RAISING DETECTABILITY OF ADDITIONAL DATA IN A MEDIA SIGNAL HAVING FEW FREQUENCY COMPONENTS
摘要
The present invention relates to a methods, devices, a media signal as well as an information storage medium related to embedding additional data in a media signal. A first adding unit ( 12 ) mixes the media signal (x) with a noise signal (n) in order to provide a modified media signal (x+n), and a combiner unit ( 14 ) combines additional data (w) with the modified media signal (x+n) through multiplying the modified media signal with the additional data in order to provide a host modifying media signal (m<SUB>w</SUB>). In this way the additional data can be detected with a higher certainty in an output signal (y) if the media signal (x) includes few frequency components.
申请公布号
EP1639826(A1)
申请公布日期
2006.03.29
申请号
EP20040736871
申请日期
2004.06.15
申请人
KONINKLIJKE PHILIPS ELECTRONICS, N.V.
发明人
VAN DER VEEN, MINNE;LEMMA, AWEKE, N.;APREA, JAVIER, F.;BRUEKERS, ALPHONS, A., M., L.