Patents by Inventor Henry Fries

Henry Fries 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).

  • Adaptive precorrection of signal combiners using passive hybrid junction sample cancellation
    Patent number: 6356742
    Abstract: A circuit and method for adaptive precorrection of first signals applied to RF signal combiners of a broadcast signal transmitter provides a sample of the combined signal output of the RF combiner and a sample of a second signal to a hybrid so as to cancel from the combined signal the second signal, and to apply the resulting signal sample representing the first signal to an adaptive precorrector which precorrects the first signal before it is applied to the RF combiner. The circuit and method can be used with a two signal combiner, or with a multiple signal combiner.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: March 12, 2002
    Assignee: Thomcast Communications, Inc.
    Inventor: Henry Fries