(19)

(11)

EP 2 550 594 A2

(12)

(88) Date of publication A3: 17.11.2011 (43) Date of publication: 30.01.2013 Bulletin 2013/05 (21) Application number: 11715454.2 (22) Date of filing: 21.03.2011

(51) International Patent Classification (IPC):  G06F 7/58(2006.01) (86) International application number: PCT/EP2011/054262 (87) International publication number: WO 2011/117197 (29.09.2011 Gazette 2011/39)

(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: 22.03.2010 EP 10275029 (71) Applicant: Astrium Limited Stevenage Hertfordshire SG1 2AS (GB)	(72) Inventor: FARRUGIA, Lewis Stevenage Hertfordshire SG1 2AS (GB) (74) Representative: Hewett, Jonathan Michael Richard  Venner Shipley LLP 200 Aldersgate London EC1A 4HD London EC1A 4HD (GB)