(19)

(11)

EP 2 724 178 A2

(12)

(88) Date of publication A3: 07.03.2013 (43) Date of publication: 30.04.2014 Bulletin 2014/18 (21) Application number: 12741382.1 (22) Date of filing: 15.06.2012

(51) International Patent Classification (IPC):  G01S 15/04(2006.01) H05B 37/02(2006.01) G01S 15/88(2006.01) (86) International application number: PCT/IB2012/053024 (87) International publication number: WO 2012/176101 (27.12.2012 Gazette 2012/52)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 21.06.2011 US 201161499414 P (71) Applicant: Koninklijke Philips N.V. 5656 AE Eindhoven (NL)	(72) Inventors: VANGEEL, Jurgen, Mario NL-5656 AE Eindhoven (NL) VAN ENDERT, Tony, Petrus NL-5656 AE Eindhoven (NL) HUANG, Jinfeng NL-5656 AE Eindhoven (NL) (74) Representative: van Eeuwijk, Alexander Henricus Waltherus  Philips Intellectual Property & Standards P.O. Box 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)