Patents by Inventor Earl M. Kartchner

Earl M. Kartchner 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).

  • System for the acquisition of code signals
    Patent number: 4638494
    Abstract: A system for the secure and rapid acquisition of a transmitted acquisition composite code composed from acquisition component codes. The acquisition composite code may, for example, be composed in accordance with a Boolean majority voting rule. Reference component codes that correlate respectively with the acquisition component codes are combined to provide a verification composite code that correlates with the acquisition composite code only when all of the reference component codes in the verification code are each in alignment with the corresponding acquisition component codes in the acquisition composite code. The verification code may, for example, be composed in accordance with a modulo-2 addition rule. Initially, the reference component codes are individually brought into alignment with the transmitted signal during the acquisition thereof.
    Type: Grant
    Filed: August 19, 1970
    Date of Patent: January 20, 1987
    Assignee: Sperry Corporation
    Inventors: Earl M. Kartchner, Robert Price, Gary R. Van Horn