Patent ID: 7013023
Filing Date: 2006-03-14
Classification: G06T,H03M,H04L,H04N

Abstract:
1. A method of sending a digital signal, comprising the steps of: inserting a watermark, which is known to a receiving end, in the digital signal, so as to obtain a watermarked digital signal; encoding the watermarked digital signal by means of an encoder, so as to obtain an encoded watermarked signal which can be decoded by means of a parametrisable iterative decoder; and sending the encoded, watermarked signal, wherein the sent, encoded watermarked signal is processable by the receiving end to obtain the watermark, to compare the obtained watermark to a known watermark, and to modify at least one parameter of the decoder according to a result of the comparison between the watermark obtained from the sent, encoded watermarked signal and the known watermark.