(19)

(11)

EP 1 386 442 A2

(12)

(88) Date of publication A3: 02.10.2003 (43) Date of publication: 04.02.2004 Bulletin 2004/06 (21) Application number: 02723772.6 (22) Date of filing: 03.04.2002

(51) International Patent Classification (IPC)7: H04L 9/00 (86) International application number: PCT/US2002/010691 (87) International publication number: WO 2003/010916 (06.02.2003 Gazette 2003/06)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 07.04.2001 US 282056 P (71) Applicant: Thomson Licensing S.A. 92648 Boulogne Cedex (FR)	(72) Inventor: RHOADS, Steven, C. Carmel, IN 46032 (US) (74) Representative: Berthier, Karine  THOMSON,46 Quai Alphonse Le Gallo 92648 Boulogne Cédex 92648 Boulogne Cédex (FR)