(19)

(11)

EP 1 831 450 A2

(12)

(88) Date of publication A3: 05.10.2006 (43) Date of publication: 12.09.2007 Bulletin 2007/37 (21) Application number: 05849943.5 (22) Date of filing: 21.12.2005

(51) International Patent Classification (IPC):  D06F 75/10(2006.01) D06F 81/08(2006.01) (86) International application number: PCT/IB2005/054348 (87) International publication number: WO 2006/067752 (29.06.2006 Gazette 2006/26)

(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: 22.12.2004 EP 04106873 (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventors: JIANG, Yong NL-5656 AA Eindhoven (NL) HAR, Tang, P. NL-5656 AA Eindhoven (NL) MA, Mun, T. NL-5656 AA Eindhoven (NL) JEENINGA, Pieter NL-5656 AA Eindhoven (NL) HO, Kat, T. NL-5656 AA Eindhoven (NL) (74) Representative: Damen, Daniel Martijn et al Philips Intellectual Property & Standards P.O. Box 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)