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(11)

EP 1 767 067 A1

(12)

(43) Date of publication: 28.03.2007 Bulletin 2007/13 (21) Application number: 05748050.1 (22) Date of filing: 15.06.2005

(51) International Patent Classification (IPC):  H05B 41/392(2006.01) (86) International application number: PCT/IB2005/051981 (87) International publication number: WO 2006/006085 (19.01.2006 Gazette 2006/03)

(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: 08.07.2004 CN 200410063622 (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventors: ZHANG, Xichun Shanghai 200233 (CN) HU, Fengkang Shanghai 200233 (CN) ZHU, Shihai Shanghai 200233 (CN) (74) Representative: Golla, Anke Lucia  Philips Intellectual Property & Standards GmbH Postfach 50 04 42 52088 Aachen 52088 Aachen (DE)