(19)

(11)

EP 3 304 776 A1

(12)

(43) Date of publication: 11.04.2018 Bulletin 2018/15 (21) Application number: 16729329.9 (22) Date of filing: 07.06.2016

(51) International Patent Classification (IPC):  H04H 20/22(2008.01) H04H 20/26(2008.01) (86) International application number: PCT/GB2016/051677 (87) International publication number: WO 2016/198847 (15.12.2016 Gazette 2016/50)

(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 Designated Validation States: MA MD (30) Priority: 08.06.2015 GB 201509902 (71) Applicant: Imagination Technologies Limited Kings Langley, Hertfordshire WD4 8LZ (GB)	(72) Inventor: GRIFFITHS, Hugh Kings Langley Hertfordshire WD4 8LZ (GB) (74) Representative: CMS Cameron McKenna Nabarro Olswang LLP  Cannon Place 78 Cannon Street London EC4N 6AF London EC4N 6AF (GB)