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:
May. 24, 2016
Filed:
Aug. 17, 2012
Stefan Wabnik, Oldenburg, DE;
Joerg Pickel, Happurg, DE;
Bert Greevenbosch, Rotterdam, NL;
Bernhard Grill, Lauf, DE;
Ernst Eberlein, Grossenseebach, DE;
Giovanni Del Galdo, Martinroda, DE;
Stefan Kraegeloh, Erlangen, DE;
Reinhard Zitzmann, Baiersdorf, DE;
Tobias Bliem, Erlangen, DE;
Marco Breiling, Erlangen, DE;
Juliane Borsum, Erlangen, DE;
Stefan Wabnik, Oldenburg, DE;
Joerg Pickel, Happurg, DE;
Bert Greevenbosch, Rotterdam, NL;
Bernhard Grill, Lauf, DE;
Ernst Eberlein, Grossenseebach, DE;
Giovanni Del Galdo, Martinroda, DE;
Stefan Kraegeloh, Erlangen, DE;
Reinhard Zitzmann, Baiersdorf, DE;
Tobias Bliem, Erlangen, DE;
Marco Breiling, Erlangen, DE;
Juliane Borsum, Erlangen, DE;
Abstract
A watermark generator for providing a watermark signal in dependence on binary message data includes an information processor configured to provide, in dependence on information units of the binary message data, a first time-frequency domain representation, values of which represent the binary message data. The watermark generator also includes a differential encoder configured to derive a second time-frequency domain representation from the first time-frequency-domain representation, such that the second time-frequency-domain representation includes a plurality of values, wherein a difference between two values of the second time-frequency-domain representation represents a corresponding value of the first time-frequency-domain representation, in order to obtain a differential encoding of the values of the first time-frequency-domain representation. The watermark generator also includes a watermark signal provider configured to provide the watermark signal on the basis of the second time-frequency-domain representation.