George J. Fan
IBM
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Featured researches published by George J. Fan.
IEEE Transactions on Electronic Computers | 1963
George J. Fan; Eric Donath; Euval S. Barrekette; Armand Wirgin
The signal and the signal-to-noise ratio in a typical magneto-optic readout scheme intended for use in a high-capacity high-speed memory were analyzed. It was found that such a system does not yield higher signal levels and signal-to-noise ratios than are available with conventional magnetic head readout in such a peripheral memory. Calculations show that for 10-3-inch diameter bits recorded on an iron film in a system using an Osram XBO 150 high-pressure Xenon lamp, the signal-to-noise ratio at a megacycle transfer rate is in the neighborhood of 1. The maximum signal has about 300 photoelectrons per bit at the photocathode. It was concluded that although a magneto-optic system is impractical for such application, it may still be used in some display devices or in a medium-speed, medium-density fast access memory.
Archive | 1972
George J. Fan; Richard A. Toupin
Archive | 1975
George J. Fan; J.C. Slonczewski
Archive | 1976
George J. Fan; David Chan-Wai Lo; Joseph William Mitchell
Archive | 1974
Frederick Hayes Dill; George J. Fan; Richard A. Toupin
Archive | 1973
George J. Fan; Richard A. Toupin
Archive | 1969
George J. Fan
Archive | 1966
George J. Fan
Archive | 1968
George J. Fan
Archive | 1972
Hsu Chang; George J. Fan