(19)

(11)

EP 2 420 061 A1

(12)

(43) Date of publication: 22.02.2012 Bulletin 2012/08 (21) Application number: 09779309.5 (22) Date of filing: 17.04.2009

(51) International Patent Classification (IPC):  H04N 7/26(2006.01) H04N 7/50(2006.01) (86) International application number: PCT/EP2009/054596 (87) International publication number: WO 2010/118780 (21.10.2010 Gazette 2010/42)

(84) Designated Contracting States: 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 SE SI SK TR (71) Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) 164 83 Stockholm (SE)	(72) Inventors: SPICER, Ryan Basingstoke Hampshire RG22 4PJ (GB) BOCK, Alois Martin Eastleigh Hampshire SO53 4RH (GB) (74) Representative: Chisholm, Geoffrey David et al Ericsson Limited Patent Unit Optical Networks Unit 4 Midleton Gate Guildford Business Park Guildford, Surrey GU2 8SG Guildford, Surrey GU2 8SG (GB)