Patent ID: 7000113

Claim:
A system comprising: a recorder, including: reading means for reading from an information carrier, a content of a medium mark, said content comprising a first bitpattern; generating means for generating a second bitpattern according to a predefined relationship of with the first bitpattern; encoder means for embedding a watermark containing the second bitpattern in user information to be recorded; and recording means for recording the watermarked user information on the information carrier for storage, wherein the medium mark is contained in a wobble of a track of the information carrier, the wobble representing the first bit pattern; the system further comprising: a player including: first reading means for reading the content of the medium mark, said content comprising the first bitpattern; second reading means for reading the embedded watermark containing the second bitpattern from the user information; verifying means for establishing a verification of the relationship between the second bit pattern and the first bit pattern; and enabling means for enabling playback of the recorded watermarked user information from the information carrier based on said verification.