Faculty of Engineering and Natural Sciences
55 Years of Progress in Digital Magnetic Recording –
A Signal Processing Perspective
IBM Zurich Research Laboratory
CH-8803 Rueschlikon, Switzerland
Storage has been called the unsung hero of Information Technology because of the huge decreases in price/MByte achieved during the past three decades that few had predicted. During the 1990s, for example, the average capacity of PC hard-disk drives increased more than 100-fold, whereas prices of subsystems fell dramatically. Maintaining such performance growth involves increasingly complex signal processing, which in turn poses complex technical challenges.
In this talk, we will highlight the historical trends in capacity, areal density and cost of magnetic disk and tape storage systems since their introduction, starting 55 years ago. We will provide a survey of the basic concepts underlying the signal processing and coding techniques that have made the explosive capacity growth of the last 35 years possible. We will also give a perspective of future developments in this field.
Sedat Ölçer received a Diploma of electrical engineering and a Ph.D. degree from the Swiss Federal Institute of Technology, Lausanne (EPFL), Switzerland, in 1978 and 1982, respectively. From 1982 to 1984, he was a research associate at the Information Systems Laboratory of the Stanford University, Stanford, CA, and at Yale University, New Haven, CT. In 1984, he joined the IBM Zurich Research Laboratory, Rueschlikon, Switzerland, where he has been working on digital transmission techniques for magnetic recording channels, and high-speed data communications for local area networking and network access. His research work covers digital communications, signal processing and coding, with applications to broadband network access and storage systems. He was named an IEEE Fellow in Nov. 2005 and is a Distinguished Lecturer of the IEEE Communications Society.
June 16, 2006, 13:40, FENS G032