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(11)

EP 2 417 733 A2

(12)

(88) Date of publication A3: 20.01.2011 (43) Date of publication: 15.02.2012 Bulletin 2012/07 (21) Application number: 10761903.3 (22) Date of filing: 09.04.2010

(51) International Patent Classification (IPC):  H04L 12/26(2006.01) H04L 12/16(2006.01) (86) International application number: PCT/KR2010/002211 (87) International publication number: WO 2010/117242 (14.10.2010 Gazette 2010/41)

(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 SM TR (30) Priority: 10.04.2009 KR 20090031497 10.04.2009 US 168388 P (71) Applicant: LG Electronics Inc. Seoul 150-721 (KR)

(72) Inventors: KIM, Hyun Sang Changwon-si Kyungsangnam-do 641-110 (KR) KWON, Eui Hyeok Changwon-si Kyungsangnam-do 641-110 (KR) KANG, Hae Yong Changwon-si Kyungsangnam-do 641-110 (KR) KIM, Yong Tae Changwon-si Kyungsangnam-do 641-110 (KR) LEE, Koon Seok Changwon-si Kyungsangnam-do 641-110 (KR) (74) Representative: Palmer, Jonathan R. et al Boult Wade Tennant Verulam Gardens 70 Gray's Inn Road London WC1X 8BT London WC1X 8BT (GB)