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Issue No.09 - September (1979 vol.28)
pp: 693
S.C. Lee , School of Electrical Engineering and Computing Sciences, University of Oklahoma
ABSTRACT
In 1971 Kinsbury and Rayner, publishing under the title "Digital Filtering Using Logarithmic Arithmetic" [1] disclosed a sign-plus-logarithm number system, and a means of performing addition through single dimensional lookup using the formula c = b + F(a - b). The system was demonstrated on a computer. In 1975 Swartzlander and Alexopoulos disclosed Kinsbury's logarithmic arithmetic as "The Sign/Logarithm Number System" [2]. In 1977, without knowledge of prior art, we reinvented the wheel a third time, dubbing it "Focus," after the focus of resolution around the zero origin [3]. We wish now to acknowledge Kinsbury and Rayner as the pioneer authors, and also Swartzlander and Alexopoulos as prior to our publication.
INDEX TERMS
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CITATION
S.C. Lee, A.D. Edgar, "Addendum to "The Focus Number System"", IEEE Transactions on Computers, vol.28, no. 9, pp. 693, September 1979, doi:10.1109/TC.1979.1675442
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