Patents by Inventor Joseph Martin Cusack

Joseph Martin Cusack 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).

  • Method and apparatus for determining a signal of uniform period
    Patent number: 4121211
    Abstract: The periods of several successive cycles of an alternating signal are determined and used to calculate the value corresponding to the statistical variance thereof. The deviation value is compared with a preselected value corresponding to the maximum variance expected of an alternating signal with a substantially uniform period. If the preselected value exceeds the computed value, an alternating signal with a uniform period is present while if the computed value exceeds the preselected value an alternating signal with a non-uniform period is present.
    Type: Grant
    Filed: August 5, 1977
    Date of Patent: October 17, 1978
    Assignee: RCA Corporation
    Inventor: Joseph Martin Cusack