(19)
(11)
EP 1 145 243 A2
(12)
(43)
Date of publication:
17.10.2001
Bulletin 2001/42
(21)
Application number:
99932846.1
(22)
Date of filing:
07.07.1999
(51)
International Patent Classification (IPC)
7
:
G11B
20/00
(86)
International application number:
PCT/EP9904/766
(87)
International publication number:
WO 0004/549
(
27.01.2000
Gazette 2000/04)
(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:
14.07.1998
US 92727 P
15.06.1999
US 333628
(71)
Applicant:
Koninklijke Philips Electronics N.V.
5621 BA Eindhoven (NL)
(72)
Inventor:
EPSTEIN, Michael, A.
NL-5656 AA Eindhoven (NL)
(74)
Representative:
Faessen, Louis Marie Hubertus
INTERNATIONAAL OCTROOIBUREAU B.V.,Prof. Holstlaan 6
5656 AA Eindhoven
5656 AA Eindhoven (NL)
Remarks:
WIPO A3 publication data is not currently available.
(54)
COPY PROTECTION BY MESSAGE ENCRYPTION