Professor Kwang Suk Park received B.S. degree, M.S. degree and Ph.D. degree in Department of Electronics Engineering from Seoul National University, Korea in 1980, in 1982 and in 1985 respectively. He is currently a professor in the Department of Biomedical Engineering in Seoul National University since he joined the department in 1985 as a founding staff member. He was a chairman in the Department of Biomedical Engineering and was also a Director of Advanced Biometric Research Center in Seoul National University. He has served for Korean Society of Medical and Biological Engineering as a member of board committee and as a president. His main research area is biological signal measurement and processing for the diagnosis. Recently he is focusing his research interest on nonintrusive measurements for sleep monitoring and ubiquitous healthcare.