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Memorial Tributes Volume 8 (1996) / Chapter Skim
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Marvin Camras
Pages 34-39

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From page 35...
... Marv, a junior in electrical engineering, recallecl reading of Danish Professor Vlademar Poulsen's experiments with magnetic wire recording. However, these experiments failed in the marketplace because whenever the wire twisted, the magnetic signal was changed, resulting in distortion in the audio playback.
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From page 36...
... In 1940 Camras joined IITRI and after further research, perfected "high-frequency bias," which greatly reduced noise and distortion. He continued to work on magnetic recording, bringing forth major improvements from 1940 to 1987.
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From page 37...
... His accomplishments include the discovery of high-frequency bias, magnetic coatings using acicular particles of gamma ferric oxide, clevelopment of multitrack tape recording, magnetic sound for motion pictures, and stereophonic sound reproduction. His inventions launched what has become a multibillion-clolIar electronic communications industry, and his patents have been licensed to more than one hundred manufacturers, including GE, Ampex, IBM, Wollensak, 3M, Kodak, and Sony.
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From page 38...
... Potts Memorial Award, the IEEE Consumer Electronics Award, the U.S. Camera Award for Outstanding Contributions to Motion Picture Photography, the Institute of Radio Engineers PGA Achievement Award, the IEEE Information Storage Award, anc3 the IIT Alumni Distinguished Service Award.
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Key Terms

  • electrical engineering
  • magnetic recording
  • motion picture
  • outstanding contributions
  • greatly reduced

  • evening courses
  • armour research
  • teach electrical
  • ferric oxide
  • alumni distinguished

  • illinois institute
  • intellectual capacity
  • anti metallurgical
  • inventors hall
  • national inventors

  • president george
  • multitrack tape
  • passed longitudinally
  • distinguished service
  • cloing woodworking

  • professor vlademar
  • storage award
  • major improvements
  • consumer electronics
  • patent stage

  • hard work
  • thread passed
  • achievement award
  • danish professor
  • magnetic coatings


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