(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)
7
:
G11B
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