| 摘要 |
Disclosed is a method of embedding a fingerprint identifying media content into a media transmission signal used for transmission of said media content. In order to achieve that the embedded fingerprint survives all kinds of analogue and digital processing such as compression, the fingerprint (FP) extracted ( 21 ) from the content is converted ( 23 ) into the same signal format as used for the transmission of the content. For example, the fingerprint derived from a video signal generated by a security camera ( 1 ) is converted into image pixels. The fingerprint is subsequently accommodated ( 24 ) in a part of the signal being provided, but not being used, for transmission of content. For example, the fingerprint of video images is accommodated in the vertical blanking interval of a television signal. The converted fingerprint may also replace a small part of the original content.
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