Patents by Inventor Kenneth J. Hohhof

Kenneth J. Hohhof 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).

  • Programmable frequency detector
    Patent number: 3990007
    Abstract: A programmable frequency detector is provided for determining if the frequency of an input signal is above, below, or within a programmable tolerance of a programmable frequency. A counter circuit is provided that is enabled by a timing stage during a predetermined calculation period to count the input frequency; the counter output is then compared to a programmed frequency code input by a comparator stage. A latch circuit and the timing circuits then utilize the comparator output to determine if the input frequency was high, low, or within the pass tolerance band.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: November 2, 1976
    Assignee: GTE Automatic Electric Laboratories Incorporated
    Inventor: Kenneth J. Hohhof