Information on some of past ISOCCs can be found from the following sites.
ISOCC started in 2004, enhancing its predecessors, Korean domestic SoC conference.

2012, Ramada Plaza Hotel, Jeju, Korea
2011, Ramada Plaza Hotel, Jeju, Korea
2010, Songdo ConvensiA, Incheon, Korea
2009, BEXCO Convention Halls, Busan, Korea
2008, BEXCO Convention Halls, Busan, Korea
2007, COEX Conference Center, Seoul, Korea