(19)

(11)

EP 1 779 600 A1

(12)

(43) Date of publication: 02.05.2007 Bulletin 2007/18 (21) Application number: 05777289.9 (22) Date of filing: 03.08.2005

(51) International Patent Classification (IPC):  H04L 12/28(2006.01) (86) International application number: PCT/IB2005/052592 (87) International publication number: WO 2006/016329 (16.02.2006 Gazette 2006/07)

(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: 10.08.2004 CN 200410056537 (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventors: SUN, Li, Philips Electronics China Shanghai 200070 (CN) DU, Yonggang, Philips Electronics China Shanghai 200070 (CN) (74) Representative: Ledeboer, Johannes Albertus  Philips Intellectual Property & Standards Postbus 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)