(19)

(11)

EP 1 831 777 A2

(12)

(88) Date of publication A3: 31.08.2006 (43) Date of publication: 12.09.2007 Bulletin 2007/37 (21) Application number: 05825658.7 (22) Date of filing: 12.12.2005

(51) International Patent Classification (IPC):  G06F 3/042(2006.01) (86) International application number: PCT/IB2005/054184 (87) International publication number: WO 2006/064450 (22.06.2006 Gazette 2006/25)

(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: 16.12.2004 EP 04106625 (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)

(72) Inventors: WEIJERS, Aldegonda, L. NL-5656 AA Eindhoven (NL) BAUMER, Stefan, M., B. NL-5656 AA Eindhoven (NL) DUIJVE, Rene NL-5656 AA Eindhoven (NL) MIMNAGH, Winslow, M. NL-5656 AA Eindhoven (NL) SCHEMMANN, Marcel, F., C. NL-5656 AA Eindhoven (NL) (74) Representative: Rolfes, Johannes Gerardus Albertus et al Philips Intellectual Property & Standards P.O. Box 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)