| 摘要 |
A system and method for inserting a watermark in encoded content are described including receiving encoded content, receiving at least one watermark unit comprising information on the position of an original value to be replaced by an alternative value and alternative values and replacing directly a number of bits starting at the position with one of the alternative values, wherein the alternative value has embedded therein watermark signals. An apparatus and method for generating watermark units are also described including selecting a position where a value in encoded content is to be replaced by an alternative value and calculating the alternative value. Further a system and method for replacing a watermark in encoded content are also described including receiving encoded content, receiving at least one watermark unit and replacing a number of bits starting at a position in the encoded content with a value, wherein the value is specified in the at least one watermark unit and further wherein the position is specified in the at least one watermark unit.
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