(19)

(11)

EP 1 709 843 A1

(12)

(43) Date of publication: 11.10.2006 Bulletin 2006/41 (21) Application number: 05702723.7 (22) Date of filing: 19.01.2005

(51) International Patent Classification (IPC):  H05B 41/392(2006.01) H03M 1/12(2006.01) G01R 19/25(2006.01) (86) International application number: PCT/IB2005/050224 (87) International publication number: WO 2005/072026 (04.08.2005 Gazette 2005/31)

(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: 20.01.2004 US 537801 P (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventors: KEITH, William L. Briarcliff Manor, New York 10510-8001 (US) GROUEV, George L. Briarcliff Manor, New York 10510-8001 (US) CROUSE, Kent E. Briarcliff Manor, New York 10510-8001 (US) (74) Representative: Bosma, Rudolphus Hubertus Antonius  Philips Intellectual Property & Standards P.O. Box 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)