l  Konkuk University, College of Telecommunications, Department of Internet and Media Engineering, Seoul, Korea, Professor, Sep. 2003 ~ Present

l  Samsung Electronics, Principal Engineer, Digital Media R&D Center, Suwon, Kyeongki-do, Korea, May 2003 ~ Aug. 2003
- Project leader for Scalable Video Coding project
- Project leader for DVDP software optimization project
- Project leader for Media Solution project
- Error concealment for video transmission

l  KLA-Tencor Corporation, High Speed Image and Data Processing, Algorithm Group, Milpitas, CA, USA, Senior Software Engineer,    Aug. 2000 ~ Mar. 2002
- Development of next generation wafer inspection algorithm, Hierarchical Local Automatic  Threshold (HLAT) algorithm
- Implementation of HLAT algorithm in C language
- Simulation and improvement of HLAT algorithm

l  Lucent Technologies, Bell Laboratories, Advanced Video & Data Networking Department, Murray Hill, NJ, USA, Mar. 1999 ~ July 2000
- Development of Synchronous Optical Network (SONET) chip
- Functional verification of Transport Add Drop Multiplexing (TADM) chip

l  Sarnoff Corporation, HDTV and Multimedia Division, Princeton, New Jersey, Member of Technical Staff, Dec. 1996 ~ Mar. 1999

-   Implementation and simulation of DCT domain decoder, picture composition, and image resizing using MPEG-2 decoder program using C language

-   Algorithm development and simulation for compressed domain processing of MPEG-2

-   Modeling and simulation of transport stream system target decoder (T-STD) for MPEG-2 decoder buffer modeling using C language

l  The University of Texas at Austin, Electrical and Computer Engineering, Laboratory for Image and Video Engineering, Graduate Research Assistant, Austin, Texas, Sep. 1993 ~ Dec. 1996

l  Schlumberger Austin Research, Part-time and Summer Intern, Austin, Texas, Sep. 1994 ~ May 1995

l  Tracor Applied Sciences, Summer intern, Austin, Texas, June 1993 ~ Aug. 1993

l  Korean Broadcasting Systems, Research and Development Engineer, Seoul, Korea, Mar. 1988 ~ July 1991

-        Research on HDTV and video compression

-        Software development for HDTV using C language

-        Hardware design and implementation of 2-dimensional digital filter for HDTV

l  Korea Advanced Institute of Science and Technology (KAIST), Visual Communications Laboratory, Research Assistant, Seoul, Korea, July 1986 ~ Feb. 1988