(19)

(11)

EP 1 844 456 A2

(12)

(88) Date of publication A3: 16.11.2006 (43) Date of publication: 17.10.2007 Bulletin 2007/42 (21) Application number: 06710683.1 (22) Date of filing: 17.01.2006

(51) International Patent Classification (IPC):  G08C 17/00(2006.01) (86) International application number: PCT/IB2006/050164 (87) International publication number: WO 2006/079939 (03.08.2006 Gazette 2006/31)

(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 LV MC NL PL PT RO SE SI SK TR (30) Priority: 28.01.2005 EP 05100585 (71) Applicants: Philips Intellectual Property & Standards GmbH 20099 Hamburg (DE) DE  Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventor: KNEISSLER, Jan, Philips I.P. &Standards GmbH 52066 Aachen (DE) (74) Representative: Groenendaal, Antonius W. M.  Philips Intellectual Property & Standards P.O. Box 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)