摘要 |
Disclosed are methods and systems for embedding and for detecting digital watermarks in information signals. The method of embedding a watermark comprises the steps of providing a watermark secret (106), embedding (107) a digital watermark in an information signal (101) where said embedding is controlled by the watermark secret, calculating (102) a digital fingerprint (103) from the information signal, and storing (104) the calculated digital fingerprint as a reference digital fingerprint and storing, in relation to the reference digital fingerprint, an identifier data item from which the watermark secret can be derived. |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;KALKER, ANTONIUS, A., C., M.;VAN DER VEEN, MINNE |
发明人 |
KALKER, ANTONIUS, A., C., M.;VAN DER VEEN, MINNE |