(19)

(11)

EP 3 027 802 A1

(12)

(43) Date of publication: 08.06.2016 Bulletin 2016/23 (21) Application number: 14748146.9 (22) Date of filing: 23.07.2014

(51) International Patent Classification (IPC):  D06F 87/00(2006.01) (86) International application number: PCT/EP2014/065769 (87) International publication number: WO 2015/014679 (05.02.2015 Gazette 2015/05)

(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 Designated Extension States: BA ME (30) Priority: 01.08.2013 EP 13178943 (71) Applicant: Koninklijke Philips N.V. 5656 AE Eindhoven (NL)	(72) Inventors: CHUA, Hee Keng NL-5656 AE Eindhoven (NL) TIEW, Hock Soon NL-5656 AE Eindhoven (NL) (74) Representative: Freeke, Arnold  Philips Intellectual Property & Standards High Tech Campus 5 5656 AE Eindhoven 5656 AE Eindhoven (NL)