S.Ölçer, "55 Years of Progress in Digital Magnetic Recording–.."
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  • S.Ölçer, "55 Years of Progress in Digital Magnetic Recording–.."

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Faculty of Engineering and Natural Sciences


55 Years of Progress in Digital Magnetic Recording –
A Signal Processing Perspective

Sedat Ölçer
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