RECORD CARRIER WITH VISUAL WATERMARK ON DATA AREA

摘要

A record carrier ( 1 ) comprising a data area ( 3 ) with a pattern of substantially parallel tracks ( 2 ) for storing data. The record carrier ( 1 ) comprises at least first and second areas, the tracks in the first areas ( 4 ) comprising a first periodic deflection and the tracks in the second areas ( 5 ) comprising a second periodic deflection. A visual contrast between the respective areas is realized by a difference between the first and the second periodic deflection. The visual contrast represents a visual watermark.