(19)

(11)

EP 2 069 978 A2

(12)

(43) Date of publication: 17.06.2009 Bulletin 2009/25 (21) Application number: 08793635.7 (22) Date of filing: 02.09.2008

(51) International Patent Classification (IPC):  G06F 17/30(2006.01) (86) International application number: PCT/KR2008/005142 (87) International publication number: WO 2009/031793 (12.03.2009 Gazette 2009/11)

(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 MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 03.09.2007 KR 20070088760 (71) Applicant: Korea Electronics Technology Institute Bundang-gu, Seongnam-si Gyeonggi-do 463-816 (KR)	(72) Inventors: LIM, Tae Bum Yongin-si Gyeonggi-do 446-566 (KR) LEE, Jong Sul Yongin-si Gyeonggi-do 446-938 (KR) LEE, Seok Pil Seongnam-si Gyeonggi-do 463-805 (KR) YOON, Kyoung Ro Seoul 135-270 (KR) SHIN, Saim Seoul 122-020 (KR) (74) Representative: Molnia, David  df-mp Fünf Höfe Theatinerstrasse 16 80333 München 80333 München (DE)