Patents by Inventor Alfred W. Zinn

Alfred W. Zinn has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Digital frequency multiplier
    Patent number: 4669099
    Abstract: A square wave with a 50% duty cycle which has frequency twice that of an input square wave also having a 50% duty cycle is obtained by generating from the incoming square wave two waveforms having 75% duty cycles with the two waveforms 180.degree. out of phase with each other. The two waveforms are combined in an ANDing operation to obtain an output waveform which is a square wave with twice the frequency of the incoming square wave. In similar fashion, using additional similar circuits and gating, tripling is possible.
    Type: Grant
    Filed: October 15, 1985
    Date of Patent: May 26, 1987
    Assignee: The Singer Company
    Inventor: Alfred W. Zinn