Watermarking of a variable bit-rate signal
AssigneeKoninklijke Philips Electronics N.V.
InventorGerrit Langelaar
Life of this patent
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Abstract
Methods and apparatus for embedding a watermark in an information signal (MPin) are described. The watermark embedding process is controlled by at least one embedding parameter. The value of the embedding parameter is dependent upon the bit-rate of the information signal (MPin).
Claims16
A method of embedding a watermark in an information signal, wherein the watermark embedding process is controlled by at least one embedding parameter, the value of the embedding parameter being dependent upon the bit-rate of the information signal.
An apparatus arranged to embed a watermark in an information signal, the apparatus comprising an embedding means arranged to embed a watermark in the information signal utilising an embedding process controlled by at least one embedding parameter, the value of the embedding parameter being dependent upon the bit-rate of the information signal.
A watermarked information signal, wherein the original information signal has been watermarked by a watermarking process controlled by at least one embedding parameter, the value of the embedding parameter having been dependent upon the bit-rate of the information signal.
A method of detecting a watermark in an information signal, the method comprising analysing an information signal that may potentially comprise a watermark, so as to detect the watermark, the analysing process being dependent upon the bit-rate of the information signal.
An apparatus for the detection of a watermark in an information signal, the apparatus comprising analysing means arranged to analyse an information signal that may potentially comprise a watermark, so as to detect the watermark, the operation of the analysing means being dependent upon the bit-rate of the information signal.
Dependencies are inferred from the claim text.