebenhaar, Nuerberg, DE;
Abstract
According to an inventive scheme for introducing a watermark into an information signal, the information signal is at first transferred from a time representation to a spectral/modulation spectral representation). The information signal is then manipulated in the spectral/modulation spectral representation in dependence on the watermark to be introduced to obtain a modified spectral/modulation spectral representation, and subsequently an information signal provided with a watermark is formed based on the modified spectral/modulation spectral representation. An advantage is that, due to the fact that the watermark is embedded and/or derived in the spectral/modulation spectral representation or range, traditional correlation attacks as are used in watermark methods based on a spread-band modulation cannot succeed easily.