United States Patent 3,488,452
January 6, 1970

Record Speed Compensation For Systems For Processing Recorder Information
William F. Gunning
R. Glen

Filed May 24, 1965
Image of US PATENT 3,488,452

Abstract of the Disclosure

The disclosure concerns frequency domain tape speed compensation wherein overall stability for a given channel is related to the stability of the data discriminator alone, as compared with conventional systems wherein the overall stability is related to the sum of the stabilities of both the data discriminator and the reference frequency discriminator.
Figure descriptions: cover graphic

  • Figure 1 is a block diagram showing a data handling system embodying the invention.
  • Figure 8 is a detailed showing of the auxiliary or reference frequency delay loop of the data discriminator but directed to a modified form of the reference frequency delay loop.

 Citations [54]:
3,181,133 04/1965 Seitner 3,017,616 01/1962 Runyan 3,253,237 05/1966 Runyan
National Museum of American History
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