| Patent Number |
Title Of Patent |
Date Issued |
| 7577842 |
Methods of scrambling and unscrambling a video signal, a system, an encoder, a decoder, a broadc |
August 18, 2009 |
| The invention relates in particular to a method of scrambling a video signal using an encryption key for controlling access to audiovisual information. The video signal is scrambled by applying a tattooing function to the video signal by using a marking key derived from the encryptio |
| 7555137 |
Method of watermarking a color image by vectorial approach, method of detecting a mark of waterm |
June 30, 2009 |
| A method of watermarking a color image that has at least three components is provided. Such a method of watermarking includes an insertion step of a mark of watermarking, on at least one point of the image, according to an insertion rule taking into account the relative position of at le |
| 7415127 |
System and method of watermarking a video signal and extracting the watermarking from a video si |
August 19, 2008 |
| This method comprises the following steps of applying a watermarking function to motion vectors calculated by estimation of movement between images of a video signal, followed by a step of generating the watermarked video signal by compensating movement with the aid of the watermarke |
| 7386147 |
Method for the watermarking of a video sequence with adaptive selection of the watermark inserti |
June 10, 2008 |
| A method for the watermarking of a sequence of video images implements a step for the insertion of at least one watermarking bit into at least one motion vector obtained by motion estimation between two images of said sequence, so as to obtain at least one watermarked motion vector. The |
