(19)

(11)

EP 1 700 431 A1

(12)

(43) Date of publication: 13.09.2006 Bulletin 2006/37 (21) Application number: 03772442.4 (22) Date of filing: 10.11.2003

(51) International Patent Classification (IPC):  H04L 12/46(2006.01) G06F 13/40(2006.01) H04L 12/64(2006.01) (86) International application number: PCT/IB2003/005107 (87) International publication number: WO 2004/045152 (27.05.2004 Gazette 2004/22)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR (30) Priority: 12.11.2002 US 425848 P 06.02.2003 US 445372 P (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventors: SATO, Takashi Briarcliff Manor, NY 10510-8001 (US) TOGUCHI, Kazunobu Briarcliff Manor, NY 10510-8001 (US) (74) Representative: Groenendaal, Antonius W. M.  Philips Intellectual Property & Standards P.O. Box 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)