Patent №
US 7,127,065
Granted
2006-10-24
Filed 2000
Owner
U.S. PHILIPS CORP.
+1 more
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
09716907
In a method and arrangement for embedding and detecting a watermark in an information signal, the embedded watermark (Wi) is selected (13) from a plurality of watermarks (W1 . . . WN) in dependence upon a property P of the signal. An example of such a property is the distribution of luminance values of the current video image as calculated by an analysis circuit (12). The corresponding watermark detector performs the same operation: the watermark being looked for depends on the same signal property. It is achieved with the invention that the embedded watermark changes from time to time as a function of the information signal content, so that it cannot easily be hacked.
AI classification
Ownership
U.S. PHILIPS CORP.
assignment · 115210779
KONINKLIJKE PHILIPS ELECTRONICS N V
assignment · 182520675
Assignors
DEPOVERE, GERRT FLORIMOND GERARD, KALKER, ANTONIUS ADRIANUS CORNELIS MARIA, EYELEENS, JAN
On an employer assignment, the assignors are typically the inventors.