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Home | Seminars and Symposia | Past seminars/symposia: Wednesday, November 6, 2002

DTC Seminar Series

Multimedia Distribution: General Overview and Media Security


Ahmed H. Tewfik
University of Minnesota
Electrical and Computer Engineering

Wednesday, November 6, 2002
12:00 pm

402 Walter Library

This talk, will give an overview of some aspects of multimedia distribution, including coding for maximizing resource utilization through compression and efficient encoding to deal with channel losses and server limitations, distributed file systems and media tracking for security and personalization. The focus will be particularly on media security and present some recent attacks on security schemes and potential solutions.


Ahmed H Tewfik was born in Cairo, Egypt on October 21, 1960. He received his B.Sc. degree from Cairo University, Cairo Egypt, in 1982 and his M.Sc., E.E. and Sc.D. degrees from the Massachusetts Institute of Technology, Cambridge, MA, in 1984, 1985 and 1987, respectively. Dr. Tewfik has worked at Alphatech, Inc., Burlington, MA in 1987. He is the E. F. Johnson professor of Electronic Communications with the department of Electrical Engineering at the University of Minnesota. He served as a consultant to MTS Systems, Inc., Eden Prairie, MN and Rosemount, Inc., Eden Prairie, MN and worked with Texas Instruments and Computing Devices International. From August 1997 to August 2001, he was the President and CEO of Cognicity, Inc., an entertainment marketing software tools publisher that he co-founded, on partial leave of absence from the University of Minnesota. His current research interests are in signal processing for high performance computing I/O, multimedia and short-range high bit rate wireless communications. Prof. Tewfik is a Fellow of the IEEE. He was a Distinguished Lecturer of the IEEE Signal Processing Society in 1997 - 1999. He received the IEEE third Millennium award in 2000. He was invited to be a principal lecturer at the 1995 IEEE EMBS summer school. He was awarded the E. F. Johnson professorship of Electronic Communications in 1993, a Taylor faculty development award from the Taylor foundation in 1992 and an NSF research initiation award in 1990. He delivered plenary lectures at the 1994 IEEE International Conference on Acoust. Speech and Signal Proc. (ICASSP '94), the 1999 IEEE-EURASIP Workshop on Nonlinear Signal and Image Processing, the 1999 IEEE Turkish Signal Processing Conference (SIU '99), the 1st IEEE International Symposium on Signal Processing and Information Theory (2001) and SSGRR2002 International Conference on Advances in Infrastructure for Electronic Business, Science, and Education on the Internet. He gave an invited tutorial on watermarking at the 1998 IEEE International Conference on Image Processing, and another on wavelets at the 1994 IEEE workshop on Time- Frequency and Time-Scale Analysis. He was selected to be the first Editor-in-Chief of the IEEE Signal Processing Letters from 1993 to 1999, is a past associate editor of the IEEE Trans. on Signal Proc., was a guest editor of two special issue of that journal on wavelets and their applications and is a guest editor of a special issue of the IEEE Trans. on Multimedia on multimedia databases.