(19)
(11) EP 1 076 902 A2

(12)

(88) Date of publication A3:
20.08.1998

(43) Date of publication:
21.02.2001 Bulletin 2001/08

(21) Application number: 97933829.0

(22) Date of filing: 05.08.1997
(51) International Patent Classification (IPC)7G11B 17/22, G11B 5/09, G11B 15/52, G11B 20/10, G11B 27/22, G11B 20/12, H04N 5/76, A63H 3/33
(86) International application number:
PCT/IL9700/266
(87) International publication number:
WO 9808/180 (26.02.1998 Gazette 1998/08)
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB IE IT LI LU NL SE

(30) Priority: 05.08.1996 US 689209
06.03.1997 US 38080 P

(71) Applicant: T.T.R. Technologies Ltd.
Kfar-Saba 44425 (IL)

(72) Inventors:
  • SOLLISH, Bruce, David
    44854 Emmanuel (IL)
  • HOWE, Dennis
    Tucson, AZ 85750 (US)
  • ISRAEL, Henry, Marshall
    51482 Bnei Brak (IL)

(74) Representative: Hillier, Peter et al
Reginald W. Barker & Co.,Cliffords InnFetter Lane
London EC4A 1BY
London EC4A 1BY (GB)

   


(54) DIGITAL OPTICAL MEDIA AUTHENTICATION AND COPY PROTECTION METHOD