METHOD AND APPARATUS FOR USE OF A WATERMARK AND A RECEIVER DEPENDENT REFERENCE FOR THE PURPOSE OF COPY PROTECTION - Patent 1034648

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EP 1 034 648 A1

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(43)	Date of publication:
	13.09.2000 Bulletin 2000/37

(21)	Application number: 99932875.0

(22)	Date of filing: 09.07.1999

(51)	International Patent Classification (IPC)⁷: H04L 29/06

(86)	International application number:
	PCT/EP9904/930

(87)	International publication number:
	WO 0004/688 (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

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Priority:

14.07.1998 US 92725 P
27.05.1999 US 320806

(71)	Applicant: Koninklijke Philips Electronics N.V.
	5621 BA Eindhoven (NL)

(72)	Inventor:
	EPSTEIN, Michael NL-5656 AA Eindhoven (NL)

(74)	Representative: Faessen, Louis Marie Hubertus et al
	INTERNATIONAAL OCTROOIBUREAU B.V.,Prof. Holstlaan 6 5656 AA Eindhoven 5656 AA Eindhoven (NL)

(54)	METHOD AND APPARATUS FOR USE OF A WATERMARK AND A RECEIVER DEPENDENT REFERENCE FOR THE PURPOSE OF COPY PROTECTION