(19)
(11) EP 1 169 849 A1

(12)

(43) Date of publication:
09.01.2002 Bulletin 2002/02

(21) Application number: 00907785.0

(22) Date of filing: 03.03.2000
(51) International Patent Classification (IPC)7: H04N 1/32
(86) International application number:
PCT/GB0000/767
(87) International publication number:
WO 0056/059 (21.09.2000 Gazette 2000/38)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 12.03.1999 GB 9905777

(71) Applicant: University College London
London WC1E 6BT (GB)

(72) Inventors:
  • CROWCROFT, Jon
    London NW5 3DX (GB)
  • PERKINS, Colin
    London N 8HJ (GB)
  • BROWN, Ian
    Whitley Bay,Tyne and Wear NE26 3AF (GB)

(74) Representative: Beresford, Keith Denis Lewis et al
2-5 Warwick Court High Holborn
London WC1R 5DH
London WC1R 5DH (GB)

   


(54) A METHOD AND APPARATUS FOR GENERATING MULTIPLE WATERMARKED COPIES OF AN INFORMATION SIGNAL