(19)

(11)

EP 1 723 555 A1

(12)

(43) Date of publication: 22.11.2006 Bulletin 2006/47 (21) Application number: 05702854.0 (22) Date of filing: 01.02.2005

(51) International Patent Classification (IPC):  G06F 17/30(2006.01) (86) International application number: PCT/IB2005/050415 (87) International publication number: WO 2005/083592 (09.09.2005 Gazette 2005/36)

(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 MC NL PL PT RO SE SI SK TR (30) Priority: 24.02.2004 CN 200410007668 (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventors: CHEN, Xin, Philips Electronics China Shanghai 200070 (CN) ZENG, Yongqin, Philips Electronics China Shanghai 200070 (CN) CHEN, Ningjiang, Philips Electronics China Shanghai 200070 (CN) (74) Representative: Groenendaal, Antonius W. M. et al Philips Intellectual Property & Standards P.O. Box 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)