(19)

(11)

EP 2 619 940 A2

(12)

(88) Date of publication A3: 18.05.2012 (43) Date of publication: 31.07.2013 Bulletin 2013/31 (21) Application number: 11758473.0 (22) Date of filing: 20.09.2011

(51) International Patent Classification (IPC):  H04L 9/32(2006.01) (86) International application number: PCT/EP2011/066361 (87) International publication number: WO 2012/038449 (29.03.2012 Gazette 2012/13)

(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: 20.09.2010 NO 20101310 (71) Applicant: Perid AS 3510 Hønefoss (NO)	(72) Inventor: KARL ERIK, Steinbakk N-3502 Hønefoss (NO) (74) Representative: Helliesen, Even O.  Tandbergs Patentkontor AS P.O. Box 1570 Vika N-0118 Oslo N-0118 Oslo (NO)