(19)

(11)

EP 1 815 643 A1

(12)

(43) Date of publication: 08.08.2007 Bulletin 2007/32 (21) Application number: 05799528.4 (22) Date of filing: 04.11.2005

(51) International Patent Classification (IPC):  H04L 12/28(2006.01) (86) International application number: PCT/IB2005/053619 (87) International publication number: WO 2006/048842 (11.05.2006 Gazette 2006/19)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 05.11.2004 US 625669 P (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventor: CHALLAPALI, Kiran Briarcliff Manor, NY 10510-8001 (US) (74) Representative: Ledeboer, Johannes Albertus  Philips Intellectual Property & Standards Postbus 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)