Patents by Inventor Sean G. Brophy

Sean G. Brophy 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).

  • Noise mitigation and mode switching in communications terminals such as telephones
    Patent number: 5058153
    Abstract: A circuit to improve noise mitigation and mode switching in telephony, wherein the noise-floor level is continuously estimated by comparing its stored current value to the signal level value and substituting the latter for the former if it is less than the former.
    Type: Grant
    Filed: December 27, 1989
    Date of Patent: October 15, 1991
    Inventors: Edward C. Carew, Roland T. Lockhart, Sean G. Brophy